CN109269479A - Ancient building safety monitoring method based on spatial digitizer acquisition image - Google Patents
Ancient building safety monitoring method based on spatial digitizer acquisition image Download PDFInfo
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- CN109269479A CN109269479A CN201811023878.1A CN201811023878A CN109269479A CN 109269479 A CN109269479 A CN 109269479A CN 201811023878 A CN201811023878 A CN 201811023878A CN 109269479 A CN109269479 A CN 109269479A
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- image
- ancient building
- acquisition
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- spatial digitizer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
- G01C11/04—Interpretation of pictures
- G01C11/06—Interpretation of pictures by comparison of two or more pictures of the same area
- G01C11/12—Interpretation of pictures by comparison of two or more pictures of the same area the pictures being supported in the same relative position as when they were taken
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Alarm Systems (AREA)
Abstract
The present invention relates to ancient building monitoring protection method fields, are based especially on the ancient building safety monitoring method of spatial digitizer acquisition image.Steps of the method are: a) scanning website is laid and makes marks, as the reference point acquired later；B) the two phases above ancient building status image is acquired；C) image classification of acquisition is encoded；D) image is calculated using differential technique；E) image is calculated using ratio method；F) differential technique and ratio method testing result are judged, obtains optimizing detection result.The present invention acquires image by spatial digitizer, image classification is encoded, and judged and obtained a result by differential technique and ratio method, improves monitoring efficiency, reduce monitoring cost.
Description
Technical field
The present invention relates to ancient building monitoring protection method fields, are based especially on the ancient building of spatial digitizer acquisition image
Safety monitoring method.
Background technique
Ancient architecture is the art rarity of human civilization as special cultural information carrier, and protecting them is contemporary justice
The responsibility of diction is not allowed.However since war, natural calamity and modern industry and tourist industry bring pollute, many Large-scale Ancients
Building receives different degrees of deformation and failure, and Historic heritage conservation is faced with severe situation.In recent years, with meter
The relevant technologies subjects such as calculation machine, mapping, GIS-Geographic Information System (Geographical Information System, GIS) it is fast
Exhibition is hailed, the ancient building based on the technologies such as digital picture, close-range photogrammetry, virtual reality and three dimension laser scanning surreying
Digital management and guard method are increasingly becoming focus concerned by people.
Three-D Laser Scanning technology can be under conditions of not damaging building, Quick Acquisition heritage buildings outer surface
Precise information.By being acquired to ancient building three-dimensional information, retain as historical archives, and can be used as the base of recovery and numbers show
Plinth data information.However, the image document of acquisition is often only used as archive data, use value plays not high.Do not utilize
The image of acquisition carries out safety monitoring.
Summary of the invention
The technical problem to be solved by the present invention is in order to solve the above-mentioned technical problems, the present invention provides one kind to be based on three
The ancient building safety monitoring method for tieing up scanner acquisition image acquires image by spatial digitizer, image classification is encoded, and
Judged and obtained a result by differential technique and ratio method, improved monitoring efficiency, reduce monitoring cost.
The technical solution adopted by the present invention to solve the technical problems is:
2, a kind of the step of ancient building safety monitoring method based on spatial digitizer acquisition image, the monitoring method are as follows:
A) scanning website is laid and makes marks, as the reference point acquired later；
B) the two phases above ancient building status image is acquired；
C) image classification of acquisition is encoded；
D) image is calculated using differential technique, i.e., subtracted each other the image pixel by pixel of two same areas, generate difference
Image changes to represent, mathematic(al) representation:
Dix, y=| ix, y (t2)-ix, y (t1) |
Ix, y refer to the pixel value of image xth row and y column, and t1 and t2 are for the first time respectively and second acquires image
Time；
E) image is calculated using ratio method, i.e., the image of two width same areas is subjected to respective pixel point value phase
It removes, obtains a ratio, formula is as follows:
Rix, y=ix, y (t1)/ix, y (t2)
Ix, y refer to the pixel value of image xth row and y column, and t1 and t2 are for the first time respectively and second acquires image
Time；
F) differential technique and ratio method testing result are judged, obtains optimizing detection result.
Specifically, in step d), detection Gu is calculated by input difference arithmetic formula using ENVI or ArcGIS software
Building variation.
Specifically, detection ancient architecture is calculated by input ratio algorithmic formula using ENVI or ArcGIS software in step e)
Build variation.
Specifically, the image of contrasting detection is the image of the same area of same website acquisition.
Specifically, the parameter setting of Image Acquisition is identical.
The beneficial effects of the present invention are: the present invention provides a kind of ancient building safety based on spatial digitizer acquisition image
Monitoring method acquires image by spatial digitizer, image classification is encoded, and is judged simultaneously by differential technique and ratio method
It obtains a result, improves monitoring efficiency, reduce monitoring cost.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is flow chart of the invention；
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.
Fig. 1 is flow chart of the invention.
S1, scanning website is laid and makes marks, as the reference point acquired later；
S2 acquires two phases or the above ancient building status image；
S3 encodes the image classification of acquisition；
S4 calculates image using differential technique, i.e., subtracts each other the image pixel by pixel of two same areas, and difference is generated
Image changes to represent, mathematic(al) representation:
Dix, y=| ix, y (t2)-ix, y (t1) |
Ix, y refer to the pixel value of image xth row and y column, and t1 and t2 are for the first time respectively and second acquires image
Time carries out numerical value using absolute value sign (| |) and takes just to guarantee that difference result is positive.It according to the actual situation, can be right
Dix, y do a threshold test and segmentation, and what it is greater than certain threshold value is considered as the region changed, are otherwise considered as not having
It changes.
S5 calculates image using ratio method, i.e., the image of two width same areas is carried out respective pixel point value phase
It removes, obtains a ratio, formula is as follows:
Rix, y=ix, y (t1)/ix, y (t2)
Ix, y refer to the pixel value of image xth row and y column, and t1 and t2 are for the first time respectively and second acquires image
Time.Judge whether corresponding ancient building region is changed according to ratio R ix, y, if the value of R and 1 difference are bigger,
Then think that corresponding region is changed, otherwise the value of R is equal to 1 or is not much different with 1, thinks that there is no variations.
S6 judges differential technique and ratio method testing result, obtains optimizing detection result.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (5)
1. a kind of ancient building safety monitoring method based on spatial digitizer acquisition image, which is characterized in that the monitoring method
Step are as follows:
A) scanning website is laid and makes marks, as the reference point acquired later；
B) the two phases above ancient building status image is acquired；
C) image classification of acquisition is encoded；
D) image is calculated using differential technique, i.e., subtracted each other the image pixel by pixel of two same areas, generate error image
Change to represent, mathematic(al) representation:
Dix, y=| ix, y (t2)-ix, y (t1) |
Ix, y refer to that the pixel value of image xth row and y column, t1 and t2 are when acquiring image for the first time and for the second time respectively
Between；
E) image is calculated using ratio method, i.e., the image of two width same areas is subjected to respective pixel point value and be divided by, is obtained
To a ratio, formula is as follows:
Rix, y=ix, y (t1)/ix, y (t2)
Ix, y refer to that the pixel value of image xth row and y column, t1 and t2 are when acquiring image for the first time and for the second time respectively
Between；
F) differential technique and ratio method testing result are judged, obtains optimizing detection result.
2. the ancient building safety monitoring method according to claim 1 based on spatial digitizer acquisition image, feature exist
In: in step d), detection ancient building is calculated by input difference arithmetic formula using ENVI or ArcGIS software and is changed.
3. the ancient building safety monitoring method according to claim 1 based on spatial digitizer acquisition image, feature exist
In: detection ancient building is calculated by input ratio algorithmic formula using ENVI or ArcGIS software in step e) and is changed.
4. the ancient building safety monitoring method according to claim 1 based on spatial digitizer acquisition image, feature exist
In: the image of contrasting detection is the image of the same area of same website acquisition.
5. the ancient building safety monitoring method according to claim 1 based on spatial digitizer acquisition image, feature exist
In: the parameter setting of Image Acquisition is identical.
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| CN201811023878.1A CN109269479A (en) | 2018-09-04 | 2018-09-04 | Ancient building safety monitoring method based on spatial digitizer acquisition image |
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| CN201811023878.1A CN109269479A (en) | 2018-09-04 | 2018-09-04 | Ancient building safety monitoring method based on spatial digitizer acquisition image |
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| CN201811023878.1A Pending CN109269479A (en) | 2018-09-04 | 2018-09-04 | Ancient building safety monitoring method based on spatial digitizer acquisition image |
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| CN86105861A (en) * | 1985-07-12 | 1987-07-15 | 国际地区测量和地球科学学院 | Extract the equipment of 3-D quantitative information from least one group of stereoscopic photograph centering |
| CN103821126A (en) * | 2014-02-12 | 2014-05-28 | 广州市恒盛建设工程有限公司 | Method for monitoring three-dimensional deformation of foundation pit |
| CN104217199A (en) * | 2014-09-15 | 2014-12-17 | 武汉大学 | Statistical method of semi-porosity based on close-range photogrammetric technology |
| JP2016118502A (en) * | 2014-12-22 | 2016-06-30 | 日本電信電話株式会社 | Point group analysis processor, method, and program |
| JP2017058252A (en) * | 2015-09-16 | 2017-03-23 | スリーエム イノベイティブ プロパティズ カンパニー | Deformation amount measuring method, program, server device, and system |
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