CN109900366B - Method and device for detecting abnormal temperature point of lightning arrester - Google Patents
Method and device for detecting abnormal temperature point of lightning arrester Download PDFInfo
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Abstract
The invention discloses a method for detecting abnormal points of the temperature of a lightning arrester, which comprises the following steps: acquiring an arrester infrared image marked with a detection area, and acquiring temperature values corresponding to all pixel points in the detection area in the arrester infrared image to form a temperature value set; traversing the temperature value set, and determining pixel points corresponding to temperature values higher than the average value in the temperature value set as target pixel points to obtain a target pixel point set; dividing target pixel points in a target pixel point set into a plurality of pixel groups according to Euclidean distances between different target pixel points; and marking the area covered by the pixel group with the number of the pixel points exceeding the preset threshold as a temperature abnormal point. The method realizes the automatic detection of the abnormal temperature point of the lightning arrester, improves the detection efficiency and the accuracy rate, and can avoid the occurrence of electric power accidents to a certain extent. Correspondingly, the device, the equipment and the readable storage medium for detecting the abnormal temperature point of the lightning arrester also have the technical effects.
Description
Technical Field
The invention relates to the technical field of infrared image processing, in particular to a method, a device, equipment and a readable storage medium for detecting abnormal points of temperature of a lightning arrester.
Background
Along with the wide application of infrared equipment in lightning arrester live detection, power supply companies accumulate a large number of operation and maintenance infrared images of lightning arresters. For the infrared images of the lightning arresters, the infrared images are generally classified and screened manually to detect the infrared images of the lightning arresters with abnormal temperature points.
And because the quantity of arrester is more, corresponding infrared image is also more, consequently the task volume of detection operation is great. Moreover, the efficiency of manual detection is slow, and mistakes and omissions are inevitable. If the abnormal lightning arrester is not detected in time, the power accident is likely to be caused. Therefore, the prior art has the defects of low efficiency and difficulty in ensuring accuracy.
Therefore, how to improve the detection efficiency and accuracy of the abnormal temperature point of the lightning arrester is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a method, a device, equipment and a readable storage medium for detecting an abnormal temperature point of an arrester so as to improve the detection efficiency and accuracy of the abnormal temperature point of the arrester.
In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:
a method of detecting a temperature anomaly point of a lightning arrester, comprising:
acquiring an arrester infrared image marked with a detection area, and acquiring temperature values corresponding to all pixel points in the detection area in the arrester infrared image to form a temperature value set;
traversing the temperature value set, and determining pixel points corresponding to temperature values higher than the average value in the temperature value set as target pixel points to obtain a target pixel point set; wherein the average value is an average value of all temperature values in the set of temperature values;
dividing target pixel points in the target pixel point set into a plurality of pixel groups according to Euclidean distances between different target pixel points in the target pixel point set;
and respectively calculating the number of pixel points in each pixel group, and marking the area covered by the pixel group with the number of the pixel points exceeding a preset threshold as a temperature abnormal point.
Wherein, still include:
and marking the area covered by the pixel group of which the number of the pixel points does not exceed the preset threshold value as a suspicious temperature abnormal point.
Wherein, the determining the pixel point corresponding to the temperature value higher than the average value in the temperature value set as the target pixel point includes:
determining the temperature values higher than the average value in the temperature value set as effective temperature values to obtain an effective temperature value set;
traversing the effective temperature value set, and determining pixel points corresponding to effective temperature values higher than an effective average value in the effective temperature value set as the target pixel points; wherein the effective average value is an average value of all effective temperature values in the set of effective temperature values.
The dividing, according to euclidean distances between different target pixel points in the target pixel point set, the target pixel points in the target pixel point set into a plurality of pixel groups includes:
selecting any one target pixel point from the target pixel point set as a central point, and dividing the target pixel point with Euclidean distance from the central point as a preset numerical value and the central point into target pixel groups;
taking each target pixel point except the central point in the target pixel group as the central point, and executing the step of dividing the target pixel point with the Euclidean distance from the central point as a preset numerical value and the central point into the target pixel group until no target pixel point with the Euclidean distance from the target pixel point in the target pixel group as the numerical value exists in the target pixel point set;
deleting the target pixel points divided into the target pixel group from the target pixel point set, and executing the step of selecting any one target pixel point from the target pixel point set as a central point until no target pixel point which is not divided exists in the target pixel point set.
After the area covered by the pixel group with the number of the pixel points exceeding the preset threshold is marked as the temperature abnormal point, the method further comprises the following steps:
and marking the abnormal temperature points in the infrared image of the lightning arrester to obtain an infrared marked image.
After the infrared annotation image is obtained, the method further comprises the following steps:
and correspondingly storing the infrared annotation image and the identification information of the lightning arrester in the infrared annotation image to a preset target file.
After the infrared annotation image and the identification information of the lightning arrester in the infrared annotation image are correspondingly stored to a preset target file, the method further comprises the following steps:
and displaying the target file through a preset visualization tool.
An apparatus for detecting a temperature anomaly point of a lightning arrester, comprising:
the acquisition module is used for acquiring the infrared image of the lightning arrester marked with the detection area, acquiring temperature values corresponding to all pixel points in the detection area in the infrared image of the lightning arrester, and forming a temperature value set;
the calculation module is used for traversing the temperature value set, and determining pixel points corresponding to the temperature values higher than the average value in the temperature value set as target pixel points to obtain a target pixel point set; wherein the average value is an average value of all temperature values in the set of temperature values;
the dividing module is used for dividing the target pixel points in the target pixel point set into a plurality of pixel groups according to Euclidean distances between different target pixel points in the target pixel point set;
and the marking module is used for respectively calculating the number of pixel points in each pixel group and marking the area covered by the pixel group with the number of the pixel points exceeding a preset threshold as a temperature abnormal point.
An apparatus for detecting a temperature anomaly point of a lightning arrester, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method for detecting a temperature anomaly point of an arrester according to any one of the above when executing the computer program.
A readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of detecting a temperature anomaly point of an arrester according to any one of the preceding claims.
According to the scheme, the method for detecting the abnormal temperature point of the lightning arrester, provided by the embodiment of the invention, comprises the following steps: acquiring an arrester infrared image marked with a detection area, and acquiring temperature values corresponding to all pixel points in the detection area in the arrester infrared image to form a temperature value set; traversing the temperature value set, and determining pixel points corresponding to temperature values higher than the average value in the temperature value set as target pixel points to obtain a target pixel point set; the average value is the average value of all temperature values in the temperature value set; dividing target pixel points in the target pixel point set into a plurality of pixel groups according to Euclidean distances between different target pixel points in the target pixel point set; and respectively calculating the number of pixel points in each pixel group, and marking the area covered by the pixel group with the number of the pixel points exceeding a preset threshold as a temperature abnormal point.
Therefore, the method can automatically calculate the pixel points with abnormal temperature in the detection area based on the infrared image of the lightning arrester marked with the detection area, thereby realizing the automatic detection of the abnormal points of the lightning arrester temperature, replacing the manual detection process, and improving the detection efficiency and accuracy. Wherein, owing to improved detection efficiency, so can in time detect out and have unusual arrester, can avoid the emergence of electric power accident to a certain extent.
Accordingly, the device, the equipment and the readable storage medium for detecting the abnormal temperature point of the lightning arrester provided by the embodiment of the invention also have the technical effects.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for detecting abnormal temperature points of an arrester according to an embodiment of the present invention;
fig. 2 is a flowchart of another method for detecting abnormal temperature points of an arrester according to an embodiment of the present invention;
fig. 3 is a schematic view of an apparatus for detecting abnormal temperature points of an arrester according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an apparatus for detecting abnormal temperature points of an arrester according to an embodiment of the present invention;
fig. 5 is a schematic view of an infrared image of a lightning arrester marked with a detection area according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a method, a device and equipment for detecting an abnormal temperature point of an arrester and a readable storage medium, which are used for improving the detection efficiency and accuracy of the abnormal temperature point of the arrester.
Referring to fig. 1, a method for detecting an abnormal temperature point of an arrester according to an embodiment of the present invention includes:
s101, acquiring an arrester infrared image marked with a detection area, and acquiring temperature values corresponding to all pixel points in the detection area in the arrester infrared image to form a temperature value set;
it should be noted that, the method for acquiring the infrared image of the lightning arrester may be as follows: the method comprises the steps of obtaining the lightning arrester infrared image from a database through a software interface, obtaining the lightning arrester infrared image from a storage medium through a hardware interface, or receiving the lightning arrester infrared image sent by an image sending end through a network line.
Referring to fig. 5, an infrared image of the lightning arrester marked with a detection area is shown, and a rectangular frame in fig. 5 represents the detection area. It should be noted that, every pixel in the detection area all corresponds a temperature value, and the higher the temperature value, the higher the probability that the arrester has the anomaly is.
S102, traversing the temperature value set, and determining pixel points corresponding to temperature values higher than the average value in the temperature value set as target pixel points to obtain a target pixel point set;
specifically, a traversal algorithm may be used to traverse the set of temperature values. The average value is the average value of all temperature values in the set of temperature values.
S103, dividing target pixel points in the target pixel point set into a plurality of pixel groups according to Euclidean distances between different target pixel points in the target pixel point set;
the euclidean distance in this embodiment is the distance between two target pixel points.
And S104, respectively calculating the number of pixel points in each pixel group, and marking the area covered by the pixel group with the number of the pixel points exceeding a preset threshold value as a temperature abnormal point.
Wherein, still include: and marking the area covered by the pixel group of which the number of the pixel points does not exceed the preset threshold value as a suspicious temperature abnormal point. It should be noted that after the infrared image of the lightning arrester is processed, distorted pixel points may exist therein, and therefore, the area covered by the pixel group whose number of pixel points does not exceed the preset threshold value is marked as a suspicious temperature abnormal point. That is, the suspected temperature anomaly may be a temperature anomaly or may be due to distortion of the lightning arrester infrared image.
Therefore, the method for detecting the abnormal temperature point of the lightning arrester can automatically calculate the pixel point with the abnormal temperature in the detection area based on the infrared image of the lightning arrester marked with the detection area, so that the automatic detection of the abnormal temperature point of the lightning arrester is realized, the manual detection process is replaced, and the detection efficiency and the accuracy are improved. Wherein, owing to improved detection efficiency, so can in time detect out and have unusual arrester, can avoid the emergence of electric power accident to a certain extent.
The embodiment of the invention discloses another method for detecting the abnormal temperature point of the lightning arrester, and compared with the previous embodiment, the embodiment further explains and optimizes the technical scheme.
Referring to fig. 2, another method for detecting an abnormal temperature point of an arrester according to an embodiment of the present invention includes:
s201, acquiring an arrester infrared image marked with a detection area, and acquiring temperature values corresponding to all pixel points in the detection area in the arrester infrared image to form a temperature value set;
s202, traversing the temperature value set, and determining the temperature value higher than the average value in the temperature value set as an effective temperature value to obtain the effective temperature value set;
wherein, the average value is the average value of all temperature values in the temperature value set;
s203, traversing the effective temperature value set, and determining pixel points corresponding to effective temperature values higher than the effective average value in the effective temperature value set as target pixel points;
wherein the effective average value is an average value of all effective temperature values in the effective temperature value set;
s204, dividing target pixel points in the target pixel point set into a plurality of pixel groups according to Euclidean distances between different target pixel points in the target pixel point set;
s205, calculating the number of pixel points in each pixel group respectively, and marking the area covered by the pixel group with the number of the pixel points exceeding a preset threshold as a temperature abnormal point.
In this embodiment, in order to screen out abnormal pixel points with higher temperature from the detection area and reduce the calculation complexity, the temperature values corresponding to the pixel points are subjected to secondary subtraction, and the number of target pixel points in the obtained target pixel point set is reduced to a certain extent.
If the temperature value set includes 3 temperature values, which are 80 ℃, 98 ℃, 100 ℃ and 110 ℃, respectively, the average value is: and deleting 80 ℃ at 97 ℃, and taking the residual pixels corresponding to the 98 ℃, 100 ℃ and 110 ℃ respectively as target pixels to form a target pixel set. If secondary deletion is needed, taking the temperatures of 98 ℃, 100 ℃ and 110 ℃ as effective temperature values, and calculating to obtain an effective average value of 102.67 ℃, and deleting the pixels corresponding to the temperatures of 98 ℃ and 100 ℃ and 110 ℃ to obtain target pixels.
Therefore, the embodiment provides another method for detecting the abnormal temperature point of the lightning arrester, and the method can automatically calculate the pixel point with the abnormal temperature in the detection area based on the infrared image of the lightning arrester marked with the detection area, so that the automatic detection of the abnormal temperature point of the lightning arrester is realized, the manual detection process is replaced, and the detection efficiency and the accuracy are improved. Wherein, owing to improved detection efficiency, so can in time detect out and have unusual arrester, can avoid the emergence of electric power accident to a certain extent.
Based on any of the above embodiments, it should be noted that, according to the euclidean distance between different target pixel points in the target pixel point set, dividing the target pixel points in the target pixel point set into a plurality of pixel groups includes:
selecting one target pixel point from the target pixel point set as a central point, and dividing the target pixel point and the central point of which the Euclidean distance from the central point is a preset numerical value into target pixel groups;
taking each target pixel point except the central point in the target pixel group as the central point, and executing the step of dividing the target pixel point with Euclidean distance from the central point as a preset numerical value and the central point into the target pixel group until no target pixel point with the Euclidean distance from the target pixel point in the target pixel group as a numerical value exists in the target pixel point set;
and deleting the target pixel points divided into the target pixel group from the target pixel point set, and executing the step of selecting any one target pixel point from the target pixel point set as a central point until no target pixel point which is not divided exists in the target pixel point set.
The dividing process specifically comprises the following steps:
if 4 target pixel points exist: A. b, C, D, and the distances between A and B, C, D are 1, 5, and the distances between C and B, D are: 2. 2, the distance between B and D is 5; and the preset value is 1, then a target pixel point a is selected, the target pixel point with the distance of 1 from a and a are divided into a pixel group, and then the pixel group 1: A. b, C are provided. All regard as the central point with B and C, but do not have the target pixel point that accords with the condition, consequently delete A, B, C from the target pixel point set, only remain D in the target pixel point set, and do not have the target pixel point that accords with the condition, so the division is ended, can reach two pixel groups, is respectively: pixel group 1: A. b, C, respectively; pixel group 2: D.
based on any of the above embodiments, it should be noted that after the area covered by the pixel group whose number of pixels exceeds the preset threshold is marked as the temperature anomaly point, the method further includes: and marking temperature abnormal points in the lightning arrester infrared image to obtain an infrared marking image.
Wherein, after obtaining the infrared annotation image, still include: and correspondingly storing the infrared annotation image and the identification information of the lightning arrester in the infrared annotation image to a preset target file.
Wherein, after the identification information correspondence storage to predetermined target file with the arrester in infrared annotation image and the infrared annotation image, still include: and displaying the target file through a preset visualization tool.
The lightning arrester can be known according to the identification information of the lightning arrester, so that the infrared annotation image and the identification information of the lightning arrester in the infrared annotation image are correspondingly stored in a preset target file, and operation and maintenance technicians can know which lightning arrester has which temperature abnormal point by searching the target file. The corresponding storage is to store the information in a one-to-one corresponding relationship, for example, a table with a specified format is correspondingly stored, and the information is recorded in a uniform format, so as to facilitate subsequent management and analysis.
Based on any of the above embodiments, it should be noted that the infrared image of the lightning arrester marked with the detection area can be obtained through a deep learning model. Namely: inputting the lightning arrester infrared image collected by the infrared terminal into the deep learning model, outputting the position information (namely the detection area) of the lightning arrester in the infrared image, and marking the position information in the original infrared image to obtain the lightning arrester marked with the detection area. The deep learning model can be obtained through SSD algorithm training. The deep learning model training process can refer to the prior art (convolutional neural network model and the like), and the training framework can adopt Tensorflow.
In the following, a device for detecting an abnormal temperature point of an arrester according to an embodiment of the present invention is described, and the device for detecting an abnormal temperature point of an arrester described below and the method for detecting an abnormal temperature point of an arrester described above may be referred to each other.
Referring to fig. 3, an apparatus for detecting an abnormal temperature point of an arrester according to an embodiment of the present invention includes:
the acquisition module 301 is configured to acquire an infrared image of the lightning arrester, which is marked with a detection area, and acquire temperature values corresponding to all pixel points in the detection area in the infrared image of the lightning arrester to form a temperature value set;
the calculating module 302 is configured to traverse the temperature value set, determine a pixel point corresponding to a temperature value higher than the average value in the temperature value set as a target pixel point, and obtain a target pixel point set; wherein, the average value is the average value of all temperature values in the temperature value set;
the dividing module 303 is configured to divide the target pixel points in the target pixel point set into a plurality of pixel groups according to euclidean distances between different target pixel points in the target pixel point set;
the marking module 304 is configured to calculate the number of pixels in each pixel group, and mark an area covered by a pixel group whose number of pixels exceeds a preset threshold as a temperature anomaly point.
Wherein, the calculation module includes:
the determining unit is used for determining the temperature values higher than the average value in the temperature value set as effective temperature values to obtain an effective temperature value set;
the calculation unit is used for traversing the effective temperature value set and determining pixel points corresponding to effective temperature values higher than the effective average value in the effective temperature value set as target pixel points; wherein the effective average value is an average value of all effective temperature values in the effective temperature value set.
Wherein, the dividing unit is specifically configured to:
selecting one target pixel point from the target pixel point set as a central point, and dividing the target pixel point and the central point of which the Euclidean distance from the central point is a preset numerical value into target pixel groups; taking each target pixel point except the central point in the target pixel group as the central point, and executing the step of dividing the target pixel point with Euclidean distance from the central point as a preset numerical value and the central point into the target pixel group until no target pixel point with the Euclidean distance from the target pixel point in the target pixel group as a numerical value exists in the target pixel point set; and deleting the target pixel points divided into the target pixel group from the target pixel point set, and executing the step of selecting any one target pixel point from the target pixel point set as a central point until no target pixel point which is not divided exists in the target pixel point set.
Wherein, still include:
and the marking module is used for marking temperature abnormal points in the infrared image of the lightning arrester to obtain the infrared marking image.
Wherein, still include:
and the storage module is used for correspondingly storing the infrared annotation image and the identification information of the lightning arrester in the infrared annotation image to a preset target file.
Wherein, still include:
and the display module is used for displaying the target file through a preset visual tool.
Wherein, still include:
and the suspicious temperature abnormal point marking module is used for marking the area covered by the pixel group of which the number of the pixel points does not exceed the preset threshold value as the suspicious temperature abnormal point.
It can be seen that this embodiment provides a device for detecting lightning arrester temperature anomaly point, includes: the device comprises an acquisition module, a calculation module, a division module and a marking module. Firstly, an acquisition module acquires an arrester infrared image marked with a detection area, and acquires temperature values corresponding to all pixel points in the detection area in the arrester infrared image to form a temperature value set; then, the calculation module traverses the temperature value set, and determines pixel points corresponding to temperature values higher than the average value in the temperature value set as target pixel points to obtain a target pixel point set; the average value is the average value of all temperature values in the temperature value set; the dividing module divides the target pixel points in the target pixel point set into a plurality of pixel groups according to Euclidean distances between different target pixel points in the target pixel point set; and finally, the marking module respectively calculates the number of pixel points in each pixel group and marks the area covered by the pixel group with the number of the pixel points exceeding a preset threshold as a temperature abnormal point. Therefore, all the modules are in work and cooperation and each takes its own role, so that the automatic detection of abnormal temperature points of the lightning arrester is realized, and the detection efficiency and the accuracy are improved.
In the following, the device for detecting an abnormal temperature point of an arrester according to the embodiments of the present invention is introduced, and the device for detecting an abnormal temperature point of an arrester described below and the method and the apparatus for detecting an abnormal temperature point of an arrester described above may be referred to each other.
Referring to fig. 4, an apparatus for detecting an abnormal temperature point of an arrester according to an embodiment of the present invention includes:
a memory 401 for storing a computer program;
a processor 402 for implementing the steps of the method for detecting a temperature anomaly point of an arrester according to any of the above embodiments when executing the computer program.
In the following, a readable storage medium provided by an embodiment of the present invention is described, and a readable storage medium described below and a method, an apparatus, and a device for detecting an abnormal temperature point of an arrester described above may be referred to each other.
A readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of detecting a temperature anomaly point of a lightning arrester as described in any of the embodiments above.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A method of detecting a temperature anomaly point of a lightning arrester, comprising:
acquiring an arrester infrared image marked with a detection area, and acquiring temperature values corresponding to all pixel points in the detection area in the arrester infrared image to form a temperature value set;
traversing the temperature value set, and determining pixel points corresponding to temperature values higher than the average value in the temperature value set as target pixel points to obtain a target pixel point set; wherein the average value is an average value of all temperature values in the set of temperature values;
dividing target pixel points in the target pixel point set into a plurality of pixel groups according to Euclidean distances between different target pixel points in the target pixel point set;
respectively calculating the number of pixel points in each pixel group, and marking the area covered by the pixel group with the number of the pixel points exceeding a preset threshold as a temperature abnormal point;
the dividing, according to euclidean distances between different target pixel points in the target pixel point set, the target pixel points in the target pixel point set into a plurality of pixel groups includes:
selecting any one target pixel point from the target pixel point set as a central point, and dividing the target pixel point with Euclidean distance from the central point as a preset numerical value and the central point into target pixel groups;
taking each target pixel point except the central point in the target pixel group as the central point, and executing the step of dividing the target pixel point with the Euclidean distance from the central point as a preset numerical value and the central point into the target pixel group until no target pixel point with the Euclidean distance from the target pixel point in the target pixel group as the numerical value exists in the target pixel point set;
deleting the target pixel points divided into the target pixel group from the target pixel point set, and executing the step of selecting any one target pixel point from the target pixel point set as a central point until no target pixel point which is not divided exists in the target pixel point set.
2. The method of detecting a temperature anomaly point of a lightning arrester according to claim 1, further comprising:
and marking the area covered by the pixel group of which the number of the pixel points does not exceed the preset threshold value as a suspicious temperature abnormal point.
3. The method for detecting the abnormal temperature point of the lightning arrester according to claim 2, wherein the step of determining the pixel points corresponding to the temperature values higher than the average value in the temperature value set as target pixel points comprises the steps of:
determining the temperature values higher than the average value in the temperature value set as effective temperature values to obtain an effective temperature value set;
traversing the effective temperature value set, and determining pixel points corresponding to effective temperature values higher than an effective average value in the effective temperature value set as the target pixel points; wherein the effective average value is an average value of all effective temperature values in the set of effective temperature values.
4. The method for detecting the abnormal temperature point of the lightning arrester according to any one of claims 1 to 3, wherein after the area covered by the pixel group with the number of the pixels exceeding the preset threshold is marked as the abnormal temperature point, the method further comprises:
and marking the abnormal temperature points in the infrared image of the lightning arrester to obtain an infrared marked image.
5. The method for detecting the abnormal temperature point of the lightning arrester as claimed in claim 4, wherein after obtaining the infrared annotation image, the method further comprises:
and correspondingly storing the infrared annotation image and the identification information of the lightning arrester in the infrared annotation image to a preset target file.
6. The method for detecting the abnormal temperature point of the lightning arrester according to claim 5, wherein after the infrared annotation image and the identification information of the lightning arrester in the infrared annotation image are correspondingly stored in a preset target file, the method further comprises:
and displaying the target file through a preset visualization tool.
7. An apparatus for detecting a temperature anomaly point of a lightning arrester, comprising:
the acquisition module is used for acquiring the infrared image of the lightning arrester marked with the detection area, acquiring temperature values corresponding to all pixel points in the detection area in the infrared image of the lightning arrester, and forming a temperature value set;
the calculation module is used for traversing the temperature value set, and determining pixel points corresponding to the temperature values higher than the average value in the temperature value set as target pixel points to obtain a target pixel point set; wherein the average value is an average value of all temperature values in the set of temperature values;
the dividing module is used for dividing the target pixel points in the target pixel point set into a plurality of pixel groups according to Euclidean distances between different target pixel points in the target pixel point set;
the marking module is used for respectively calculating the number of pixel points in each pixel group and marking the area covered by the pixel group with the number of the pixel points exceeding a preset threshold as a temperature abnormal point;
wherein, the dividing module is specifically configured to:
selecting any one target pixel point from the target pixel point set as a central point, and dividing the target pixel point with Euclidean distance from the central point as a preset numerical value and the central point into target pixel groups;
taking each target pixel point except the central point in the target pixel group as the central point, and executing the step of dividing the target pixel point with the Euclidean distance from the central point as a preset numerical value and the central point into the target pixel group until no target pixel point with the Euclidean distance from the target pixel point in the target pixel group as the numerical value exists in the target pixel point set;
deleting the target pixel points divided into the target pixel group from the target pixel point set, and executing the step of selecting any one target pixel point from the target pixel point set as a central point until no target pixel point which is not divided exists in the target pixel point set.
8. An apparatus for detecting a temperature anomaly point of a lightning arrester, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method of detecting a temperature anomaly of a lightning arrester according to any one of claims 1-6 when executing said computer program.
9. A readable storage medium, characterized in that the readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of detecting a temperature anomaly of a lightning arrester according to any one of claims 1-6.
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| CN111044149A (en) * | 2019-12-19 | 2020-04-21 | 国网重庆市电力公司电力科学研究院 | Method and device for detecting temperature abnormal point of voltage transformer and readable storage medium |
| CN111366602A (en) * | 2020-03-19 | 2020-07-03 | 三一筑工科技有限公司 | Method, device and system for detecting compactness of concrete in prefabricated cavity wall |
| CN111680567B (en) * | 2020-05-12 | 2023-08-29 | 深圳数联天下智能科技有限公司 | Living body detection method, living body detection device, computer equipment and storage medium |
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| CN113610830B (en) * | 2021-08-18 | 2023-12-29 | 常州领创电气科技有限公司 | Detection system and method for lightning arrester |
| CN114119518A (en) * | 2021-11-16 | 2022-03-01 | 国网重庆市电力公司电力科学研究院 | Method and system for detecting temperature abnormal point in infrared image of current transformer |
| CN114049336B (en) * | 2021-11-18 | 2024-06-14 | 国网重庆市电力公司电力科学研究院 | GIS sleeve temperature anomaly detection method, device, equipment and readable storage medium |
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