CN118067012B - Cultural relic crack monitoring system based on image processing - Google Patents
Cultural relic crack monitoring system based on image processing Download PDFInfo
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- CN118067012B CN118067012B CN202410188444.6A CN202410188444A CN118067012B CN 118067012 B CN118067012 B CN 118067012B CN 202410188444 A CN202410188444 A CN 202410188444A CN 118067012 B CN118067012 B CN 118067012B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 40
- 238000012545 processing Methods 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000007405 data analysis Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims description 43
- 238000007789 sealing Methods 0.000 claims description 43
- 239000000835 fiber Substances 0.000 claims description 32
- 230000008859 change Effects 0.000 claims description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
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- 239000012466 permeate Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000003384 imaging method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
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- 238000005516 engineering process Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
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- 238000010521 absorption reaction Methods 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003708 edge detection Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
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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
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1417—2D bar codes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1439—Methods for optical code recognition including a method step for retrieval of the optical code
- G06K7/1443—Methods for optical code recognition including a method step for retrieval of the optical code locating of the code in an image
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- Computer Vision & Pattern Recognition (AREA)
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention relates to an image processing-based cultural relic crack monitoring system in the field of image data processing, which comprises an optical camera, wherein the optical camera is in signal connection with an FTP server, the FTP server is in signal connection with a body detection system application server, the system application of the body detection system application server comprises system management, image processing and data analysis, the camera comprises a shooting part, the shooting part comprises a light magnetic insulation spherical shell, a shooting lens and a counterweight part are fixedly connected on the light magnetic insulation spherical shell, and a transmission line is fixedly connected between the shooting lens and the counterweight part.
Description
Technical Field
The invention relates to a cultural relic crack monitoring system based on image processing, in particular to a cultural relic crack monitoring system based on image processing, which is applied to the field of image data processing.
Background
The monitoring to the crack change of the cultural relic body mainly adopts contact type monitoring technologies such as a resistance strain gauge, a displacement sensor and the like, and the monitoring technologies can cause damage to the cultural relic body to different degrees, so that the monitoring technologies have a certain market ratio.
The contact type monitoring mode mostly adopts a resistance strain gauge, when the tested object is stressed to deform along the direction of the resistance wire according to the strain effect of the metal conductor, the resistance wire deforms along with the deformation, so that the resistance value of the resistance wire also changes, the data acquisition instrument can measure the change of the resistance value of the strain gauge according to the sensitivity coefficient of the strain gauge and convert the change into the change value of a crack, and the monitoring mode has great limitation, and is inapplicable in monitoring application scenes such as the surface of a mural and the surface of an earthen site because the adhesion and the treatment are required to be carried out on the surface of a body.
In the prior art, body fracture change monitoring is performed based on an image processing technology, mainly digital images acquired on site are processed, the digital images are usually formed by a rectangular pixel matrix, one frame of image can be described as N multiplied by M bit pixels, N and M are the number of pixel points, the image processing is actually the digital processing of pixel values in the pixel matrix, the on-site images are acquired through high-definition imaging equipment, the characteristic area outline of an original image is obtained through binarization and edge detection methods, the pixel coordinates of the central point of the area are calculated through positioning, segmentation and decoding, and finally, the difference value of different pixel points is converted into an actual distance according to a scale, so that the change value of the fracture is obtained.
Content of the application
Aiming at the prior art, the invention aims to solve the technical problem that the prior contact type monitoring method for the cultural relics is easy to cause secondary irreversible damage to the cultural relics.
In order to solve the problems, the invention provides an image processing-based cultural relic crack monitoring system, which comprises an optical camera, wherein the optical camera is connected with an FTP server in a signal mode, the FTP server is connected with an ontology detection system application server in a signal mode, and the system application of the ontology detection system application server comprises system management, image processing and data analysis;
The camera includes the installation cover and the portion of shooing of mutual matching, shooting portion places in the installation cover, the lower extreme fixedly connected with support column of installation cover, the opening part fixedly connected with of installation cover and self assorted sealed lid, the upper end of shooting portion runs through sealed lid and extends to sealed outside of lid, the installation cover includes the cover body, the cover intussuseption is filled with high density liquid, shooting portion floats in the surface of high density liquid, shooting portion includes light absolute ball shell, fixedly connected with shooting lens on the light absolute ball shell, fixedly connected with counter weight portion in the light absolute ball shell, counter weight portion is located the bottom of light absolute ball shell, and shooting lens is located the first half of light absolute ball shell, fixedly connected with transmission line between shooting lens and the counter weight portion.
Compared with the traditional monitoring method, the non-contact monitoring method provided in the cultural relic crack monitoring system based on image processing has the advantages that excessive contact with the surface of the cultural relic body is not needed, and particularly large-area pasting, cleaning, dampproof treatment and other works are not needed, so that the cultural relic body is protected from being damaged to the greatest extent, the monitoring method is convenient to use in various special application environments, and industrial application is enriched.
As a further improvement of the application, the sealing cover comprises a cover body, a sealing ring is connected between the cover body and the cover body, and the sealing ring is fixedly connected with the cover body, so that the sealing effect between the mounting cover and the sealing cover is improved, and the high-density liquid is not easy to leak.
As a further improvement of the application, the upper end of the cover body is fixedly connected with a transparent sealing film matched with the shooting part, the transparent sealing film is made of transparent high-elasticity materials, the transparent sealing film can play a role in sealing in the transportation and the transportation of the mounting sleeve, the sealing cover and the shooting part, so that high-density liquid is not easy to leak, the transportation and the storage are facilitated, the practicability of the application is improved, after the supporting column is fixedly arranged, the shooting part floats upwards and is fixed, the transparent sealing film can be torn off, the influence of refraction generated by light penetrating the transparent sealing film on distance measurement is avoided, and when the mounting sleeve, the sealing cover and the shooting part are required to be recycled, the transparent sealing film can be attached again, and then the transportation is carried out.
As a further improvement of the application, the lower end of the light-weight magnetic insulation spherical shell is fixedly connected with the driven iron, the groove bottom plate of the sleeve body is fixedly connected with the directional magnet matched with the driven iron, the directional magnet and the driven iron are of non-central symmetrical structures, and after the support column is collided by external force and inclined, the whole shooting part can conduct posture fine adjustment under the action of the counterweight part, so that the shooting lens always faces the monitored object, and the adsorption effect between the directional magnet and the driven iron ensures that the whole shooting part is not easy to generate a large-scale rotation angle and the normal monitoring of the shooting part is not easy to be influenced.
As an improvement of the application, the cleaning ring is fixedly connected to the inner wall of the sleeve body and is positioned at the lower side of the sealing cover, the cleaning ring is in contact with the sealing cover, the cleaning ring comprises the fixing ring, the inner wall of the fixing ring is fixedly connected with a plurality of cleaning fibers, the cleaning fibers are all in a three-dimensional spiral shape, two adjacent cleaning fibers are wound together to form a three-dimensional space three-dimensional structure, and the surface of the shooting part can be cleaned, so that the shooting lens is not easy to be stained with high-density liquid and the normal work of the shooting part is not easy to be influenced.
As an improvement supplement of the application, the cleaning fiber is of a hollow structure, the inner wall of the cleaning fiber is coated with a hydrophilic high-density liquid coating, and the surface of the cleaning fiber is cut with a plurality of capillary cracks, so that the cleaned high-density liquid can easily infiltrate into the cleaning fiber and is enriched in the cleaning fiber, after the cleaning fiber is enriched to a sufficient amount, the self structure collapses and falls down, the high-density liquid flows out of the cleaning fiber under the action of self gravity, and then the cleaning fiber is restored to the original state, and the high-density liquid cleaned from the surface of the photographing part is transferred back into the sleeve body, so that the floating action of the photographing part is not easily influenced.
As a further improvement of the application, the working method of the cultural relic crack monitoring system based on image processing mainly comprises the following steps:
S1, basic calibration, namely performing calibration operation on a monitored part at the initial stage of system operation, wherein the calibration operation comprises the steps of fixing the position of an optical camera, fixing the focal length, determining the size of an image, determining the horizontal position and setting a marking point, and the marking point is formed by two-dimensional codes: the midpoint of the connecting line of the first frame and the third frame of each two-dimensional code icon is the center point of the two-dimensional code icon, and the pixel difference value between the two-dimensional code icons is obtained by calculating the distance between the center points of the two-dimensional code icons;
S2, image acquisition, wherein the optical camera continuously records image information in real time and uploads the image information to an application server of the body detection system through the FTP server;
S3, image processing, namely processing the image information uploaded to the body by the body detection system application server, identifying the mark points on the image, and further converting the pixel difference value along the connecting line direction of the two-dimensional code center points according to the distance between the two-dimensional code center points measured in advance and the pixel difference value along the connecting line direction of the two-dimensional code center points of the crack width on the image to obtain the actual width of the crack:
The actual width of the crack/the pixel difference value of the crack = the distance between two-dimensional code center points/the pixel difference value between two-dimensional code icons;
S4, displaying the fracture change data on a coordinate system by using the body detection system application server according to a time axis as a sequence, wherein the fracture change data comprises a fracture length change chart and a sudden change trend chart, the fracture length change chart mainly represents a fracture change process, and the sudden change trend chart mainly represents a change amplitude in the process.
In conclusion, the non-contact type monitoring method provided by the application has the advantages that compared with the traditional monitoring method, the non-contact type monitoring method does not need to be in excessive contact with the surface of the cultural relic body, particularly does not need to carry out large-area pasting, cleaning, dampproof treatment and other works, protects the cultural relic body to the greatest extent from being damaged, is convenient to use in various special application environments, and enriches industrial application.
Drawings
FIG. 1 is a schematic diagram of a cultural relic crack monitoring system according to a first embodiment of the present application;
FIG. 2 is a diagram of a method of operation of a cultural relic crack monitoring system according to a first embodiment of the present application;
Fig. 3 is a schematic structural view of an optical camera according to a first embodiment of the present application;
Fig. 4 is a front cross-sectional view of an optical camera according to a first embodiment of the present application;
FIG. 5 is a schematic diagram of the structure shown at A in FIG. 4;
FIG. 6 is a schematic diagram of the structure at B in FIG. 4;
FIG. 7 is a top view of a mounting sleeve according to a first embodiment of the present application;
FIG. 8 is a schematic view of a cleaning ring according to a second embodiment of the present application;
FIG. 9 is a schematic view of a cleaning fiber according to a second embodiment of the present application;
fig. 10 is a schematic diagram showing a change in the imaging section according to the first embodiment of the present application when the imaging section is tilted forward and backward;
FIG. 11 is a schematic view of photographing accuracy when an optical camera is facing a monitored subject;
FIG. 12 is a diagram showing the photographing accuracy of an optical camera at a tilt angle of 30℃with respect to a monitored subject;
FIG. 13 is a schematic diagram of a first embodiment of the present application for marking with two-dimensional code sets.
The reference numerals in the figures illustrate:
1 supporting column, 2 mounting sleeve, 201 sleeve body, 202 directional magnet, 3 sealing cover, 301 cover body, 302 sealing ring, 4 shooting part, 401 light magnetic insulation spherical shell, 402 shooting lens, 403 transmission line, 404 counterweight part, 405 driven iron, 5 transparent sealing film, 6 cleaning ring, 601 fixing ring, 602 cleaning fiber, 603 capillary crack.
Detailed Description
Two embodiments of the present application will be described in detail with reference to the accompanying drawings.
First embodiment:
Fig. 1 shows a cultural relic crack monitoring system, which comprises an optical camera, wherein the optical camera is in signal connection with an FTP server, the FTP server is in signal connection with an application server of an ontology detection system, the application server of the ontology detection system comprises system management, image processing and data analysis, data shot by the optical camera can be uploaded to the application server of the ontology detection system through the FTP server and processed and analyzed by the application server of the ontology detection system, and meanwhile, the application server of the ontology detection system can be also in signal connection with other service systems through a self structure to acquire related data resources of other service systems and operate other system services, including but not limited to: the warning system and the maintenance system are well known to the skilled person in the art, so the warning system and the maintenance system are not disclosed in the application in detail, and the skilled person can carry out reasonable design according to the prior art, so the warning system and the maintenance system are not disclosed in detail in the application;
Referring to fig. 3-7, the camera includes a mounting sleeve 2 and a photographing part 4 which are matched with each other, the photographing part 4 is placed in the mounting sleeve 2, the lower end of the mounting sleeve 2 is fixedly connected with a support column 1, the opening of the mounting sleeve 2 is fixedly connected with a sealing cover 3 matched with the mounting sleeve 2, the upper end of the photographing part 4 penetrates through the sealing cover 3 and extends to the outer side of the sealing cover 3, the mounting sleeve 2 includes a sleeve 201, the sleeve 201 is filled with high-density liquid, the photographing part 4 floats on the surface of the high-density liquid, wherein the high-density liquid and the specific materials of the photographing part 4 are reasonably selected by a person skilled in the art according to cost and use requirements, so that the photographing part 4 includes a light magnetic insulating spherical shell 401, the photographing lens 402 is fixedly connected on the light magnetic insulating spherical shell 401, a weight part 404 is fixedly connected in the light magnetic insulating spherical shell 401, wherein the weight part 404 is internally provided with the whole control and processing terminal of the photographing part 4 and other necessary electronic components for work, the specific arrangement is arranged by a person skilled in the art, the weight part 404 is positioned at the bottom of the light magnetic insulation spherical shell 401, the photographing lens 402 is positioned at the upper half side of the light magnetic insulation spherical shell 401, a transmission line 403 is fixedly connected between the photographing lens 402 and the weight part 404, the lower end of the light magnetic insulation spherical shell 401 is fixedly connected with a driven iron 405, the slot bottom plate of the sleeve body 201 is fixedly connected with a directional magnet 202 matched with the driven iron 405, the directional magnet 202 and the driven iron 405 are of non-central symmetrical structures, after the support column 1 is collided by external force to incline, please refer to fig. 10, the whole photographing part 4 performs posture fine adjustment under the action of the weight part 404, so that the photographing lens 402 always faces to a monitored object, and the absorption effect between the directional magnet 202 and the driven iron 405, the whole photographing part 4 is not easy to generate a wide range of rotation angles, the normal monitoring of the photographing part 4 is not easy to be influenced, the inclination of the supporting column 1 is not only the forward inclination and the backward inclination as shown in fig. 10, but also the inclination in other directions, but the state can be deduced through fig. 10, so the state is not explained in detail in the application, and the situation can be known by the person skilled in the art according to the prior art and the description of the application.
The sealing cover 3 comprises a cover body 301, a sealing ring 302 is connected between the cover body 201 and the cover body 301, the sealing ring 302 is fixedly connected with the cover body 301, the sealing effect between the mounting sleeve 2 and the sealing cover 3 is increased, so that high-density liquid is not easy to leak, the upper end of the cover body 301 is fixedly connected with a transparent sealing film 5 matched with the shooting part 4, the transparent sealing film 5 is made of transparent high-elasticity materials, the sealing effect can be achieved by the transparent sealing film 5 in the process of transporting and transporting the mounting sleeve 2, the sealing cover 3 and the shooting part 4, the high-density liquid is not easy to leak, the transportation and the storage are facilitated, the practicability of the application is improved, after the supporting column 1 is fixedly arranged, the shooting part 4 floats upwards and is fixed, the transparent sealing film 5 can be torn off, the influence of refraction generated by light penetrating the transparent sealing film 5 on distance measurement is avoided, and when the mounting sleeve 2, the sealing cover 3 and the shooting part 4 are required to be recycled, the transparent sealing film 5 can be attached again, and then the transportation is carried out.
Referring to fig. 2, an operation method of a cultural relic crack monitoring system based on image processing mainly includes the following steps:
S1, basic calibration, namely performing calibration operation on a monitored part at the initial stage of system operation, wherein the calibration operation comprises the steps of fixing the position of an optical camera, fixing the focal length, determining the size of an image, determining the horizontal position and setting a marking point, and the marking point is formed by two-dimensional codes: the midpoint of the connection line between the first frame and the third frame of each two-dimensional code icon is the center point of the two-dimensional code icon, and the pixel difference between the two-dimensional code icons is obtained by calculating the distance between the center points of the two-dimensional code icons, as shown in figure 13,
S2, image acquisition, wherein the optical camera continuously records image information in real time and uploads the image information to an application server of the body detection system through the FTP server;
S3, image processing, namely processing the image information uploaded to the body by the body detection system application server, identifying the mark points on the image, and further converting the pixel difference value along the connecting line direction of the two-dimensional code center points according to the distance between the two-dimensional code center points measured in advance and the pixel difference value along the connecting line direction of the two-dimensional code center points of the crack width on the image to obtain the actual width of the crack:
The actual width of the crack/the pixel difference value of the crack = the distance between two-dimensional code center points/the pixel difference value between two-dimensional code icons;
S4, displaying the fracture change data on a coordinate system by using the body detection system application server according to a time axis as a sequence, wherein the fracture change data comprises a fracture length change chart and a sudden change trend chart, the fracture length change chart mainly represents a fracture change process, and the sudden change trend chart mainly represents a change amplitude in the process.
Compared with the traditional monitoring method, the non-contact monitoring method provided by the application has the advantages that excessive contact with the surface of the cultural relic body is not needed, and particularly, large-area pasting, cleaning, dampproof treatment and other works are not needed, so that the cultural relic body is furthest protected from being damaged, the method is convenient to use in various special application environments, and industrial application is enriched.
In particular, the measurement accuracy of the application is closely related to the construction site, and the specific measuring and calculating method is as follows:
measurement accuracy = observed size/imaging pixel length
The device is characterized in that the observing size refers to the size of a shot object in the length of a picture, the imaging pixel refers to the pixel size of a generated image, a camera with 200 ten thousand pixels is provided with a lens with the same specification, the nominal imaging pixel of the device is 1920 multiplied by 1080, the observing size of 150mm is taken as an example, the calculating precision of a substituted formula is 150/1920 multiplied by 0.078mm, and the higher the measuring precision is, the more accurate the monitoring is on the premise that the observing size can be observed.
In addition, the photographing angle also affects the monitoring result, taking fig. 11 as an example, when the photographing lens 402 is placed in parallel with the photographed object, the inclination angle is measured at this time to be 0 °, the observation size is 40mm, the molding pixel 1280×960 is taken as an example, and the measurement accuracy is 40/1280≡0.031mm;
When the camera lens is placed at an inclination of 30 ° to the object, referring to fig. 12, the observation size of the camera is enlarged relatively, the observation size becomes 56mm, and the molded pixel still maintains 1280×960, and the measurement accuracy is 56/1280≡0.043mm.
In the case where the imaging size is unchanged, the photographing accuracy is reduced. Therefore, when using this solution, the camera lens should be kept horizontal with the subject in order to obtain maximum accuracy. Meanwhile, in the running process of the system, the shooting angle of the camera should not be adjusted, otherwise, the working stability of the system is affected.
Second embodiment:
The optical camera shown in fig. 4-5 and fig. 8-9, the inner wall of the sleeve 201 is fixedly connected with the cleaning ring 6, the cleaning ring 6 is located at the lower side of the sealing cover 3, the cleaning ring 6 contacts with the sealing cover 3, the cleaning ring 6 comprises a fixing ring 601, the inner wall of the fixing ring 601 is fixedly connected with a plurality of cleaning fibers 602, the plurality of cleaning fibers 602 are all in a three-dimensional spiral shape, two adjacent cleaning fibers 602 are wound together to form a three-dimensional space three-dimensional structure, the surface of the photographing part 4 can be cleaned, so that the photographing lens 402 is not easy to be contaminated with high-density liquid, the normal work of the photographing part 4 is not easy to be affected, the cleaning fibers 602 are in hollow structures, the inner wall of the cleaning fibers 602 is coated with a hydrophilic high-density liquid coating, the surface of the cleaning fibers 602 is cut with a plurality of capillary cracks 603, so that the cleaned high-density liquid can easily infiltrate into the cleaning fibers 602, and is enriched in the cleaning fibers 602, after the cleaning fibers 602 are enriched to a sufficient amount, the self structure collapses and drops, the high-density liquid easily flows out of the cleaning fibers 602 under the action of self-gravity, and then the surface of the cleaning fibers 602 is restored to the original shape, the surface of the photographing fiber 602 is not easy to be affected by the high-density liquid, and the photographing part 201 is not affected by the photographing part.
The present application is not limited to the above-described embodiments, which are adopted in connection with the actual demands, and various changes made by the person skilled in the art without departing from the spirit of the present application are still within the scope of the present application.
Claims (7)
1. Cultural relic crack monitoring system based on image processing, including optical camera, its characterized in that: the optical camera is in signal connection with an FTP server, the FTP server is in signal connection with an ontology detection system application server, and the system application of the ontology detection system application server comprises system management, image processing and data analysis;
The camera includes installation cover (2) and shooting portion (4) of mutually supporting, shooting portion (4) are placed in installation cover (2), the lower extreme fixedly connected with support column (1) of installation cover (2), the opening part fixedly connected with of installation cover (2) seals lid (3) with self assorted, the upper end of shooting portion (4) runs through sealed lid (3) and extends to sealed outside of lid (3), installation cover (2) is including cover body (201), the intussuseption of cover body (201) is filled with high density liquid, shooting portion (4) float in the surface of high density liquid, shooting portion (4) are including light absolute ball shell (401), fixedly connected with shooting lens (402) on light absolute ball shell (401), light absolute ball shell (401) internal connection has counter weight portion (404), counter weight portion (404) are located the bottom of light absolute ball shell (401) and extend to sealed outside of lid (3), counter weight (402) are located the upper half ball shell (403) of light absolute ball shell, be connected with transmission line (404) between shooting lens (403).
2. The image processing-based cultural relic crack monitoring system according to claim 1, wherein: the sealing cover (3) comprises a cover body (301), a sealing ring (302) is connected between the cover body (201) and the cover body (301), and the sealing ring (302) is fixedly connected with the cover body (301).
3. The image processing-based cultural relic crack monitoring system according to claim 2, wherein: the upper end of the cover body (301) is fixedly connected with a transparent sealing film (5) matched with the shooting part (4), and the transparent sealing film (5) is made of a transparent high-elasticity material.
4. The image processing-based cultural relic crack monitoring system according to claim 1, wherein: the light magnetism isolating spherical shell is characterized in that the lower end of the light magnetism isolating spherical shell (401) is fixedly connected with a driven iron (405), a directional magnet (202) matched with the driven iron (405) is fixedly connected to a groove bottom plate of the sleeve body (201), and the directional magnet (202) and the driven iron (405) are of non-centrosymmetric structures.
5. The image processing-based cultural relic crack monitoring system according to claim 1, wherein: the inner wall fixedly connected with who overlaps body (201) washs ring (6), wash ring (6) and be located the downside of sealed lid (3), and wash ring (6) and sealed lid (3) contact, wash ring (6) include fixation ring (601), fixation ring (601) inner wall fixedly connected with a plurality of cleaning fiber (602), a plurality of cleaning fiber (602) all are three-dimensional heliciform, and adjacent two cleaning fiber (602) twine together and form three-dimensional space three-dimensional structure.
6. The image processing-based cultural relic crack monitoring system as defined in claim 5, wherein: the cleaning fiber (602) is of a hollow structure, the inner wall of the cleaning fiber (602) is coated with a high-density liquid coating, and a plurality of capillary cracks (603) are cut on the surface of the cleaning fiber (602) so that the cleaned high-density liquid can easily permeate into the cleaning fiber (602).
7. The image processing-based cultural relic crack monitoring system according to claim 1, wherein: the application method mainly comprises the following steps:
S1, basic calibration, namely performing calibration operation on a monitored part at the initial stage of system operation, wherein the calibration operation comprises the steps of fixing the position of an optical camera, fixing the focal length, determining the size of an image, determining the horizontal position and setting a marking point, and the marking point is formed by two-dimensional codes: the midpoint of the connecting line of the first frame and the third frame of each two-dimensional code icon is the center point of the two-dimensional code icon, and the pixel difference value between the two-dimensional code icons is obtained by calculating the distance between the center points of the two-dimensional code icons;
S2, image acquisition, wherein the optical camera continuously records image information in real time and uploads the image information to an application server of the body detection system through the FTP server;
S3, image processing, namely processing the image information uploaded to the body by the body detection system application server, identifying the mark points on the image, and further converting the pixel difference value along the connecting line direction of the two-dimensional code center points according to the distance between the two-dimensional code center points measured in advance and the pixel difference value along the connecting line direction of the two-dimensional code center points of the crack width on the image to obtain the actual width of the crack:
The actual width of the crack/the pixel difference value of the crack = the distance between two-dimensional code center points/the pixel difference value between two-dimensional code icons;
S4, displaying the fracture change data on a coordinate system by using the body detection system application server according to a time axis as a sequence, wherein the fracture change data comprises a fracture length change chart and a sudden change trend chart, the fracture length change chart mainly represents a fracture change process, and the sudden change trend chart mainly represents a change amplitude in the process.
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| CN1651855A (en) * | 2005-02-06 | 2005-08-10 | 重庆大学 | 2-D, large range laser deflection / displacement measuring method and apparatus |
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| KR101569193B1 (en) * | 2015-06-05 | 2015-11-13 | 주식회사 케이엠티엘 | Crack measuring device for long distance and crack measuring method using same |
| CN107907064A (en) * | 2017-11-03 | 2018-04-13 | 西安元智系统技术有限责任公司 | A kind of monitoring fractures system and method |
| WO2019210227A1 (en) * | 2018-04-26 | 2019-10-31 | Deka Products Limited Partnership | Endoscope with rotatable camera and related methods |
| CN114220070A (en) * | 2021-11-30 | 2022-03-22 | 四川天邑康和通信股份有限公司 | Camera system for locking object in image based on IPC |
| CN116550654A (en) * | 2023-05-10 | 2023-08-08 | 邹城市畜牧兽医事业发展中心 | Animal husbandry tracking and monitoring equipment based on image processing |
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| US6795110B1 (en) * | 1999-06-15 | 2004-09-21 | Philip Kossin | Weatherproof and watertight digital electronic camera, including a solid or fluid-filled digital camera operating at great depths |
| CN1651855A (en) * | 2005-02-06 | 2005-08-10 | 重庆大学 | 2-D, large range laser deflection / displacement measuring method and apparatus |
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