WO2018122809A1 - 一种基于静态红外热像图处理的地下管廊渗漏检测方法 - Google Patents
一种基于静态红外热像图处理的地下管廊渗漏检测方法 Download PDFInfo
- Publication number
- WO2018122809A1 WO2018122809A1 PCT/IB2017/058539 IB2017058539W WO2018122809A1 WO 2018122809 A1 WO2018122809 A1 WO 2018122809A1 IB 2017058539 W IB2017058539 W IB 2017058539W WO 2018122809 A1 WO2018122809 A1 WO 2018122809A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crack
- temperature difference
- area
- image
- leakage
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/002—Investigating fluid-tightness of structures by using thermal means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/38—Investigating fluid-tightness of structures by using light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0033—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining damage, crack or wear
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0066—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by exciting or detecting vibration or acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/42—Road-making materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
- G01N2021/8845—Multiple wavelengths of illumination or detection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
Definitions
- the invention belongs to the technical field of image depth processing and leakage detection, and particularly relates to a method for detecting leakage of underground pipe corridor based on infrared thermal image processing.
- infrared thermal image By introducing infrared thermal image, the gray scale information and temperature information of the internal environment of the underground pipe gallery can be obtained.
- the gray scale information can realize the conventional target of pipeline line state identification inside the pipe gallery, and the temperature information can be used to detect the pipeline leakage and the later stage.
- Degree of development The degree of development mentioned in the invention characterizes the extent of damage to the pipeline by the leakage of the pipeline and the severity of the damage recently. It covers the traditional classification of crack severity, and the length, width and area of the crack. It may be related to factors that may increase the severity of crack damage, including these factors, and characterize the level of development of cracks from the beginning to the present.
- Support vector machine is a machine learning method based on statistical learning theory developed in the mid-1990s. It seeks to minimize the structural risk and improve the generalization ability of learning machine, and realize the minimum of empirical risk and confidence range. In order to achieve a good statistical rule in the case of a small sample size.
- support vector machines SVMs, which also support vector networks
- SVMs are supervised learning models related to related learning algorithms that can analyze data, identify patterns, and use for classification and regression analysis. Given a set of training samples, each marked as belonging to two categories, an SVM training algorithm builds a model, assigning new instances to one class or other classes, making it a non-probabilistic binary linear classification. Generally speaking, it is a two-class classification model.
- the basic model is defined as the linear classifier with the largest interval in the feature space. That is, the learning strategy of the support vector machine is to maximize the interval and finally transform into a convex quadratic. Solving the problem of planning.
- Classification function The temperature difference data is linearly classified according to the degree of crack development by the support vector machine, and the development degree is divided into 1. 2, 3 three levels, 3 is the most serious, then there will be a line between 1, 2 and 2, 3 as the dividing line, this line expression is the classification function.
- Crack zone A zone of a pipeline that includes not only the fracture zone itself, but also a range of pipelines around it, including the extent of the pipeline zone that meets image processing and crack identification requirements.
- Reference temperature difference data Temperature difference data obtained by bringing the measured ambient temperature into two classification functions of the crack development degree detection model.
- Measured temperature difference data Temperature difference data of the crack area and the pipeline surface area in the crack area obtained after image processing of the acquired infrared image of the crack area.
- Distortion The meaning of the data distortion degree in the present invention is a reasonable deviation of the unreasonable value distance after the data generates an unreasonable value.
- Development level A number in 1, 2 or 3 whose size reflects the degree of development of the fracture. The larger the number, the more serious the degree of crack development.
- Developmental index between 0 and 3, including a number of 0 and 3, the size of which reflects the degree of development of the fracture. The larger the number, the more serious the development of the fracture. The description is indicated by the letter m.
- Leakage severity index in the present invention means the average degree of severity of pipe cracks in three dimensions of length, width and area. The value ranges from [0-9. 9], retaining 1 decimal place, the size of which reflects the severity of the leak. The larger the number, the more serious the leak. Summary of the invention
- the internal space of the pipe gallery is photographed by a temperature-measuring infrared camera, and an infrared thermal image near the leaking point of the pipeline is obtained, and a relationship model between the leakage crack and the temperature difference between the leaking portion and the leaking portion of the pipeline is established, and then the machine is combined.
- the computer vision technology of learning establishes a discriminant model for pipeline leakage.
- the experimental principle is based on PCT / IB2016/058109.
- BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a technical route for identifying leaks in the interior of a pipe gallery using infrared thermography.
- the detection method of obtaining the crack width by the identification of the crack pixel width to determine the crack severity is unreliable, because the crack width of a few millimeters may have only a few pixels in the image, and is subjected to image processing such as noise reduction. The result is more unstable, so it is difficult to discriminate the crack only by the gray scale information of the crack obtained by the ordinary image.
- Infrared temperature measurement technology uses infrared optical system to make the infrared thermal image of the target to be measured on the infrared focal plane detector. After processing, the infrared image of the target to be measured is obtained, and then according to the gray value of the image and the calibration data, correlation The parameters analyze the temperature field distribution of the object.
- the temperature measurement technology based on full-field analysis can measure the temperature of a large area, and can simultaneously obtain the temperature of multiple objects and the temperature of multiple objects, which is of great significance for analyzing the state of the object. It has become a hot topic in recent years.
- the infrared thermal image obtained by the infrared camera can not only obtain the gray scale information of the inner space and crack of the pipe gallery, but also obtain their temperature information, as shown in Figure 2, which is the gray scale information and temperature of the inner space and crack of the pipe gallery. information.
- the temperature information can be used to detect the leakage of pipelines and provide reference for the later maintenance and repair.
- the discriminant model of pipeline leakage is established mainly through experiments and computer vision technology combined with machine learning.
- the space of the underground pipe gallery is dark and humid.
- the traditional method of detecting the leakage of the internal pipe will be subject to various restrictions due to the dim light and low temperature, resulting in large errors or even being undetectable. Therefore, the present invention clearly recognizes the obvious difference between the leakage area and the corridor environment through the infrared thermal image, can effectively identify the leakage point, and can use image processing technology to display parameters such as the size of the leakage damage.
- Leakage in underground integrated pipe gallery is mainly divided into leakage caused by small crack damage, leakage caused by local damage and leakage caused by loose pipe joint.
- the characteristics of the leak point are different, so the image taken by the infrared camera will show different characteristics. Therefore, the present invention needs to set a scientific infrared data information screening standard to distinguish different kinds of leakage conditions, thereby ensuring the applicability of the detection results, and providing a possibility for targeted maintenance according to a specific classification in the future.
- the invention provides an accurate and efficient positioning technology, and realizes the positioning of the leakage point by screening and matching the interest domain graphic and the template graphic.
- the object of the present invention is to reflect the degree of crack development by the temperature difference between the surface of the pipe and the crack under certain conditions, and their corresponding relationship is the detection model. Therefore, in order to solve the above problems, the technical solutions adopted by the present invention include:
- the basis of the leakage analysis model based on infrared thermal imaging is the temperature field information measurement function, which relies on the infrared image temperature field recognition algorithm to realize the analysis of the infrared image collected by the acquisition device or the infrared image data stored on the computer.
- the corresponding temperature value is calculated according to a certain mathematical model, and the temperature is measured by the set temperature measurement method.
- the temperature measurement method is a kind of temperature measurement and regional temperature measurement.
- the point temperature measurement is to measure the temperature of a single pixel, and the area temperature measurement is to measure the average value of a region. Therefore, the global, local area and point measurement of the target scene temperature can be achieved based on the image data.
- the temperature difference will occur in the vicinity of the leakage point, and the infrared camera can visually detect the temperature difference of the surface above the leaking pipe, and according to the above The temperature measurement method realizes the perception of temperature difference.
- the temperature of the surface of the pipeline and the interior will be different. Therefore, the dielectric material inside the pipeline will exchange heat with the surface of the pipeline and the ambient air through cracks or other damaged areas, while the surface and cracks of the pipeline There will also be a temperature difference.
- the greater the length and width of the pipe crack the more intense the air heat exchange between the material in the pipe and the surface of the pipe. The temperature difference will be bigger.
- the greater the length and width of the crack the more likely it is to cause future water damage, and the leakage is also reflected by the severity index. Therefore, the more severe the crack, the greater the temperature difference between the surface of the pipe and the crack, and we can use the thermal imager to detect the temperature difference and then detect the severity of the leak.
- the severity of leakage can be measured in a variety of ways.
- the present invention is described in terms of length, width, and area, respectively, and defines G as the index of severity of leakage.
- G 1 [ ⁇ x l00%x l0] ( 1 ) where ⁇ is the severity index in the crack length dimension; Z is the length of the crack, the unit is the number of pixels; the outer diameter of the pipe, the unit is mm; The resolution of each pixel in length, in mm/pixel.
- G 2 [2 ⁇ x l00%X l0] (2) where ⁇ is the severity index in the crack width dimension; S is the crack area, the unit is the number of pixels; Z is the length of the crack, and the unit is the number of pixels; r 2 is the resolution of the width of each pixel of the camera in mm/pixel.
- ⁇ is the severity index in the dimension of the crack area
- S is the area of the crack
- the unit is the number of pixels
- ⁇ is the length of the crack
- the unit is the number of pixels
- ⁇ , r 2 is the same as the outer diameter of the pipe, the unit is mm .
- G Gl +Gz +G3 (4)
- G is the severity index of the crack, and the result retains 1 decimal place.
- the relationship between ambient temperature and temperature difference is shown in Figure 4.
- the severity of the leakage is mainly measured by the damage it has caused to the pipeline, that is, the potential damage in the near future.
- the severity of the leak is not only related to the width, length and area of the crack, but also to the depth of the crack.
- the corrosion of the material around the crack is also one of the factors affecting the severity of the crack. Therefore, the severity of the leak needs to be considered comprehensively.
- image analysis can detect the length, width and area of the crack, and the depth of the crack can be detected by laser radar. In order to estimate the corrosion of the material around the crack, how to accurately and simply reflect the development degree of the crack is an urgent problem to be solved in the project. Image acquisition
- the uncooled focal plane temperature measuring type infrared thermal imager uses an infrared detector and an optical imaging objective lens to receive the infrared radiation energy distribution pattern of the measured object and reflect it on the photosensitive element of the infrared detector, thereby obtaining an infrared thermal image, which is obtained.
- the image corresponds to the heat distribution field on the surface of the object.
- an infrared camera converts invisible infrared energy emitted by an object into a visible thermal image.
- the different colors above the thermal image represent the different temperatures of the object being measured.
- Uncooled focal plane temperature measuring infrared camera Uncooled focal plane temperature measuring infrared camera.
- the height of the distance from the surface of the pipe is 0. 5m, 0. 6m, 0. 7m, 0. 8m, 0. 9m, 1. 0m, it is required to capture the requirements for subsequent image processing for crack recognition.
- the resolution of the image taken with the camera is at least 384 X 288; at 30 °C, the thermal sensitivity is at least 0. 06 °C; the frame rate is at least 50 Hz, used to collect the experimental water pipe at ambient temperature.
- Infrared image The main imaging parameters of the DM60-S on-line thermal imaging camera, the infrared image acquired can meet the resolution requirements, and can be used as a reference for obtaining infrared image equipment.
- the ordinary image acquisition device and the infrared camera constitute a binocular camera, and the angle of view of the two pictures is required to be consistent.
- the ordinary image and the infrared image collected at the same time have the highest repeatability, and the data acquisition end is designed to be full. Area image acquisition.
- the thermal imaging camera can be used with a fixed camera. Due to the detection of fixed equipment, the data is irreversible, continuous and trending due to the characteristics of leakage.
- the irreversible pointer refers to the picture data of the suspicious leakage point collected by the infrared camera. If there is a leakage crack at the previous moment, the next moment should also exist.
- the continuity refers to the fact that the leakage velocity of the leakage crack is relatively slow, usually 1 hour is the detection period, and the parameters of the leakage crack at the latter moment should only be slightly changed based on the parameters of the leakage crack at the previous moment.
- the color image of the infrared image and the dimensional parameter curve of the possible leaking crack should be smooth with minimal variation.
- the trend refers to the fact that the leakage crack is irreversible, so the crack at the latter moment must be greater than or equal to the severity of the previous moment.
- the color of the infrared image will not change or deepen, and the size parameter of the leaking crack may change or become larger.
- a temperature measuring fiber sensor is disposed in the pipe gallery, and the detection result is transmitted to the distributed fiber temperature sensing host through the temperature measuring fiber sensor, and the sensing host analyzes and processes the collected signal in real time to realize the monitoring work of the heating pipe.
- the distributed or robotic inspection type infrared temperature sensing system monitors the temperature field in the pipe corridor environment in real time, and assists the sensing devices such as cameras and sensors configured in various areas of the pipe gallery through the transmission link. The information is processed by the sub-control center and collected in the monitoring center.
- the temperature abnormality detection data of the optical fiber sensor is used as a control for the detection of the infrared temperature sensing system, and the trade-offs and corrections of the two results are as follows: (1) When the results of the two are the same, the test is considered correct;
- the infrared thermal imaging image acquisition system is composed of DM60-S model infrared thermal imager and JVS-C300Q model data acquisition card.
- the infrared thermal imager is used to capture the infrared image of the monitoring area, and the acquisition card assists in collecting thermal imaging image storage. It is easy to call and process at any time on the computer hard disk. At the same time, it assists in patrolling the robot, and installs 360 camera equipment.
- the machine is equipped with WIFI equipment to realize real-time transmission of data information, which can realize regular fast and accurate leak inspection at any time.
- the collected leaky crack infrared image is a color image containing brightness and color information. It is necessary to grayscale the crack image, that is, convert the originally collected color image into a grayscale image, and remove the color information in the image.
- the color of each pixel in a color image is determined by three components: 1?, G, and B.
- a pixel can have a variation range of more than 16 million (255*255*255) colors.
- the grayscale image is a special color image with the same components of R, G, and B. The range of one pixel varies from 255. Therefore, in digital image processing, images of various formats are generally converted into gray. Degree image to reduce the amount of subsequent image calculations.
- the description of the grayscale image like the color image, still reflects the distribution and characteristics of the overall and local chromaticity and brightness levels of the entire image.
- the grayscale processing of an image can be implemented in two ways.
- the first method makes the average of the three components of R, G, and B for each pixel, and then assigns this average to the three components of the pixel.
- the second method is based on the color space of the YUV.
- the physical meaning of the component of Y is the brightness of the point.
- the value reflects the brightness level.
- the brightness can be established with ⁇ 1, G, B.
- the correspondence of the three color components: Y 0. 3R+0. 59G+0. 11B, the gray value of the image is expressed by this brightness value.
- the brightness of the leaky crack image collected by the traditional image-based method is not uniform, and the gray value of the crack part and the background part of the image are greatly different. This large difference will bring certain processing to the subsequent processing. Difficulties, such as the selection of thresholds in image segmentation.
- the present invention introduces an infrared image by using an ordinary image for crack recognition, and the image thereof is only caused by the difference in temperature. In the experimental environment described above, the image is collected without substantially having a temperature difference. Therefore, the present invention does not. Need to consider the impact of gray unevenness. Image noise reduction is suitable for ordinary images and infrared images. In reality, digital images are often subjected to digitization and transmission. Effects such as noise interference between the device and the external environment are called noisy images or noisy images.
- noise is an important cause of image interference.
- An image may have a variety of noises in practical applications, which may be generated in transmission or may be generated in processing such as quantization. According to the relationship between noise and signal, it can be divided into three forms: (f (x, y) represents a given original image, g (x, y) represents an image signal, and ⁇ ( ⁇ , y) represents noise.
- f (x, y) g ( X , y) + n ( X , y), channel noise and light guide tube
- f (x, y) g (x, y) +n (x, y) g (x, y), flying point
- Quantization noise which is independent of the input image signal, is the quantization error in the quantization process, and is reflected to the receiver.
- Noise can generally be defined as unpredictable in theory, and random errors can only be recognized by probabilistic methods. Therefore, it is more appropriate to regard the noise in the image as a multi-dimensional random process.
- the random process can be used to describe the noise, that is, the probability distribution function and the probability density distribution function are used to represent, and the more mature noise reduction algorithm can be used.
- the methods of image noise reduction mainly include the following types:
- the mean value filter using the neighborhood averaging method is very suitable for removing particle noise in an image obtained by scanning.
- the field averaging method strongly suppresses the noise, and at the same time causes the ambiguity due to the averaging, and the degree of ambiguity is proportional to the radius of the neighborhood.
- the smoothness achieved by the geometric mean filter can be compared to an arithmetic mean filter, but less image detail is lost during the filtering process.
- Harmonic averaging filters work better for "salt” noise, but not for "pepper” noise. It is good at dealing with other noises like Gaussian noise.
- the inverse harmonic mean filter is more suitable for processing impulse noise, but it has the disadvantage that it must be known whether the noise is dark noise or bright noise, in order to select the appropriate filter order symbol, if the symbol of the order is wrong. May cause catastrophic consequences.
- Combining on and off can be used to filter out noise.
- the noisy image is turned on.
- the structure element matrix can be selected to be larger than the noise, so the result of the turn-on is to remove the noise on the background.
- the image obtained in the previous step is closed to remove the noise on the image.
- the image type to which this method is applicable is that the size of the object in the image is relatively large, and there is no fine detail, and the effect of denoising the image of this type is better.
- Edge detection is a fundamental problem in image processing and computer vision. The purpose of edge detection is to identify points in the digital image where the brightness changes significantly. Significant changes in image properties often reflect important events and changes in attributes. These include (i) discontinuities in depth, (i i ) surface discontinuities, (i i i) material property changes, and (iv) scene illumination changes. Edge detection is a research area in image processing and computer vision, especially feature extraction.
- the search-based edge detection method first calculates the edge intensity, usually expressed by a first derivative, such as a gradient mode, and then uses the calculation to estimate the local direction of the edge, usually using the direction of the gradient, and using this direction to find the maximum value of the local gradient mode.
- the zero-crossing based method finds the zero crossing of the second derivative derived from the image to locate the edge. Zero crossings are usually used for Laplacian or nonlinear differential equations. Filtering is usually necessary as a pre-processing of edge detection, usually using Gaussian filtering.
- the published edge detection method applies a measure of the calculated boundary strength, which is fundamentally different from smoothing filtering.
- edge detection methods use different kinds of filters to estimate the gradients in the X- and y_ directions.
- Commonly used edge detection templates include Laplacian operator, Roberts operator, Sobel operator, log (Laplacian- Gauss) operator, Kirsch operator and Prewitt operator.
- the infrared thermogram is used to extract the temperature difference point in combination with the threshold segmentation. The temperature difference between the leak point and the surrounding area is the difference between the RGB values reflected in the gray scale. Therefore, when the appropriate threshold is set, the temperature difference point can be extracted.
- the crack target to be identified in the leak crack image is compared with the background, and the amount of information is relatively small, and in the process of image acquisition and transmission, the resolution and contrast of the image are reduced due to interference of many factors. Therefore, after filtering and denoising the image, the graphics are further enhanced, so that the crack target we are interested in is more prominent, providing a basis for the subsequent segmentation recognition algorithm.
- Image threshold segmentation is a widely used segmentation technique. Using the difference between the target region and the background in the image, the image is treated as two types of regions (target region and background region) with different gray levels. The combination of a reasonable threshold is selected to determine whether each pixel in the image should belong to the target area or the background area, thereby generating a corresponding binary image. The purpose of this step of the invention is to find the cracked area and the non-cracked area.
- the characteristics of the threshold segmentation method are: For the case where the target has a strong contrast with the background grayscale, it is important that the grayscale of the background or object is relatively simple, and the boundary of the closed and connected regions can always be obtained.
- grayscale or color of cracks and pipes have obvious differences, and it is suitable to use image threshold segmentation algorithm.
- image threshold segmentation algorithm The advantages of threshold segmentation are simple calculation, high computational efficiency, and fast speed. In applications where operational efficiency is important (such as for hardware implementation).
- the process of image threshold segmentation algorithm can be represented by Figure 5.
- a model is built and the original signal is characterized by the features of the model.
- the model can be a one-dimensional histogram or a two-dimensional histogram. Etc., whether the model is reasonable or not is directly related to the results of subsequent processing. The more information is considered, the larger the calculation amount.
- the image segmentation method based on two-dimensional histogram is more computational than the one-dimensional histogram based segmentation. The method is much bigger.
- the second step of threshold segmentation is to determine the criterion for obtaining the threshold. In the case of a certain model, the criterion for obtaining the threshold determines the final segmentation threshold.
- the third step of threshold segmentation is to obtain the segmentation threshold.
- the exhaustive method can achieve good results; if the model established in the first step is more complicated, use poor
- the method is time-consuming and not conducive to practical application. At this time, you can consider using the group intelligence algorithm to obtain the threshold, such as the particle swarm algorithm to find the threshold.
- the image threshold segmentation method can be divided into single threshold segmentation method and multi-threshold segmentation method. If an image has only two types of target and background, a threshold can separate the target from the background. This method is called single. Threshold segmentation, if the image needs to be divided into multiple classes, that is, there are multiple different regions in the image, multiple thresholds are needed to separate them. This is called multi-threshold segmentation. Let the original image be /( ⁇ , 3, the result of the segmentation is ⁇ , , ⁇ is the segmentation threshold obtained, and the single threshold segmentation method can be defined as
- the original image is /0,
- the segmented result is ( , 3:)
- T k is a series of segmentation thresholds, and the multi-threshold segmentation method can be defined as
- Table 1 The accuracy of extracting temperature difference points by image threshold segmentation method Actual area of crack area The area extracted by segmentation algorithm
- the edge extraction method is used to accurately extract the cracks and classify and locate them.
- the traditional crack analysis technology based on image analysis only pays attention to the crack itself. It is necessary to detect the presence or absence of cracks, location and geometry, and the transition between the crack and the pipeline is basically not considered.
- the invention mainly needs to obtain the temperature difference between the pipeline area and the crack area. It is necessary to pay attention to the two areas of the crack and the pipeline. Therefore, the influence of the transition area can be considered. After the crack and the pipeline area are obtained by image segmentation, the transition of the two regions is required. The area is cut, because the pipe temperature to the crack temperature is gradual, the temperature of the transition zone between the crack and the pipe is between the crack center temperature and the pipe temperature, and the transition zone is the interference zone for the pipe temperature, as shown in Figure 6. The following measures can be taken to eliminate the interference zone.
- the transition interference zone is small relative to the area of the pipe area. Therefore, the width of the pipe area can be reduced by a fixed width.
- the width can be set to w width (0. 5mm ⁇ w ⁇ 2. 5mm), in practice, it is also possible to adopt a method based on the maximum width ratio of the crack region, that is, after detecting the crack region, the crack region is doubled up and down, and the remaining region is defined as a pipeline region without interference zone. Assuming that the surface area of the pipe segmented by the image is 3 ⁇ 4, and finally the determined width is taken, then the following formula (7) is used. This method can better eliminate the influence of the transition interference zone.
- the range of the transition interference zone is determined, how to delete it specifically can refer to the following:
- For the pipeline area it is equivalent to moving the image segmentation boundary along the segment boundary to the pipe zone direction to obtain a new pipe zone boundary.
- For the crack zone The image segmentation boundary is moved along the segmentation boundary radially toward the crack region to obtain a new crack region boundary.
- the edge is the main part of the local intensity change of the image, mainly between the target and the background. By detecting the edges, the image information to be processed is greatly reduced, and the shape information of the objects in the image is retained.
- Edge detection is a matrix convolution operation on an image using a template. The convolution operation is to multiply each pixel in the image region used by each element of the template (weight matrix), and the sum of all products is the new center pixel value for that region.
- the sobel operator consisting of gradient and difference principles. It is a weighted average operator that highlights the edges by weighting them to the center point.
- the image segmentation algorithm with adjustable threshold is used to distinguish the crack from the background, and the crack region and impurity with lower gray value are converted into black, and the background with higher gray value is converted to white.
- the area threshold and the area-circumference fractal law are introduced to remove non-cracked areas such as impurities, and only the crack area is maximized.
- Open and close operations first need to understand corrosion and expansion, corrosion: is a process to eliminate the boundary point and shrink the boundary to the inside. Can be used to eliminate small and meaningless objects; Expansion: is the process of merging all background points in contact with an object into the object, expanding the boundary to the outside. Can be used to fill holes in objects.
- Open operation The process of first eroding and then expanding is calculated. It is used to eliminate small objects, separate objects at slender points, and smooth the boundaries of larger objects without significantly changing their area. The open operation is usually used when it is necessary to remove small particle noise and to break the adhesion between the targets. Its main function is similar to corrosion, and it has the advantage of keeping the original size of the target unchanged compared with the corrosion operation. Closed operation: The process of first eroding and then eroding is called a closed operation. It is used to fill small voids in objects, connect adjacent objects, and smooth their boundaries without significantly changing their area.
- Morphological transformation of binary images in mathematical morphology is a process for collections.
- the essence of the morphological operator is to express the interaction between the set of objects or shapes and the structural elements.
- the shape of the structural elements determines the shape information of the signals extracted by this operation.
- Morphological image processing is to move a structural element in the image, then intersect the structural element with the binary image below, and then perform the set operation.
- the calculation method of fractal dimension is adopted. Not all irregular graphics have fractal features, and only graphics that satisfy self-similarity within a certain scale range satisfy the fractal feature.
- the key is to calculate whether the fractal dimension values corresponding to the surface cracks of the structure meet the requirements of non-European space.
- the fractal dimension can quantitatively and qualitatively reflect the degree of damage on the surface of the pipeline.
- the irregular figure has a relationship between its circumference and the area: ⁇ ⁇ ⁇ 2 , where the circumference is expressed, ⁇ is the area, and the fractal dimension is obtained, and the logarithm of the two sides is obtained:
- ⁇ ogP 0.5D ⁇ ogA + C (9) where: C is a constant.
- the linear fitting accuracy is calculated by the following formula. When the value of ? 2 is close to 0, it means that the fitting accuracy is very poor; when the value of ? 2 is close to 1, it means that the fitting precision is very high.
- the clear, complete and undisturbed pipe crack image is converted into a binary image by adaptive threshold segmentation, and the crack is extracted as a black region; then the boundary tracking method is used to calculate the crack area and perimeter of the formula, ie The number of pixels in the Unicom area is the area of the crack. The number of pixels on the statistical boundary is the perimeter of the crack. Finally, the area and perimeter values are substituted into the former formula, and the least squares method is used to obtain the pair. The line equation of the area-circumference relationship in numerical coordinates can be used to find the fractal dimension of the crack. Calculate by selecting 10 clear, complete cracks.
- the crack region and the pipeline surface region can be obtained by using the existing mature algorithm, and then the RGB average value of the image in each region is obtained, and finally the average RGB value is matched with the colorbar, from left to right. Perform, step by two pixel width to ensure the accuracy of the temperature value, calculate the temperature value according to the matched position and color range.
- Image area feature analysis is the ability of a computer to recognize or recognize an image, that is, image recognition.
- Feature selection is a key issue in image recognition. The basic task of feature selection and extraction is how to find the most effective features from among the many features.
- a set of original features is generated by calculation, which is called feature formation.
- the number of original features is large, or the original sample is in a high-dimensional space.
- the feature description in high-dimensional space can be described by the feature of low-dimensional space through mapping or transformation.
- This process is called feature extraction.
- Some of the most effective features are selected from a set of features to achieve the goal of reducing the dimensionality of the feature space. This process is called feature selection.
- Concavity and convexity is one of the basic features of a region.
- the concavity and convexity of a region can be determined by a method: a line connecting any two pixels in a region passes through a pixel outside the region, and this region is concave. Instead, connect a line segment of any two pixels in the image, if you don't pass a pixel other than this graphic, Then this figure is called convex.
- the convex closure of this graphic After removing the portion of the original graphic from the convex closure, the position and shape of the resulting graphic will be an important clue for shape feature analysis.
- the type of leakage of a known leak point Based on the regional characteristics of the leak point, such as roundness, density and other parameters, determine the type of leakage of a known leak point. When a certain characteristic of the leakage area satisfies the following conditions, it can be considered that the leakage area at this point is such a type of leakage.
- This section mainly considers the perimeter/area of a leaking area and the area of the circumscribed rectangle of the leaking area & / the area S 2 of the area.
- Table 2 shows the determined temperatures for leaks and undamaged points at different ambient temperatures. Table 2 Determining the temperature of the leaking point and the undamaged point at different ambient temperatures
- the leakage temperature change values at each temperature are averaged to obtain the average temperature change curve of the leak, which is the non-destructive area.
- the angle bisector of the two curves is taken as the boundary of the temperature change trend of the leak and the temperature of the undamaged portion, as indicated by the thick black dotted line in Fig. 10.
- the data is linearly classified using a support vector machine.
- the ambient temperature is plotted on the abscissa, and the temperature difference between the crack and the surface of the pipe is plotted on the ordinate. There are three levels of 1, 2, and 3. The greater the number, the more serious the development is.
- the classification function graph can be obtained.
- test results are judged according to the following:
- the development degree of ⁇ ⁇ ⁇ 2 is 1; ⁇ 12 ⁇ ⁇ ⁇ ⁇ 23 , the development degree is 2, ⁇ ⁇ ⁇ 23
- the degree of development is 3.
- the temperature difference between the surface of the pipe and the crack is mainly related to the temperature, and the temperature difference between the crack and the surface of the pipe and the degree of development of the crack are related, so the crack and the pipe can be detected by the infrared camera.
- the temperature difference of the surface and then use the above classification function and 2 , to detect the degree of crack development.
- the detection environment meets the requirements, that is, the dark and humid underground pipe gallery space and the environmental temperature in the pipe gallery space are uniformly increased by more than 4 degrees Celsius. Then using the thermal imaging data acquisition, recording and when the ambient air temperature at each image capture, the post-treatment to give the pipe surface temperature cracks, degree of development of classification threshold values calculated from the temperature and eight 72 eight.
- the pipe structure is a belt structure for transporting liquid.
- the environmental factors and loads are the main causes of the structural damage of the pipeline.
- the physical characteristics of the pipeline area are relatively consistent. Therefore, in the infrared image, the temperature values of the pipeline area are basically the same. It is convenient to handle, and does not need to be separately considered, that is, after obtaining the pipeline area in the image segmentation, it returns to the infrared image to calculate the RGB average value of the whole region.
- the crack area is usually of a slender shape, such as a two-meter-long crack, which may be only a few millimeters wide.
- the two-meter-long crack has a half-meter-long area, and the development is more serious. According to the average RGB value, it may need to be repaired, but for another three. Decimeter-long cracks, which also have a half-meter-long area, are more developed. The development degree index obtained from the average RGB value is lower than the previous one, and even shows no repair. It is obviously unscientific.
- the effective crack region is divided into the P segments by the straight line along the y-axis direction, and each segment length is arbitrary; for the longitudinal crack, the effective crack region is divided into the p segments by the straight line along the X-axis direction of the image, each length Arbitrarily; for other types of cracks, not segmented or divided into segments according to the geometric center of the crack, each segment corresponds to the central angle.
- the crack region divided by the image can be divided into p(p ⁇ 2) segments for consideration.
- Each segment can be processed according to the technical route described above, that is, image graying and noise reduction are first performed.
- image segmentation is performed, and the crack region is obtained and then divided into w segments for subsequent processing, including performing average RGB value calculation for each segment, and then matching the average RGB value with the color value in the legend to determine the segment.
- the temperature value finally, the length of the p-segment crack region/the temperature difference ⁇ between the crack region and the pipe temperature is obtained, that is, the following array is obtained, as shown in the formula (17): ⁇ ⁇ 2 ⁇ ⁇ ⁇ ) ( 17)
- ⁇ ( ⁇ , ⁇ 2 ... ⁇ ⁇ ) ( 18) where ⁇ is the temperature difference between the segment/section and the pipe after the fracture zone is divided into sections.
- a weighted average calculation can be performed according to the following formula (19) to obtain a final measured temperature difference ⁇ of the effective pipeline region and the effective crack region.
- index of the development degree of each segment of the fracture region obtained by the array is as follows (20):
- the invention divides the degree of crack development into three levels of 1, 2 and 3 through machine learning.
- SVM supports vector machine.
- the linear inseparable sample in low-dimensional space is mapped to the kernel function.
- a linearly separable sample space in a high-dimensional space is calculated by a kernel function to obtain a linear classifier.
- kernel functions such as linear kernel functions, polynomial kernel functions, radial basis kernel functions, Sigmoid kernel functions, and composite kernel functions.
- the linear kernel function is first used to classify the 1 and 2 grades, and the classification function / 12 is obtained , and then the 2, 3 grades are classified according to the data to obtain the classification function / 23 , and there is a certain error in the machine learning classification.
- the classification data some of the cracks belonging to the lighter development degree are assigned to the category of more serious development degree, and the cracks with the heavier development degree are assigned to the lighter category.
- the average development index of the weights there will be a small number of fracture development index, because there is a certain error in the classification of these, although the development index of the decimals does not necessarily make the fracture development index more Precise, but can reflect the relative size, 2.
- the development index of the 6 is divided into cracks with a developmental index of 3, and 2. 4 is divided into cracks with a developmental index of 2, which is the previous classification.
- the method but the 2.6 developmental degree index and the 2.4 developmental degree index calculated by the weighting are actually not much different, which has a considerable influence on the manager's decision-making. Therefore, in the calculation of the fracture development degree index, the invention can take a decimal point to indicate the calculated relative relationship.
- the developmental index of 2.4 is not necessarily more serious than the developmental index of 2.3, because as mentioned above, there is an error in the classification itself. 2 This integer part may already be inaccurate. .
- the invention determines an error term according to the variance of the weighted average calculation method in the calculation process, that is, the development degree index can take one decimal place and is expressed as: m ⁇ form.
- ( ° C ) is the ambient temperature
- ( ° C ) is the temperature difference between the surface of the pipe and the crack
- ⁇ 23 is a linear classification function coefficient
- the value range is 0. 02-0. 03
- b 23 linear classification function constant term The value ranges from 1.80-2. 55.
- test results are judged according to the following
- the result calculated by the formula can take one decimal place.
- m' is the result of multiple tests on the same crack, and then the standard deviation is obtained from the above formula.
- the development index of the crack can be written to one decimal place, and the error is defined by a fixed error term.
- the fixed error term is obtained experimentally, and the new developmental degree index is written as follows (26):
- the detection system of the pipeline crack development degree based on infrared thermography is used to construct the detection system.
- the actual detection system needs to use infrared double
- the eye camera captures the image of the pipe.
- the binocular camera includes a normal camera and an infrared camera to simultaneously capture the image of the pipe and process it for identification of the presence, size, size and development of the crack. Data fusion can improve the robustness of the detection method proposed by the invention.
- the crack detection system is modular in design and can be combined with other pipeline disease detection modules.
- the crack detection module includes a camera fixing device, a binocular camera, a data transmission line, a vehicle terminal, a GPS receiving device, and inertial navigation.
- the camera fixture can be customized with a fixed iron frame to ensure that the binocular camera can be reliably fixed on the engineering vehicle.
- the patrol car head can be used to control the binocular camera angle while fixing the camera.
- the pan/tilt has at least two degrees of freedom. , that is, it can be rotated in the horizontal direction and the vertical direction respectively, and more degrees of freedom will bring higher operation of the gimbal.
- the minimum configuration of the infrared camera is: 320 X 240 resolution, with replaceable lens, maintenance-free uncooled microbolometer, microscopy and close-up measurement, data transfer speeds up to 60 Hz.
- the normal image camera supports real-time output of 1080P HD images.
- the data transmission line includes at least two, which respectively support high-frequency transmission of high-definition ordinary images and infrared images, and supports at least 100 Hz. 1080p video transmission.
- the inspection vehicle terminal includes two schemes: one is front-end processing, the embedded PC is used for real-time video stream processing, and the processed data is transmitted through the 3g ⁇ 4g network.
- the embedded PC can be compatible with the data of the ordinary image and the infrared image.
- the processor supports real-time processing of video stream; the other is back-end processing, the inspection vehicle terminal as the front end of data acquisition, only responsible for data acquisition and storage, lower configuration and development requirements, requires an interface for collection
- the three-party device is connected for data processing.
- the module uses the video image splicing technology to restore the longitudinal image of the pipeline during the entire acquisition process, and then separately cuts along the length direction to identify the accuracy and stability of the pipeline crack detection. This system idea requires high image processing algorithms and relatively few devices.
- the GPS accepts the device and the inertial navigation, which together locate the acquisition device to ensure accuracy and real-time. The accuracy of positioning needs to be within 10m.
- Another type of crack detection module includes a camera fixing device, a binocular camera, a data transmission line, a patrol vehicle terminal, a GPS receiving device, an inertial navigation, a photoelectric encoder, and a synchronization controller (refer to CN104749187).
- the photoelectric encoder is mounted on the wheel central axis of the inspection vehicle moving platform for measuring the running speed and distance of the inspection vehicle moving platform;
- the GPS receiver is installed on the inspection vehicle mobile platform for the inspection The high-precision positioning and timing of the in-vehicle mobile platform;
- the inertial navigation is installed on the platform of the inspection vehicle, and is used for measuring the in-vehicle mobile platform when the GPS receiver does not receive the GPS signal in the tunnel.
- Position and attitude data realizing high-precision position estimation inside the tunnel;
- Synchronous controller installed on the inspection vehicle mobile platform, used to synchronize the image acquisition time of ordinary cameras and infrared cameras to ensure uniform time and space between the two Benchmark. This method accurately measures the vehicle speed through the photoelectric encoder.
- the synchronous controller automatically controls the binocular image acquisition time according to the vehicle speed and the field of view of the binocular camera, ensuring that the pipeline images of two adjacent effective clips have good continuity.
- the collected pipes are completely covered and do not overlap each other.
- the front-end processing or storage function is executed. This system has higher requirements on the device and lower image processing algorithms.
- BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a technical road map for identifying the leakage of the internal space of the pipe gallery by infrared thermal image.
- Figure 2 shows the grayscale information and temperature information of the interior space and cracks of the pipe gallery.
- Figure 3 is a graph of illuminance versus temperature difference.
- Figure 4 is a graph showing the relationship between the increase in ambient temperature and the temperature difference.
- Figure 5 shows the image threshold segmentation model.
- Figure 6 shows the crack area on the surface of the pipe, the pipe area and the transition interference zone.
- Figure 7 is a flow chart of the crack extraction algorithm combining the skeleton and fractal features.
- Figure 8 shows the fractal dimension of crack and impurity regions.
- Figure 9 shows the threshold for looseness leakage at the interface.
- Figure 10 shows the temperature change at the leak and undamaged after the ambient temperature rise.
- Figure 11 is a linear classification diagram of the support vector machine.
- Figure 12 is a schematic diagram showing different temperature differences obtained for different crack sections. detailed description (1) Environmental determination
- the inspection model needs to be used under certain environmental conditions to ensure accuracy. First, it is necessary to ensure that the environmental conditions during data collection are satisfied: The dark and humid underground pipe gallery space and the ambient temperature in the pipe corridor space are uniformly increased by 4 degrees Celsius or more. It is necessary to ensure that the environmental conditions are stable when the data is collected, that is, the ambient temperature inside the pipe gallery is uniform, and after a certain temperature is raised, no drastic changes will occur.
- the inner space of the pipe gallery was photographed by a temperature-measuring infrared camera, and the infrared thermal image of the crack region was analyzed.
- the thermal imager is photographed at a horizontal distance of 1 m from the pipeline, and the machine position is kept at a constant speed from the crack area.
- the infrared camera uses an infrared detector and an optical imaging objective to receive the infrared radiation energy distribution pattern of the target to be reflected on the photosensitive element of the infrared detector, thereby obtaining an infrared thermal image, the thermal image and the surface heat of the object.
- the distribution field corresponds.
- an infrared camera converts invisible infrared energy emitted by an object into a visible thermal image.
- the different colors above the thermal image represent the different temperatures of the object being measured.
- Invention of the current mainstream infrared imaging device Uncooled focal plane micro-thermal infrared camera.
- the ambient temperature is directly measured by a thermometer, and the degree of crack development is manually measured according to the crack width.
- the crack is divided into three levels of light, medium and heavy, and then consider the factors such as the humidity and depth of the crack.
- the developmental degree index is scored, and the detection model is established based on the actual data.
- the image pre-processing is performed to perform grayscale processing on the infrared image; the image is subjected to wavelet denoising and median filtering processing of different rectangles, while filtering noise, try not to blur the edge; using image gray enhancement algorithm, enhancing The contrast between the crack and the background area facilitates the extraction of the crack; the image segmentation algorithm with an adjustable threshold is used to segment the image, the crack region with lower gray value and the impurity are converted to black, and the background with higher gray value is converted to white, for the impurity
- the non-cracked area can be removed by the area threshold and the area-circumference fractal rule, leaving only the crack area.
- the RGB values are matched, and the temperature represented by the most consistent position is the temperature of the region.
- the crack region and the pipe surface region are respectively matched with the legend to obtain respective temperatures, thereby obtaining the temperature difference between the crack and the pipe surface.
- the image segmentation technology in image processing can identify the crack area directly after the temperature identification process of the crack area and the pipe surface area, and can also analyze the transition interference zone directly between the crack and the pipe surface according to the above description. .
- the final temperature difference data can be obtained directly to calculate the temperature difference between the entire crack area and the surface area of the pipeline. It is also possible to divide the crack area into sections, and the average distribution method can be adopted, and then the section with higher development index is given.
- the high weight according to the method of giving different weights, calculates the temperature difference between the final crack area and the surface area of the pipeline. Considering the different conditions of different pipe corridor environments, it is possible to try to establish a model of the relationship between the temperature difference of the cracks in the pipe corridor environment and the ambient temperature conditions.
- the current data is corrected and discarded according to historical data; the temperature difference obtained by image analysis, and the temperature information collected by other instruments and the temperature difference data collected by the optical fiber temperature measurement are used to correct the relationship model.
- the temperature difference obtained by image analysis, and the acquired image are collected by other instruments.
- the temperature information is established to be related to the degree of crack development, that is, the specific values of the correlation coefficients of the linear classification functions / 12 and / 23 are mainly determined.
- the above detection model can be used to detect the actual degree of crack development, and it is necessary to collect the infrared image of the cracked road surface and the current ambient temperature.
- the index of crack development can be roughly divided into three levels of 1, 2, and 3. Only one of the three numbers can be taken. The larger the value, the more serious the development.
- the calculation can also use the developmental index with a decimal number as mentioned above, the value range is 0-3, and the specific development degree index can be expressed in the form of ⁇ .
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Acoustics & Sound (AREA)
- Image Processing (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Radiation Pyrometers (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1905909.6A GB2569751B (en) | 2016-12-30 | 2017-12-30 | A method for leakage detection of underground corridor based on static infrared thermal image processing |
CN201780053170.8A CN110268190B (zh) | 2016-12-30 | 2017-12-30 | 一种基于静态红外热像图处理的地下管廊渗漏检测方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IBPCT/IB2016/058109 | 2016-12-30 | ||
PCT/IB2016/058109 WO2018122589A1 (zh) | 2016-12-30 | 2016-12-30 | 一种基于红外热像图分析的沥青路面裂缝发育程度检测方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018122809A1 true WO2018122809A1 (zh) | 2018-07-05 |
Family
ID=59713564
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2016/058109 WO2018122589A1 (zh) | 2016-12-30 | 2016-12-30 | 一种基于红外热像图分析的沥青路面裂缝发育程度检测方法 |
PCT/IB2017/058548 WO2018122818A1 (zh) | 2016-12-30 | 2017-12-30 | 一种基于红外热像图分析的沥青路面裂缝发育程度检测方法 |
PCT/IB2017/058549 WO2018122819A1 (zh) | 2016-12-30 | 2017-12-30 | 一种基于双目图像分析的沥青路面病害检测*** |
PCT/IB2017/058540 WO2018122810A1 (zh) | 2016-12-30 | 2017-12-30 | 一种基于动态红外热像图处理的地下管廊渗漏检测方法 |
PCT/IB2017/058539 WO2018122809A1 (zh) | 2016-12-30 | 2017-12-30 | 一种基于静态红外热像图处理的地下管廊渗漏检测方法 |
Family Applications Before (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2016/058109 WO2018122589A1 (zh) | 2016-12-30 | 2016-12-30 | 一种基于红外热像图分析的沥青路面裂缝发育程度检测方法 |
PCT/IB2017/058548 WO2018122818A1 (zh) | 2016-12-30 | 2017-12-30 | 一种基于红外热像图分析的沥青路面裂缝发育程度检测方法 |
PCT/IB2017/058549 WO2018122819A1 (zh) | 2016-12-30 | 2017-12-30 | 一种基于双目图像分析的沥青路面病害检测*** |
PCT/IB2017/058540 WO2018122810A1 (zh) | 2016-12-30 | 2017-12-30 | 一种基于动态红外热像图处理的地下管廊渗漏检测方法 |
Country Status (4)
Country | Link |
---|---|
US (2) | US11486548B2 (zh) |
CN (5) | CN109804119B (zh) |
GB (6) | GB201711412D0 (zh) |
WO (5) | WO2018122589A1 (zh) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109816656A (zh) * | 2019-02-01 | 2019-05-28 | 辽宁工程技术大学 | 一种火电厂负压侧***漏点精确定位方法 |
CN109859125A (zh) * | 2019-01-14 | 2019-06-07 | 广东工业大学 | 基于形态学检测与小波变换的图像高光修复方法 |
WO2020015354A1 (zh) * | 2018-07-17 | 2020-01-23 | 北京讯腾智慧科技股份有限公司 | 一种基于北斗差分定位的燃气管道的修补方法及*** |
CN111242123A (zh) * | 2020-01-07 | 2020-06-05 | 西安交通大学 | 一种基于红外图像的电力设备故障诊断方法 |
CN112927223A (zh) * | 2021-03-29 | 2021-06-08 | 南通大学 | 一种基于红外热成像仪的玻璃幕墙检测方法 |
CN113777028A (zh) * | 2021-11-11 | 2021-12-10 | 成都理工大学 | 测量凝胶类堵漏材料与岩石壁面粘附强度的装置和方法 |
CN114034405A (zh) * | 2021-11-08 | 2022-02-11 | 北京航空航天大学 | 一种非接触式测温方法及*** |
CN114511469A (zh) * | 2022-04-06 | 2022-05-17 | 江苏游隼微电子有限公司 | 一种图像智能降噪先验检测方法 |
CN116823839A (zh) * | 2023-08-31 | 2023-09-29 | 梁山中维热力有限公司 | 基于热红外图像的管道泄漏检测方法 |
CN117392140A (zh) * | 2023-12-13 | 2024-01-12 | 宏发建设有限公司 | 一种基于图像处理的建筑幕墙玻璃破裂检测方法及*** |
CN118154594A (zh) * | 2024-05-10 | 2024-06-07 | 山东力乐包装股份有限公司 | 一种基于电数字数据处理的木质托盘缺陷分析*** |
Families Citing this family (153)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10970590B2 (en) * | 2015-06-05 | 2021-04-06 | Schlumberger Technology Corporation | Image-based wellsite equipment health monitoring |
US10551297B2 (en) * | 2017-09-22 | 2020-02-04 | Saudi Arabian Oil Company | Thermography image processing with neural networks to identify corrosion under insulation (CUI) |
CN107767377B (zh) * | 2017-11-09 | 2024-02-06 | 高视科技(苏州)股份有限公司 | 基于双目视觉***的液晶屏缺陷与灰尘区分法及检测装置 |
CN108364280B (zh) * | 2018-01-03 | 2022-04-15 | 东南大学 | 结构裂缝自动化描绘及宽度精准测量方法与设备 |
US10643324B2 (en) | 2018-08-30 | 2020-05-05 | Saudi Arabian Oil Company | Machine learning system and data fusion for optimization of deployment conditions for detection of corrosion under insulation |
US10533937B1 (en) | 2018-08-30 | 2020-01-14 | Saudi Arabian Oil Company | Cloud-based machine learning system and data fusion for the prediction and detection of corrosion under insulation |
JP7056804B2 (ja) * | 2018-09-28 | 2022-04-19 | 日本電気株式会社 | 経験損失推定システム、経験損失推定方法および経験損失推定プログラム |
CN109488888B (zh) * | 2018-11-06 | 2020-07-17 | 沈阳天眼智云信息科技有限公司 | 基于对红外温度场多元分析的金属管道泄漏监测方法 |
CN109358060B (zh) * | 2018-11-14 | 2023-08-25 | 浙江工业大学 | 一种用于检测并标记道路地砖松动情况的***及方法 |
US10878596B2 (en) | 2018-11-29 | 2020-12-29 | International Business Machines Corporation | Object oriented image normalization |
US11143599B2 (en) | 2018-12-03 | 2021-10-12 | Mistras Group, Inc. | Systems and methods for inspecting pipelines using a pipeline inspection robot |
US10783623B2 (en) | 2018-12-03 | 2020-09-22 | Mistras Group, Inc. | Systems and methods for inspecting pipelines using a robotic imaging system |
CN109632963B (zh) * | 2019-01-11 | 2020-10-20 | 南京航空航天大学 | 一种基于时不变特征信号构建的结构损伤四维成像方法 |
CN109801282A (zh) * | 2019-01-24 | 2019-05-24 | 湖北大学 | 路面状况检测方法、处理方法、装置及*** |
CN109800739B (zh) * | 2019-02-21 | 2023-04-25 | 四川中天炬矿业有限公司 | 电加热旋转窑温度检测装置 |
CN109858570A (zh) * | 2019-03-08 | 2019-06-07 | 京东方科技集团股份有限公司 | 图像分类方法及***、计算机设备及介质 |
CN109919139B (zh) * | 2019-04-01 | 2021-02-09 | 杭州晶一智能科技有限公司 | 基于双目立体视觉的路面状况快速检测方法 |
CN109903325B (zh) * | 2019-04-03 | 2021-05-11 | 杭州晶一智能科技有限公司 | 基于立体视觉深度信息的地面精确描述方法 |
CN110232666B (zh) * | 2019-06-17 | 2020-04-28 | 中国矿业大学(北京) | 基于暗原色先验的地下管道图像快速去雾方法 |
CN110349134B (zh) * | 2019-06-27 | 2022-12-09 | 广东技术师范大学天河学院 | 一种基于多标签卷积神经网络的管道病害图像分类方法 |
CN110205910A (zh) * | 2019-07-08 | 2019-09-06 | 河北工程大学 | 一种铺面结构表面平整性智能检测与分析装置 |
CN110320236B (zh) * | 2019-07-19 | 2021-09-14 | 沈阳工业大学 | 大型风力机叶片内部缺陷深度的红外测量方法 |
CN110490862B (zh) * | 2019-08-22 | 2022-08-09 | 联峰钢铁(张家港)有限公司 | 一种提高连铸探伤合格率的方法及装置 |
JP7285174B2 (ja) * | 2019-09-04 | 2023-06-01 | 株式会社トプコン | 壁面のひび割れ測定機および測定方法 |
CN110674754A (zh) * | 2019-09-25 | 2020-01-10 | 武汉易视维科技有限公司 | 一种在线间歇中空滤棒视觉缺陷检测识别*** |
CN111025285B (zh) * | 2019-11-01 | 2021-08-24 | 长安大学 | 一种基于图谱灰度自适应选取的沥青路面水损害检测方法 |
CN110793722B (zh) * | 2019-11-08 | 2021-11-30 | 国家计算机网络与信息安全管理中心 | 基于机器学习的铅酸蓄电池非接触式漏液检测装置及方法 |
CN111062959B (zh) * | 2019-11-28 | 2022-04-12 | 重庆大学 | 一种航空薄壁微构零件切出底边毛刺特征的提取及表征方法 |
CN111209794A (zh) * | 2019-12-11 | 2020-05-29 | 浙江省交通运输科学研究院 | 一种基于探地雷达图像的地下管道识别方法 |
CN111191540A (zh) * | 2019-12-20 | 2020-05-22 | 数海信息技术有限公司 | 一种基于温度梯度的对象状态分析方法及*** |
US11651278B2 (en) * | 2019-12-23 | 2023-05-16 | Saudi Arabian Oil Company | Pipeline sensor integration for product mapping |
CN111145205B (zh) * | 2019-12-24 | 2022-04-12 | 天津农学院 | 基于红外图像的多猪只场景下猪体温检测方法 |
CN111210405A (zh) * | 2019-12-27 | 2020-05-29 | 山东省特种设备检验研究院有限公司 | 一种基于红外成像的挥发性有机物泄露检测方法 |
US11774990B2 (en) | 2019-12-30 | 2023-10-03 | Marathon Petroleum Company Lp | Methods and systems for inline mixing of hydrocarbon liquids based on density or gravity |
CA3104319C (en) | 2019-12-30 | 2023-01-24 | Marathon Petroleum Company Lp | Methods and systems for spillback control of in-line mixing of hydrocarbon liquids |
US11607654B2 (en) | 2019-12-30 | 2023-03-21 | Marathon Petroleum Company Lp | Methods and systems for in-line mixing of hydrocarbon liquids |
CN111209876B (zh) * | 2020-01-10 | 2023-04-07 | 汕头大学 | 一种漏油缺陷检测方法及*** |
US11054538B1 (en) * | 2020-01-27 | 2021-07-06 | S-L Ip, Llc | Modification and assessment |
CN111400891B (zh) * | 2020-03-11 | 2023-08-11 | 中煤航测遥感集团有限公司 | 管道巡检点偏差程度获取方法、装置、设备及存储介质 |
CN111583413B (zh) * | 2020-03-24 | 2023-06-02 | 交通运输部科学研究院 | 一种路面病害bim参数化建模与增强现实移动巡检方法 |
CN111445462A (zh) * | 2020-03-30 | 2020-07-24 | 国家计算机网络与信息安全管理中心 | 一种基于神经网络和热像图的蓄电池漏液检测方法 |
CN111524146B (zh) * | 2020-04-13 | 2023-05-05 | 同济大学 | 基于红外图像的暖通空调热水管道故障诊断方法及*** |
CN111489352B (zh) * | 2020-04-29 | 2023-06-02 | 安徽国钜工程机械科技有限公司 | 一种基于数字图像处理的隧道缝隙检测与测量方法及装置 |
CN111583362A (zh) * | 2020-04-30 | 2020-08-25 | 东南大学 | 一种沥青路面病害状况检测的可视化记录方法 |
US11645766B2 (en) | 2020-05-04 | 2023-05-09 | International Business Machines Corporation | Dynamic sampling for object recognition |
CN111754455B (zh) * | 2020-05-15 | 2024-03-19 | 华能国际电力股份有限公司海门电厂 | 一种火电厂漏水检测方法和*** |
CN111640117B (zh) * | 2020-06-03 | 2024-03-05 | 四川正大新材料科技有限公司 | 一种寻找建筑物渗漏源位置的方法 |
CN111738990A (zh) * | 2020-06-03 | 2020-10-02 | 东北林业大学 | 基于log算法的损伤水果温度场检测方法 |
CN111784645B (zh) * | 2020-06-15 | 2023-08-22 | 北京科技大学 | 一种充填管道裂纹检测方法 |
CN111767815A (zh) * | 2020-06-22 | 2020-10-13 | 浙江省机电设计研究院有限公司 | 一种隧道渗漏水识别方法 |
CN111746537B (zh) * | 2020-06-22 | 2022-05-17 | 重庆长安汽车股份有限公司 | 基于路面平整度的自适应巡航车速控制***、方法及车辆 |
CN111693536A (zh) * | 2020-06-24 | 2020-09-22 | 河南高建工程管理有限公司 | 一种基于红外热成像的地下综合管廊施工防水检测方法 |
CN111750283A (zh) * | 2020-06-26 | 2020-10-09 | 西北工业大学 | 基于深度学习的强背景噪声环境下的气体管道泄漏识别方法 |
CN111795883B (zh) * | 2020-07-06 | 2023-04-25 | 中国石油天然气集团有限公司 | 一种含裂纹金相试样的浸蚀及图像处理方法和设备 |
CN111767874B (zh) * | 2020-07-06 | 2024-02-13 | 中兴飞流信息科技有限公司 | 一种基于深度学习的路面病害检测方法 |
CN112036073A (zh) * | 2020-07-16 | 2020-12-04 | 成都飞机工业(集团)有限责任公司 | 一种3d打印零件测量结果矫正方法 |
CN111812215B (zh) * | 2020-07-22 | 2021-06-29 | 南京航空航天大学 | 一种飞行器结构损伤的监测方法 |
CN114002222B (zh) * | 2020-07-28 | 2024-05-14 | 宝山钢铁股份有限公司 | 一种用于在役管线的智能探伤装置、***及其方法 |
CN111811933B (zh) * | 2020-07-31 | 2022-03-11 | 中国矿业大学 | 一种承载煤岩损伤破裂过程中的红外辐射信息去噪方法 |
CN112032568A (zh) * | 2020-08-14 | 2020-12-04 | 常州机电职业技术学院 | 一种埋地燃气管道泄漏危险度预测算法及预测方法 |
CN112032567A (zh) * | 2020-08-14 | 2020-12-04 | 常州机电职业技术学院 | 一种埋地燃气管道泄漏危险度预测*** |
CN112004093B (zh) * | 2020-09-02 | 2022-07-12 | 烟台艾睿光电科技有限公司 | 一种红外数据压缩方法、装置及设备 |
CN111999001B (zh) * | 2020-09-09 | 2022-07-08 | 中国南方电网有限责任公司超高压输电公司大理局 | 一种基于图像处理的换流站空冷器泄漏检测方法及*** |
CN112085037B (zh) * | 2020-09-21 | 2024-04-09 | 国网吉林省电力有限公司电力科学研究院 | 一种变电设备红外热故障特征提取及数字化表达方法 |
CN112183516A (zh) * | 2020-09-22 | 2021-01-05 | 广东中鹏热能科技有限公司 | 基于图形图像识别技术对单照片多区域最高温的读取方法 |
CN112367461B (zh) * | 2020-10-27 | 2021-12-17 | 京东方科技集团股份有限公司 | 仪表图像样本制作方法及***、存储介质、电子设备 |
CN112270663B (zh) * | 2020-10-27 | 2023-11-24 | 北京京能东方建设工程有限公司 | 基于蜂巢网络环境的沥青路面过筛修复*** |
CN112345084B (zh) * | 2020-11-05 | 2021-09-28 | 北京易达恩能科技有限公司 | 基于数字孪生环境的三维温度场构建方法及装置 |
CN112347919B (zh) * | 2020-11-06 | 2023-07-25 | 中国矿业大学(北京) | 一种地下天然气微泄漏点的遥感探测方法 |
CN112381796B (zh) * | 2020-11-16 | 2021-08-03 | 广东电网有限责任公司肇庆供电局 | 一种基于红外数据的导线缺陷识别及检测方法 |
CN112464779B (zh) * | 2020-11-23 | 2022-10-11 | 武汉舜陈技术有限公司 | 一种基于柔性材料的图形识别定位方法 |
CN112485329B (zh) * | 2020-11-27 | 2024-01-26 | 重庆商勤科技有限公司 | 基于热成像与超声相结合检测排污口的方法、装置及*** |
CN112541887B (zh) * | 2020-12-02 | 2024-05-03 | 中国华能集团有限公司南方分公司 | 一种火电厂多管道设备运行现场漏水缺陷检测方法 |
CN112698015B (zh) * | 2020-12-08 | 2024-04-02 | 温州鼎玛建筑技术有限公司 | 一种道路桥梁裂缝检测*** |
CN112417378A (zh) * | 2020-12-10 | 2021-02-26 | 常州大学 | 一种基于无人机图像处理的中华绒螯蟹质量估算方法 |
CN112609547A (zh) * | 2020-12-11 | 2021-04-06 | 中山火炬职业技术学院 | 一种沥青路面各施工阶段层厚的监测方法 |
CN112560707B (zh) * | 2020-12-18 | 2022-10-21 | 中国民用航空总局第二研究所 | 基于激光光源的移动式道面检测方法及*** |
CN112508944A (zh) * | 2020-12-27 | 2021-03-16 | 中信重工开诚智能装备有限公司 | 一种应用于煤矿井下供水管路的泄漏检测方法 |
CN112766251B (zh) * | 2020-12-30 | 2022-06-14 | 广东电网有限责任公司佛山供电局 | 变电设备红外检测方法、***、储存介质及计算机设备 |
CN112767322B (zh) * | 2021-01-05 | 2023-06-13 | 成都圭目机器人有限公司 | 一种机场水泥道面fod风险评估方法和装置 |
CN112881432B (zh) * | 2021-01-12 | 2022-11-29 | 成都泓睿科技有限责任公司 | 一种带液玻璃瓶瓶口裂纹检测方法 |
CN112763349B (zh) * | 2021-01-21 | 2021-11-26 | 北京航空航天大学 | 一种复合材料结构冲击损伤的监测方法 |
CN112834457B (zh) * | 2021-01-23 | 2022-06-03 | 中北大学 | 基于反射式激光热成像的金属微裂纹三维表征***及方法 |
CN112669316B (zh) * | 2021-01-29 | 2023-05-30 | 南方电网调峰调频发电有限公司 | 电力生产异常监控方法、装置、计算机设备和存储介质 |
CA3211954A1 (en) * | 2021-03-15 | 2022-09-22 | Emil Sylvester RAMOS | System and method for automatic monitoring of pavement condition |
US11578836B2 (en) | 2021-03-16 | 2023-02-14 | Marathon Petroleum Company Lp | Scalable greenhouse gas capture systems and methods |
US12012883B2 (en) | 2021-03-16 | 2024-06-18 | Marathon Petroleum Company Lp | Systems and methods for backhaul transportation of liquefied gas and CO2 using liquefied gas carriers |
US11655940B2 (en) | 2021-03-16 | 2023-05-23 | Marathon Petroleum Company Lp | Systems and methods for transporting fuel and carbon dioxide in a dual fluid vessel |
CN113077562B (zh) * | 2021-04-09 | 2021-12-14 | 北京市燃气集团有限责任公司 | 一种燃气管网智能巡检方法与*** |
CN113203743B (zh) * | 2021-05-20 | 2023-12-12 | 中铁二十一局集团第四工程有限公司 | 一种基于红外热成像分析的路基裂缝检测识别及修复方法 |
CN113252724B (zh) * | 2021-05-21 | 2022-05-31 | 山东中坚工程质量检测有限公司 | 一种外墙保温性能的检测方法 |
CN113177611B (zh) * | 2021-05-24 | 2022-11-01 | 河北工业大学 | 基于力学指标和人工神经网络的路面病害快速巡检方法 |
EP4357746A1 (en) * | 2021-06-16 | 2024-04-24 | Konica Minolta, Inc. | Gas concentration feature quantity estimation device, gas concentration feature quantity estimation method, program, and gas concentration feature quantity inference model generation device |
CN113375065B (zh) * | 2021-07-01 | 2022-05-24 | 北京化工大学 | 管道泄漏监测中趋势信号的消除方法及装置 |
DE102021207204A1 (de) * | 2021-07-08 | 2023-01-12 | Zf Friedrichshafen Ag | System und Verfahren zum Schätzen der Tiefe mindestens eines zumindest zum Teil mit Wasser gefüllten Schlaglochs und entsprechendes Fahrerassistenzsystem |
CN113628164A (zh) * | 2021-07-12 | 2021-11-09 | 北京科技大学 | 一种基于深度学习与web端定位的路面裂缝检测方法 |
CN113606502B (zh) * | 2021-07-16 | 2023-03-24 | 青岛新奥燃气设施开发有限公司 | 一种基于机器视觉判断操作人员执行管道漏气检测的方法 |
CN113592798B (zh) * | 2021-07-21 | 2023-08-15 | 山东理工大学 | 一种道路病害智能辨识方法、***、终端及介质 |
CN113849901B (zh) * | 2021-07-28 | 2024-05-03 | 上海机电工程研究所 | 针对接触换热系数辨识的改进自适应优化方法及*** |
CN113591721B (zh) * | 2021-08-02 | 2022-01-25 | 山东省交通科学研究院 | 一种利用无人机确定新摊铺沥青路面取芯点位置的方法 |
US11447877B1 (en) | 2021-08-26 | 2022-09-20 | Marathon Petroleum Company Lp | Assemblies and methods for monitoring cathodic protection of structures |
CN113838078B (zh) * | 2021-09-06 | 2023-06-30 | 中国矿业大学(北京) | 采煤塌陷地裂缝的识别与提取方法、装置及存储介质 |
CN113503974B (zh) * | 2021-09-09 | 2021-11-23 | 江苏沃泰冶金设备有限公司 | 基于pid的热成像检测***、方法及瓦斯灰输送装置 |
CN113963285B (zh) * | 2021-09-09 | 2022-06-10 | 山东金宇信息科技集团有限公司 | 一种基于5g的道路养护方法及设备 |
CN113884464B (zh) * | 2021-09-27 | 2024-04-26 | 西安空天能源动力智能制造研究院有限公司 | 一种基于红外热像仪的涂层波段发射率外场测量方法 |
CN114239194A (zh) * | 2021-10-20 | 2022-03-25 | 中州水务控股有限公司 | 一种大水量输供水管网漏损分析和漏点定位方法 |
US11598689B1 (en) | 2021-10-24 | 2023-03-07 | Philip Becerra | Method of detecting and identifying underground leaking pipes |
CN114113217B (zh) * | 2021-11-15 | 2024-07-12 | 中国矿业大学 | 一种煤岩体损伤程度的红外辐射量化评价方法 |
CN114037633B (zh) * | 2021-11-18 | 2022-07-15 | 南京智谱科技有限公司 | 一种红外图像处理的方法及装置 |
CN114049336B (zh) * | 2021-11-18 | 2024-06-14 | 国网重庆市电力公司电力科学研究院 | Gis套管温度异常检测方法、装置、设备及可读存储介质 |
CN114384073B (zh) * | 2021-11-30 | 2023-08-04 | 杭州申昊科技股份有限公司 | 一种地铁隧道裂纹检测方法及*** |
CN114487012B (zh) * | 2021-12-29 | 2023-11-03 | 南京大学 | 一种土体表面裂隙发育预判方法 |
CN114383789B (zh) * | 2022-01-05 | 2024-06-18 | 中国科学院合肥物质科学研究院 | 基于激励源与容性阻尼模型的金属容器气密性红外检测方法 |
CN114363520A (zh) * | 2022-01-11 | 2022-04-15 | 河北德冠隆电子科技有限公司 | 一种自动巡视快速定位目标的方法 |
CN114119614B (zh) * | 2022-01-27 | 2022-07-26 | 天津风霖物联网科技有限公司 | 一种远程检测建筑物的裂缝的方法 |
CN114459708A (zh) * | 2022-02-10 | 2022-05-10 | 合肥永信科翔智能技术有限公司 | 一种基于气体智能感知的泄漏气体监测*** |
TWI833168B (zh) * | 2022-02-23 | 2024-02-21 | 南亞科技股份有限公司 | 異常診斷方法 |
CN114565793B (zh) * | 2022-02-28 | 2023-05-23 | 湖南北斗微芯产业发展有限公司 | 一种道路交通裂缝监测方法以及*** |
CN114577405A (zh) * | 2022-02-28 | 2022-06-03 | 辽宁石油化工大学 | 一种基于红外成像技术的城市地下污水管道缺陷检测装置 |
CN114663408B (zh) * | 2022-03-30 | 2023-04-28 | 江苏天晶智能装备有限公司 | 一种基于人工智能的门窗水密性能检测方法 |
CN114913316B (zh) * | 2022-04-02 | 2023-04-07 | 淮沪电力有限公司田集第二发电厂 | 工业设备表计识别的图像分类方法、装置、电子设备和存储介质 |
CN114459728B (zh) * | 2022-04-13 | 2022-06-24 | 中国空气动力研究与发展中心高速空气动力研究所 | 一种低温温敏漆转捩测量试验方法 |
CN114838297B (zh) * | 2022-04-14 | 2024-03-15 | 七腾机器人有限公司 | 一种原油管道泄漏检测方法、装置、存储介质及*** |
US11686070B1 (en) | 2022-05-04 | 2023-06-27 | Marathon Petroleum Company Lp | Systems, methods, and controllers to enhance heavy equipment warning |
CN114972757A (zh) * | 2022-05-31 | 2022-08-30 | 山东大学 | 一种隧道渗漏水区域识别方法及*** |
CN114878796B (zh) * | 2022-07-12 | 2022-09-16 | 唐山陆达公路养护有限公司 | 基于道路养护的评估监测平台 |
CN115146513B (zh) * | 2022-07-26 | 2023-04-07 | 北京科技大学 | 一种管线渗漏致塌模拟仿真预警方法和*** |
CN115100209B (zh) * | 2022-08-28 | 2022-11-08 | 电子科技大学 | 一种基于摄像机的图像质量的修正方法及修正*** |
CN115184378B (zh) * | 2022-09-15 | 2024-03-29 | 北京思莫特科技有限公司 | 一种基于移动设备的混凝土结构病害检测***及方法 |
CN115290211B (zh) * | 2022-10-10 | 2023-01-20 | 广东电网有限责任公司中山供电局 | 一种基于光纤传感技术的输电线环境温度测量方法 |
CN115762155B (zh) * | 2022-11-14 | 2024-03-22 | 东南大学 | 一种高速公路路面异常监测方法和*** |
CN115899598B (zh) * | 2022-11-17 | 2024-06-21 | 浙江英集动力科技有限公司 | 一种融合听觉和视觉特征的供热管网状态监测方法及*** |
US12012082B1 (en) | 2022-12-30 | 2024-06-18 | Marathon Petroleum Company Lp | Systems and methods for a hydraulic vent interlock |
CN115684272B (zh) * | 2023-01-03 | 2023-03-21 | 广州市市政工程试验检测有限公司 | 一种基于红外摄像机的钢结构裂纹检测方法 |
US12006014B1 (en) | 2023-02-18 | 2024-06-11 | Marathon Petroleum Company Lp | Exhaust vent hoods for marine vessels and related methods |
CN115861825B (zh) * | 2023-02-27 | 2023-04-25 | 中铁电气化局集团有限公司 | 一种基于图像识别的2c检测方法 |
CN115855070B (zh) * | 2023-03-01 | 2023-04-28 | 东莞先知大数据有限公司 | 一种水管漏水检测方法、装置、电子设备和存储介质 |
CN116416270B (zh) * | 2023-03-24 | 2024-01-23 | 北京城市轨道交通咨询有限公司 | 一种监测地下作业面渗漏水的方法及装置 |
CN116095914B (zh) * | 2023-04-10 | 2023-08-25 | 同方德诚(山东)科技股份公司 | 一种基于大数据的智慧建筑照明调节方法及*** |
CN116152231B (zh) * | 2023-04-17 | 2023-07-14 | 卡松科技股份有限公司 | 基于图像处理的润滑油内杂质检测方法 |
US11953161B1 (en) | 2023-04-18 | 2024-04-09 | Intelcon System C.A. | Monitoring and detecting pipeline leaks and spills |
CN116308217B (zh) * | 2023-05-19 | 2023-08-01 | 中交第四航务工程勘察设计院有限公司 | 一种基于物联网的混凝土监控平台管理方法及*** |
CN116403057B (zh) * | 2023-06-09 | 2023-08-18 | 山东瑞盈智能科技有限公司 | 一种基于多源图像融合的输电线路巡检方法及*** |
CN116433668B (zh) * | 2023-06-14 | 2023-09-12 | 东营孚瑞特能源设备有限公司 | 一种智能液压油管漏油检测方法 |
CN116758085B (zh) * | 2023-08-21 | 2023-11-03 | 山东昆仲信息科技有限公司 | 一种气体污染红外图像视觉辅助检测方法 |
CN116862918B (zh) * | 2023-09-05 | 2023-11-24 | 浙江奔月电气科技有限公司 | 基于人工智能的环网柜内部凝露实时检测方法 |
CN117169086A (zh) * | 2023-09-08 | 2023-12-05 | 中建安装集团有限公司 | 一种建筑物地下防水层施工质量检测方法、介质及*** |
CN117309247B (zh) * | 2023-11-28 | 2024-03-01 | 北京市农林科学院信息技术研究中心 | 鸡舍密闭性的判别方法、装置、***、设备及介质 |
CN117830300B (zh) * | 2024-03-04 | 2024-05-14 | 新奥新能源工程技术有限公司 | 一种基于视觉的燃气管道外观质量检测方法 |
CN117949143B (zh) * | 2024-03-26 | 2024-07-02 | 四川名人居门窗有限公司 | 一种门窗渗漏检测及反馈***及方法 |
CN117974633B (zh) * | 2024-03-28 | 2024-06-07 | 潍坊科技学院 | 基于图像处理的番茄病虫害智能检测方法 |
CN118037730B (zh) * | 2024-04-12 | 2024-06-18 | 广州航海学院 | 一种基于计算机图像处理的裂缝长度检测*** |
CN118038283B (zh) * | 2024-04-15 | 2024-06-21 | 贵州黔通工程技术有限公司 | 一种沥青路面隐伏病害检测方法及设备 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5272646A (en) * | 1991-04-11 | 1993-12-21 | Farmer Edward J | Method for locating leaks in a fluid pipeline and apparatus therefore |
CN1936414A (zh) * | 2006-08-12 | 2007-03-28 | 陈宜中 | 非导电材料供水管道检漏法 |
CN102135234A (zh) * | 2010-01-27 | 2011-07-27 | 捷达世软件(深圳)有限公司 | 水管泄漏监控***及方法 |
CN102155628A (zh) * | 2010-12-01 | 2011-08-17 | 广西大学 | 地下排水管道渗漏检测方法及装置 |
CN102374385A (zh) * | 2011-07-21 | 2012-03-14 | 王斌 | 一种管道漏水检测装置及方法 |
CN102537667A (zh) * | 2011-12-29 | 2012-07-04 | 杭州翰平电子技术有限公司 | 一种地下水管渗漏检测定位***及方法 |
CN104776318A (zh) * | 2014-05-19 | 2015-07-15 | 白运福 | 一种地下水管漏水检测处理装置 |
CN105465613A (zh) * | 2015-11-19 | 2016-04-06 | 中建七局第二建筑有限公司 | 城市地下排水管道渗漏定位***及其施工方法 |
CN205786366U (zh) * | 2016-05-26 | 2016-12-07 | 国网浙江省电力公司宁波供电公司 | 一种电缆隧道水泥管片缺陷渗水特征红外热像实验装置 |
Family Cites Families (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU894372A1 (ru) * | 1978-06-30 | 1981-12-30 | Центральный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Черной Металлургии Им.И.П.Бардина | Измеритель скорости распространени трещины в металле |
JPS5629129A (en) * | 1979-08-17 | 1981-03-23 | Sharp Corp | Measuring system of road surface temperature |
JPS62172249A (ja) * | 1986-01-25 | 1987-07-29 | Kajima Corp | 煙突の劣化診断方法及び装置 |
US4899296A (en) * | 1987-11-13 | 1990-02-06 | Khattak Anwar S | Pavement distress survey system |
JPH08184398A (ja) * | 1995-01-05 | 1996-07-16 | Mitsubishi Denki Bill Techno Service Kk | 埋設配管漏水箇所特定方法 |
JPH0961138A (ja) * | 1995-08-24 | 1997-03-07 | Mitsubishi Heavy Ind Ltd | ひび割れ抽出装置 |
JP3460896B2 (ja) | 1995-09-14 | 2003-10-27 | ローランド株式会社 | 電子楽器の楽音生成装置 |
JPH1010064A (ja) * | 1996-06-19 | 1998-01-16 | Constec:Kk | モルタル吹き付け法面の点検方法 |
AUPP107597A0 (en) * | 1997-12-22 | 1998-01-22 | Commonwealth Scientific And Industrial Research Organisation | Road pavement deterioration inspection system |
JP2000035372A (ja) * | 1998-07-16 | 2000-02-02 | Ishikawajima Inspection & Instrumentation Co | 赤外線を用いた発泡検査方法 |
JP3205806B2 (ja) * | 1999-04-02 | 2001-09-04 | 鹿島建設株式会社 | アスファルト表面層内部の水探知方法および装置 |
JP2001215164A (ja) * | 2000-02-02 | 2001-08-10 | Kansai Electric Power Co Inc:The | 霧状水滴を利用した真空・ガス漏れ検知装置 |
JP2004191258A (ja) * | 2002-12-12 | 2004-07-08 | Yoshitake Eda | 建築物の漏水路検知方法 |
US6874932B2 (en) * | 2003-06-30 | 2005-04-05 | General Electric Company | Methods for determining the depth of defects |
US7073979B2 (en) * | 2003-11-26 | 2006-07-11 | Aries Industries Incorporated | Method and apparatus for performing sewer maintenance with a thermal sensor |
CN100402753C (zh) * | 2003-12-10 | 2008-07-16 | 刘世俊 | 高级路面裂纹处理工艺方法 |
US7358860B2 (en) * | 2005-03-31 | 2008-04-15 | American Air Liquide, Inc. | Method and apparatus to monitor and detect cryogenic liquefied gas leaks |
CN101070947A (zh) | 2006-04-28 | 2007-11-14 | 王明根 | 管道接缝渗漏检测*** |
US8288726B2 (en) * | 2006-12-19 | 2012-10-16 | Weil Gary J | Remote sensing of subsurface artifacts by use of visual and thermal imagery |
WO2010106639A1 (ja) * | 2009-03-17 | 2010-09-23 | 西日本高速道路エンジニアリング四国株式会社 | 構造物の損傷深さ判定方法とその装置及び構造物の損傷処置判定方法とその装置 |
CN201449248U (zh) * | 2009-03-18 | 2010-05-05 | 河海大学 | 一种土体裂隙发育监测仪 |
CN101701919B (zh) * | 2009-11-20 | 2011-05-11 | 长安大学 | 一种基于图像的路面裂缝检测***及检测方法 |
US20110221906A1 (en) * | 2010-03-12 | 2011-09-15 | Board Of Regents, The University Of Texas System | Multiple Camera System for Automated Surface Distress Measurement |
CN101845787A (zh) * | 2010-04-09 | 2010-09-29 | 同济大学 | 基于双目视觉的水泥混凝土路面错台检测装置及方法 |
WO2012096530A2 (en) * | 2011-01-13 | 2012-07-19 | Samsung Electronics Co., Ltd. | Multi-view rendering apparatus and method using background pixel expansion and background-first patch matching |
CN102108666B (zh) * | 2011-01-17 | 2012-05-30 | 长安大学 | 一种沥青路面施工质量实时控制方法 |
CN102182137A (zh) * | 2011-02-25 | 2011-09-14 | 广州飒特电力红外技术有限公司 | 路面缺陷检测***及方法 |
CN102621419A (zh) * | 2012-03-28 | 2012-08-01 | 山东省电力学校 | 基于激光和双目视觉图像对线路电气设备自动识别和监测方法 |
CN102636313B (zh) * | 2012-04-11 | 2014-12-03 | 浙江工业大学 | 基于红外热成像图像处理的渗漏源检测装置 |
RU2511275C2 (ru) * | 2012-07-16 | 2014-04-10 | Федеральное государственное унитарное предприятие "Научно-исследовательский институт физических проблем им. Ф.В. Лукина" | Наноструктурный ик-приемник (болометр) с большой поверхностью поглощения |
CN103308521A (zh) * | 2012-08-29 | 2013-09-18 | 中国人民解放军第二炮兵工程大学 | 一种增强红外热波检测图像缺陷对比度的方法 |
CN102927448B (zh) * | 2012-09-25 | 2016-12-21 | 北京声迅电子股份有限公司 | 管道无损检测方法 |
CN103217256A (zh) * | 2013-03-20 | 2013-07-24 | 北京理工大学 | 基于红外图像的局部灰度-熵差的泄漏检测定位方法 |
CN103321129A (zh) * | 2013-06-18 | 2013-09-25 | 中山市拓维电子科技有限公司 | 基于3g网络的红外热像的远程路面施工诊断***及方法 |
CN103808760B (zh) * | 2013-12-12 | 2017-04-26 | 交通运输部公路科学研究所 | 混凝土结构红外热成像无损检测用热激励装置 |
CN103882891B (zh) * | 2014-01-16 | 2016-06-08 | 同济大学 | 利用红外热场快速预测地下连续墙侧壁渗漏的方法 |
CN103912791B (zh) * | 2014-01-26 | 2016-05-04 | 清华大学深圳研究生院 | 地下管网泄漏探测方法 |
US9857228B2 (en) * | 2014-03-25 | 2018-01-02 | Rosemount Inc. | Process conduit anomaly detection using thermal imaging |
US10576907B2 (en) * | 2014-05-13 | 2020-03-03 | Gse Technologies, Llc | Remote scanning and detection apparatus and method |
CN103983514B (zh) * | 2014-05-22 | 2016-06-01 | 中国矿业大学 | 一种煤岩裂隙发育红外辐射监测试验方法 |
CN103983513B (zh) * | 2014-05-22 | 2016-03-02 | 中国矿业大学 | 一种采用红外辐射观测煤岩裂隙发育过程的装置及方法 |
CN104048969A (zh) * | 2014-06-19 | 2014-09-17 | 樊晓东 | 一种隧道病害的识别方法 |
CN104034733A (zh) * | 2014-07-02 | 2014-09-10 | 中国人民解放军国防科学技术大学 | 基于双目视觉监测与表面裂纹图像识别的寿命预测方法 |
CN104574393B (zh) * | 2014-12-30 | 2017-08-11 | 北京恒达锦程图像技术有限公司 | 一种三维路面裂缝图像生成***和方法 |
CN104713885B (zh) * | 2015-03-04 | 2017-06-30 | 中国人民解放军国防科学技术大学 | 一种用于pcb板在线检测的结构光辅助双目测量方法 |
CN104749187A (zh) * | 2015-03-25 | 2015-07-01 | 武汉武大卓越科技有限责任公司 | 基于红外温度场和灰度图像的隧道衬砌病害检测装置 |
CN104764528B (zh) * | 2015-04-03 | 2018-01-12 | 中国矿业大学 | 一种煤岩裂隙发育过程中的热红外信息去噪方法 |
CN105113375B (zh) * | 2015-05-15 | 2017-04-19 | 南京航空航天大学 | 一种基于线结构光的路面裂缝检测***及其检测方法 |
SE539312C2 (en) * | 2015-06-10 | 2017-06-27 | Conny Andersson Med Firma Ca Konsult | A method of determining the quality of a newly produced asphalt pavement |
CN205115977U (zh) * | 2015-11-23 | 2016-03-30 | 张先 | 道路桥梁沥青路面裂缝检测装置 |
CN105719283A (zh) * | 2016-01-18 | 2016-06-29 | 苏州科技学院 | 一种基于Hessian矩阵多尺度滤波的路面裂缝图像检测方法 |
CN105717163A (zh) * | 2016-01-29 | 2016-06-29 | 中国商用飞机有限责任公司 | 红外热像检测缺陷的方法 |
CN105527165B (zh) * | 2016-02-02 | 2018-07-24 | 山东省交通科学研究院 | 一种沥青路面裂缝荷载响应相对位移测试方法及测试装置 |
CN105938620B (zh) * | 2016-04-14 | 2018-12-25 | 北京工业大学 | 一种小口径管内焊缝表面缺陷识别装置 |
CN205748654U (zh) * | 2016-06-21 | 2016-11-30 | 国家电网公司 | 基于红外热成像的变压器实时监测*** |
CN106018096A (zh) * | 2016-07-20 | 2016-10-12 | 中国矿业大学 | 煤岩破裂过程中裂隙发育区的红外辐射监测定位方法 |
CN106124949B (zh) * | 2016-08-30 | 2019-08-13 | 国网山东省电力公司济南供电公司 | 一种基于热红外成像技术对绝缘子故障在线监测方法 |
CN206573258U (zh) | 2017-02-20 | 2017-10-20 | 广东工业大学 | 一种管道渗漏检测装置 |
CN206629279U (zh) | 2017-03-30 | 2017-11-10 | 中建地下空间有限公司 | 一种应用于综合管廊的移动巡检*** |
WO2018216629A1 (ja) * | 2017-05-22 | 2018-11-29 | キヤノン株式会社 | 情報処理装置、情報処理方法、及びプログラム |
-
2016
- 2016-12-30 CN CN201680089245.3A patent/CN109804119B/zh active Active
- 2016-12-30 GB GBGB1711412.5A patent/GB201711412D0/en not_active Ceased
- 2016-12-30 WO PCT/IB2016/058109 patent/WO2018122589A1/zh active Application Filing
-
2017
- 2017-12-30 CN CN201780053176.5A patent/CN109743879B/zh active Active
- 2017-12-30 WO PCT/IB2017/058548 patent/WO2018122818A1/zh active Application Filing
- 2017-12-30 GB GB1909416.8A patent/GB2573429B/en active Active
- 2017-12-30 WO PCT/IB2017/058549 patent/WO2018122819A1/zh active Application Filing
- 2017-12-30 US US16/474,710 patent/US11486548B2/en active Active
- 2017-12-30 CN CN201780053170.8A patent/CN110268190B/zh active Active
- 2017-12-30 GB GB1905912.0A patent/GB2571016B/en active Active
- 2017-12-30 WO PCT/IB2017/058540 patent/WO2018122810A1/zh active Application Filing
- 2017-12-30 WO PCT/IB2017/058539 patent/WO2018122809A1/zh active Application Filing
- 2017-12-30 GB GB2006108.1A patent/GB2581294B/en active Active
- 2017-12-30 CN CN201780056386.XA patent/CN109804232B/zh active Active
- 2017-12-30 CN CN201780056387.4A patent/CN109716108B/zh active Active
- 2017-12-30 GB GB1905909.6A patent/GB2569751B/en active Active
- 2017-12-30 GB GB2006107.3A patent/GB2581293B/en active Active
-
2019
- 2019-06-29 US US16/457,985 patent/US11221107B2/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5272646A (en) * | 1991-04-11 | 1993-12-21 | Farmer Edward J | Method for locating leaks in a fluid pipeline and apparatus therefore |
CN1936414A (zh) * | 2006-08-12 | 2007-03-28 | 陈宜中 | 非导电材料供水管道检漏法 |
CN102135234A (zh) * | 2010-01-27 | 2011-07-27 | 捷达世软件(深圳)有限公司 | 水管泄漏监控***及方法 |
CN102155628A (zh) * | 2010-12-01 | 2011-08-17 | 广西大学 | 地下排水管道渗漏检测方法及装置 |
CN102374385A (zh) * | 2011-07-21 | 2012-03-14 | 王斌 | 一种管道漏水检测装置及方法 |
CN102537667A (zh) * | 2011-12-29 | 2012-07-04 | 杭州翰平电子技术有限公司 | 一种地下水管渗漏检测定位***及方法 |
CN104776318A (zh) * | 2014-05-19 | 2015-07-15 | 白运福 | 一种地下水管漏水检测处理装置 |
CN105465613A (zh) * | 2015-11-19 | 2016-04-06 | 中建七局第二建筑有限公司 | 城市地下排水管道渗漏定位***及其施工方法 |
CN205786366U (zh) * | 2016-05-26 | 2016-12-07 | 国网浙江省电力公司宁波供电公司 | 一种电缆隧道水泥管片缺陷渗水特征红外热像实验装置 |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020015354A1 (zh) * | 2018-07-17 | 2020-01-23 | 北京讯腾智慧科技股份有限公司 | 一种基于北斗差分定位的燃气管道的修补方法及*** |
CN109859125B (zh) * | 2019-01-14 | 2022-10-21 | 广东工业大学 | 基于形态学检测与小波变换的图像高光修复方法 |
CN109859125A (zh) * | 2019-01-14 | 2019-06-07 | 广东工业大学 | 基于形态学检测与小波变换的图像高光修复方法 |
CN109816656A (zh) * | 2019-02-01 | 2019-05-28 | 辽宁工程技术大学 | 一种火电厂负压侧***漏点精确定位方法 |
CN109816656B (zh) * | 2019-02-01 | 2023-06-20 | 辽宁工程技术大学 | 一种火电厂负压侧***漏点精确定位方法 |
CN111242123A (zh) * | 2020-01-07 | 2020-06-05 | 西安交通大学 | 一种基于红外图像的电力设备故障诊断方法 |
CN111242123B (zh) * | 2020-01-07 | 2022-10-28 | 西安交通大学 | 一种基于红外图像的电力设备故障诊断方法 |
CN112927223A (zh) * | 2021-03-29 | 2021-06-08 | 南通大学 | 一种基于红外热成像仪的玻璃幕墙检测方法 |
CN114034405A (zh) * | 2021-11-08 | 2022-02-11 | 北京航空航天大学 | 一种非接触式测温方法及*** |
CN113777028B (zh) * | 2021-11-11 | 2022-01-18 | 成都理工大学 | 测量凝胶类堵漏材料与岩石壁面粘附强度的装置和方法 |
CN113777028A (zh) * | 2021-11-11 | 2021-12-10 | 成都理工大学 | 测量凝胶类堵漏材料与岩石壁面粘附强度的装置和方法 |
CN114511469A (zh) * | 2022-04-06 | 2022-05-17 | 江苏游隼微电子有限公司 | 一种图像智能降噪先验检测方法 |
CN114511469B (zh) * | 2022-04-06 | 2022-06-21 | 江苏游隼微电子有限公司 | 一种图像智能降噪先验检测方法 |
CN116823839A (zh) * | 2023-08-31 | 2023-09-29 | 梁山中维热力有限公司 | 基于热红外图像的管道泄漏检测方法 |
CN116823839B (zh) * | 2023-08-31 | 2023-12-01 | 梁山中维热力有限公司 | 基于热红外图像的管道泄漏检测方法 |
CN117392140A (zh) * | 2023-12-13 | 2024-01-12 | 宏发建设有限公司 | 一种基于图像处理的建筑幕墙玻璃破裂检测方法及*** |
CN117392140B (zh) * | 2023-12-13 | 2024-02-06 | 宏发建设有限公司 | 一种基于图像处理的建筑幕墙玻璃破裂检测方法及*** |
CN118154594A (zh) * | 2024-05-10 | 2024-06-07 | 山东力乐包装股份有限公司 | 一种基于电数字数据处理的木质托盘缺陷分析*** |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11221107B2 (en) | Method for leakage detection of underground pipeline corridor based on dynamic infrared thermal image processing | |
Iyer et al. | Segmentation of pipe images for crack detection in buried sewers | |
Yu et al. | Efficient crack detection method for tunnel lining surface cracks based on infrared images | |
CN109544535B (zh) | 一种基于红外截止滤镜光学滤波特性的窥视摄像头检测方法及*** | |
CN111667470B (zh) | 一种基于数字图像的工业管道探伤内壁检测方法 | |
CN112862744B (zh) | 一种基于超声图像的电容内部缺陷智能检测方法 | |
CN107481233A (zh) | 一种应用于fod异物检测雷达中的图像识别方法 | |
CN113313107B (zh) | 一种斜拉桥缆索表面多类型病害智能检测和识别方法 | |
CN105787912B (zh) | 一种基于分类的阶跃型边缘亚像素定位方法 | |
CN105787870A (zh) | 一种图形图像拼接融合*** | |
Li et al. | Detection algorithm of defects on polyethylene gas pipe using image recognition | |
Hu et al. | Rail surface spalling detection based on visual saliency | |
Qi et al. | Micro-concrete crack detection of underwater structures based on convolutional neural network | |
KR102355997B1 (ko) | 스마트글래스 기반의 콘크리트 구조물 건전도 모니터링 방법 | |
Kröhnert et al. | Segmentation of environmental time lapse image sequences for the determination of shore lines captured by hand-held smartphone cameras | |
KR101557271B1 (ko) | 영상 내 원 형상 검출에 따른 검출 원 형상의 근사화 방법 | |
Gao et al. | Intelligent crack damage detection system in shield tunnel using combination of retinanet and optimal adaptive selection | |
CN112927223A (zh) | 一种基于红外热成像仪的玻璃幕墙检测方法 | |
CN117036259A (zh) | 一种基于深度学习的金属板材表面缺陷检测方法 | |
Singh et al. | Segmentation technique for the detection of Micro cracks in solar cell using support vector machine | |
Sun et al. | Research on image segmentation and extraction algorithm for bicolor water level gauge | |
CN112734745B (zh) | 一种融合gis数据的无人机热红外影像供暖管道泄漏探测方法 | |
CN109299655A (zh) | 一种基于无人机的海上溢油在线快速识别方法 | |
Li et al. | Graph network refining for pavement crack detection based on multiscale curvilinear structure filter | |
CN112329572B (zh) | 一种基于边框和闪光点的快速静态活体检测方法及装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17888959 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 201905909 Country of ref document: GB Kind code of ref document: A Free format text: PCT FILING DATE = 20171230 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 17888959 Country of ref document: EP Kind code of ref document: A1 |