JP2023184316A - Analysis system, analysis method, and analysis program - Google Patents

Abstract

To provide an analysis system which reduces the time and cost required for analysis using structure wall surface information acquired at different times.SOLUTION: An analysis system 1 is provided, for analyzing wall surface information acquired at different times from a wall surface of the same structure to detect changes, the system comprising an analysis unit 31 configured to perform either of first processing for analyzing the wall surface information in a specific range of the wall surface and second processing for analyzing the wall surface information in a range greater than the specific range according to the time of acquisition.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to an analysis system, an analysis method, and an analysis program that analyze wall surface information of a structure.

In inspections of structures such as tunnels, roads, or bridges, the walls of the structures are visually inspected to detect deformations occurring on the walls. In recent years, in order to improve the efficiency of structural inspections, measurement devices have been used to acquire wall surface information of structures, and the acquired wall surface information has been analyzed to detect deformation of the structures. Examples of the measurement device include an MMS (Mobile Mapping System), a mobile measurement device such as a drone, and a measurement device measured by a person.

In addition, the soundness of the detected deformation was determined, and measures such as follow-up observation and repairs were taken depending on the soundness. Note that wall surface information of a structure obtained using a measuring device includes three-dimensional point group data obtained using a laser scanner, image data obtained using an imaging device, and the like. In addition, examples of structural deformations include cracks, floating, peeling, efflorescence, exposed reinforcing bars, corrosion, water leakage, dripping water, defects, cold joints, precipitates, junkers, and the like.

Patent Document 1 discloses an analysis system that calculates the degree of progress of deformation by calculating the difference between deformations obtained by analyzing wall surface information acquired at different times. By understanding the degree of progress of the deformation, it becomes possible to grasp the urgency of measures such as repairs to the deformation.

JP2022-56085A

However, according to the above-mentioned conventional technology, in order to grasp the degree of progress of deformation of the entire structure, it is necessary to analyze the entire wall surface information acquired at different times. In order to analyze the entire large structure such as a tunnel, road, or bridge, the amount of information to be analyzed becomes large, which poses a problem in that the time and cost required for analysis increases.

The present disclosure has been made in view of the above, and aims to provide an analysis system that can reduce the time and cost required for analysis using wall surface information of structures acquired at different times. purpose.

In order to solve the above-mentioned problems and achieve the purpose, the present disclosure is an analysis system that detects deformation by analyzing wall surface information obtained from the wall surface of the same structure at different times, an analysis unit that performs either a first process of analyzing wall surface information for a specific range of the wall surface or a second process of analyzing wall surface information for a wider range than the specific range, depending on the period of time. Be prepared.

According to the present disclosure, it is possible to obtain an analysis system that can reduce the time and cost required for analysis using wall surface information of a structure acquired at different times.

A diagram showing the functional configuration of the analysis system according to Embodiment 1 A diagram schematically showing an example of a state in which the measuring device in Embodiment 1 measures a wall surface in a tunnel. A diagram showing three-dimensional point cloud data generated by the measurement device in Embodiment 1 A diagram showing an example of an examination type table stored in the storage unit in Embodiment 1. A diagram showing the correspondence relationship between the soundness of deformation and the treatment for the soundness in Embodiment 1. Diagram showing an example of a deformation development diagram Diagram showing an example of a deformation development diagram Diagram showing an example of a deformation development diagram Diagram showing an example of a contour diagram Diagram showing an example of a contour diagram Diagram showing an example of a contour diagram Flowchart explaining the inspection procedure by the analysis system according to the first embodiment A diagram showing a hardware configuration of an analysis system according to Embodiment 1.

Below, an analysis system, an analysis method, and an analysis program according to an embodiment will be described in detail based on the drawings. Note that the present invention is not limited to this embodiment.

Embodiment 1.
FIG. 1 is a diagram showing a functional configuration of an analysis system according to a first embodiment. In the first embodiment, a case is illustrated in which the structure analyzed by the analysis system 1 is a tunnel provided in the middle of a road or a railroad. Structures, such as tunnels, are inspected regularly. For example, inspections are performed every two years, and the soundness of deformities detected during the inspection is determined. Measures to be taken to affected areas, such as follow-up observation or repair, are determined depending on the level of health. The analysis system 1 according to the first embodiment is used to inspect the structure described above.

The analysis system 1 includes a measuring device 10, a storage section 20, a processing section 30, a display section 40, and an input section 50. The measuring device 10 is a device that acquires wall surface information of a structure. For example, if information on the wall of a tunnel on a road is to be acquired while the vehicle is running, the measuring device 10 may be an automobile or a land rail vehicle. Furthermore, if information on the wall surface of a tunnel on a track is to be acquired while the vehicle is running, the measuring device 10 may be a railway vehicle or a land rail vehicle.

The measuring device 10 includes a laser scanner device 11, an imaging device 12, and an attitude/position measuring device 13.

FIG. 2 is a diagram schematically showing an example of a state in which the measuring device according to Embodiment 1 measures a wall surface in a tunnel. As shown in FIG. 2, the measuring device 10 includes a laser scanner device 11 that acquires three-dimensional point group data on the wall surface of the tunnel. The acquired three-dimensional point group data is transmitted to the storage unit 20. FIG. 3 is a diagram showing three-dimensional point cloud data generated by the measuring device in the first embodiment. The three-dimensional point cloud data is one type of wall surface information acquired by the measuring device 10.

The measuring device 10 includes an imaging device 12 that photographs the wall surface of the tunnel and acquires image data while traveling inside the tunnel. The imaging device 12 is, for example, an 8K camera. The image data is transmitted toward the storage section 20. The image data is one type of wall surface information acquired by the measuring device 10.

The attitude/position measuring device 13 is, for example, a GPS (Global Positioning System) receiver, a laser Doppler velocimeter, a pulse velocimeter, or an IMU (Inertial Measurement Unit). Posture information indicating the posture of the measuring device 10 measured by the posture/position measuring device 13 and position information indicating the position of the measuring device 10 are transmitted to the storage unit 20 .

The storage unit 20 is a storage device that stores various information. The storage unit 20 stores the three-dimensional point cloud data and image data transmitted from the measuring device 10 in association with the acquisition time and acquisition position of both data. The acquisition time is, for example, the year in which the measurement device 10 acquired the information. The acquisition time of both data is information indicating the time when the tunnel inspection was carried out. In the first embodiment, the time when the inspection was conducted is also referred to as the inspection year. In addition, the three-dimensional point group data and image data are collectively referred to as wall surface information.

The storage unit 20 stores an examination type table in which the examination type indicating the type of examination and the examination year are associated with each other. The inspection types include a detailed inspection and a simple inspection. As will be explained in detail later, the processing performed on the wall surface information in the processing unit 30 differs depending on the type of inspection.

FIG. 4 is a diagram showing an example of an examination type table stored in the storage unit in the first embodiment. According to the inspection type table shown in Figure 4, for example, the inspection to be carried out in 2022 is a detailed inspection (equivalent to a special general inspection in the case of railways), and the inspection to be carried out in 2024 is a simple inspection (equivalent to a special general inspection in the case of railways). (usually corresponds to a general examination). Furthermore, in the inspection type table shown in FIG. 4, after the detailed inspection in 2022, a simple inspection will be conducted every two years, and a detailed inspection will be conducted every 20 years. Note that the relationship between the inspection year and the inspection type may be stored in advance as table information, or may be input by the person conducting the inspection each time the inspection is performed.

The first determination result is stored in the storage unit 20. The first determination result is information indicating the soundness of the tunnel. The procedure for obtaining the first determination result will be explained in detail later. The storage unit 20 stores the second determination result. The second determination result is information obtained through a simple inspection, and is information indicating a range in which wall surface information needs to be analyzed in detail. The procedure for obtaining the second determination result will be explained in detail later.

The storage unit 20 stores analysis results obtained by analyzing wall surface information. The analysis results are, for example, a deformation development diagram and a contour diagram. In the following description, an example is given in which both a deformation development diagram and a contour diagram are created as analysis results, but only one of them may be created as an analysis result.

The processing section 30 includes an analysis section 31 , a first determination section 32 , a second determination section 33 , an analysis section 34 , and a display processing section 35 . The analysis unit 31 analyzes wall surface information acquired by the measurement device 10. The analysis unit 31 includes a processing type determination unit 311.

The processing type determination unit 311 refers to the inspection type table stored in the storage unit 20 and determines the type of processing to be performed on the wall surface information. Specifically, a wide range analysis process (second process) is performed in a detailed examination, and a partial analysis process (first process) is performed in a simple examination. Next, the procedures of wide range analysis processing and partial analysis processing will be explained.

<About wide range analysis processing>
In wide range analysis processing, detailed analysis of wall surface information is performed in a wider range than in partial analysis processing. In the first embodiment, a detailed analysis is performed on the entire acquired wall surface information. In the wide range analysis process, the analysis processing unit 312 acquires wall surface information stored in the storage unit 20. The analysis processing unit 312 analyzes the acquired wall surface information of the entire structure to detect deformation. Examples of deformations include cracks, floating, peeling, efflorescence, exposed reinforcing bars, corrosion, water leakage, dripping water, defects, cold joints, precipitates, junkers, and the like.

The analysis processing unit 312 creates a deformation development diagram based on the detected deformation. The deformation developed diagram is a diagram in which a developed diagram is created in which a wall surface from which wall surface information has been acquired is developed into a planar shape, and the detected deformation is expressed at the position where the deformation is detected on the developed diagram. If the structure is a tunnel as in Embodiment 1, a developed view is created in which the semi-cylindrical wall of the tunnel is expanded into a planar shape, and a diagram reflecting the deformation detected on the developed view is created. Become. The created deformation development diagram is transmitted to the storage unit 20.

The analysis processing unit 312 analyzes the acquired wall surface information of the entire structure and calculates the strain on the wall surface. The analysis processing unit 312 calculates distortion by comparing wall surface information acquired in different years or with a reference wall shape. The analysis processing unit 312 creates a contour diagram based on the calculated distortion. The contour diagram is a diagram showing the calculated strain using contour lines (isovalue lines). The created contour diagram is transmitted to the storage unit 20.

<About partial analysis processing>
In the partial analysis process, detailed analysis of wall surface information is performed in a specific range of the tunnel. In the partial analysis process, the analysis processing unit 312 determines that the soundness is medium soundness (second soundness) based on the result of the judgment by the first judgment unit 32 on the wall surface information acquired in the previous inspection. The specified range is included in the specific range mentioned above. Note that the result of the determination by the first determination unit 32 is the first determination result, and the determination procedure and the like will be explained in detail later. Further, the range determined to be medium soundness in the previous inspection is referred to as the previous medium soundness range.

In addition, in the partial analysis process, the second determination unit makes a determination on the wall surface information acquired in the current inspection. The analysis processing unit 312 includes the range determined to require analysis as a result of the determination by the second determination unit 33 into the above-mentioned specific range. In addition, in the following description, the range determined to require analysis is also referred to as the analysis required range. Further, the result of the determination by the second determination unit 33 is the second determination result, and the determination procedure and the like will be explained in detail later.

In this way, in the partial analysis process, the analysis processing unit 312 analyzes the wall surface information not on the entire structure but in a specific range, that is, in a narrower range than in the wide range analysis process. Note that the analysis for a specific range in the partial analysis process is performed in the same way as the wide range analysis process. That is, wall surface information is analyzed in a specific range, and a deformation development diagram and a contour diagram are created.

Next, the determination by the first determination section 32 and the second determination section 33 will be explained.

<About the determination by the first determination unit 32>
The first determination unit 32 determines whether the wide-range analysis process is performed on the wall surface information acquired in the current inspection, that is, if the current inspection is a detailed inspection, the changes created by the wide-range analysis process are Determine the soundness of the deformation using the shape development diagram and contour diagram. That is, the soundness of deformation is determined for the entire structure.

If the partial analysis process is performed on the wall surface information acquired in the current inspection, that is, if the current inspection is a simple inspection, the first determination unit 32 determines that the changes created by the partial analysis process are Determine the soundness of the deformation using the shape development diagram and contour diagram. That is, the soundness of deformation is determined in a specific range of the structure.

FIG. 5 is a diagram illustrating the degree of soundness of deformation and the correspondence relationship between the degree of health and the treatment according to the first embodiment. The degree of health is an index determined based on the progress and degree of deformation. When the health level is determined to be low health level (first health level), wall surface information is analyzed retroactively to past inspection results for the location. Further, when the health level is determined to be medium health level, it is recorded as being likely to become low health level in the future. In addition, if the tunnel is determined to have high soundness, it means that there is no problem with the tunnel's functionality, and no special measures will be taken.

The first determination unit 32 transmits information associating the determined range with the degree of health to the storage unit 20. Information associating the determined range with the degree of health is stored in the storage unit 20 as the first determination result. In the example shown in FIG. 5, the health level is divided into three categories and set, but it may be set in two categories, or may be set in more finely divided categories.

Here, an example of a deformation development diagram and a determination of the degree of health, and an example of a contour diagram and a determination of the degree of health are shown. 6 to 8 are diagrams showing examples of deformation development diagrams.

In the example shown in FIG. 6, although there is a deformation, there is no deformation that would be determined to be low or medium soundness. In the example shown in FIG. 7, range A in which water leakage and peeling have occurred as deformities is determined to have medium soundness. In the example shown in FIG. 8, range B in which water leakage, cracking, and peeling occur simultaneously as deformations is determined to have low soundness.

9 to 11 are diagrams showing examples of contour diagrams. In the example shown in FIG. 9, no large distortion is observed, and there is no distortion determined to be low or medium soundness. In the example shown in FIG. 10, range C, where there is distortion but the range is limited, is determined to be medium soundness. In the example shown in FIG. 11, the range with distortion is large, and the range D is determined to be low in soundness.

<About the determination by the second determination unit 33>
The second determination unit 33 determines that when partial analysis processing is performed on the wall surface information acquired in the current inspection, that is, when the current inspection is a simple inspection, the partial analysis processing by the analysis processing unit 312 is performed. A judgment is made to extract the necessary analysis range. The determination by the second determination unit 33 is performed before the partial analysis process. The required analysis range is, for example, a range in which deformations with a medium soundness level and deformations with a low soundness level are expected to exist.

The determination by the second determination unit 33 is performed based on the wall surface information before the analysis by the analysis processing unit 312 is performed. Therefore, the accuracy is lower than the determination made by the first determination section 32 based on the analysis by the analysis processing section 312.

Therefore, in the partial analysis process, the analysis processing unit 312 performs analysis on the analysis range, and the first determination unit 32 makes a determination on the analysis result, thereby limiting the range to be analyzed. Within that limited range, more accurate health judgments are made.

<About analysis processing by the analysis unit 34>
If there is a range in which the degree of soundness is low as a result of the judgment by the first judgment part 33 in the wide-range analysis process and the partial analysis process, the analysis part 34 checks whether there is wall surface information that has not been analyzed in past inspections. . Here, in the wide range analysis process performed in the detailed inspection, wall surface information of the entire structure is analyzed, so there is no unanalyzed wall surface information. On the other hand, in the partial analysis process performed in the simple inspection, wall surface information is analyzed only in a specific range, so there is unanalyzed wall surface information. Therefore, if a simple inspection was performed between the current inspection and the previous detailed inspection, it is determined that unanalyzed wall surface information exists in the past inspection.

The analysis unit 34 causes the analysis processing unit 312 to analyze past unanalyzed wall surface information for the range in which the judgment result by the first judgment unit 33 is low soundness in the partial analysis process. That is, in the partial analysis process, a deformation development diagram and a contour diagram at the time of past inspections are created for the range in which the determination result by the first determination unit 33 was low soundness. Further, the deformation development diagram and contour diagram created here are stored in the storage unit 20 as analysis results.

In past partial analysis processing, although the range was not extracted as an analysis range in the determination by the second determination unit 33, there are cases in which deformation has actually already occurred. In other words, there may be deformations that were not detected in past partial analysis processing. Such deformation may subsequently progress to a state where the state of health is determined to be low and may be detected during the current inspection. In such cases, conventionally, although it was possible to determine the state of the deformation detected by the current inspection, it was difficult to determine the extent of its progress. On the other hand, in the analysis system according to the first embodiment, deformation is detected retroactively in the range in which the deformation has been determined to have a low degree of health, so that the degree of progress of the deformation can be grasped.

For example, the deformation development diagram shown in Figure 6 is the analysis result of the partial analysis process performed in the simple inspection in 2024, and the deformation development diagram shown in Figure 7 is the part performed in the simple inspection in 2026. This is the analysis result of the analysis process, and it is assumed that the deformation development diagram shown in FIG. 8 is the analysis result of the partial analysis process performed in the simple inspection in 2028. The deformation in range A shown in FIG. 7 is not detected as a range requiring analysis in the partial analysis process and is not analyzed by the analysis processing unit 312, and the deformation in range B shown in FIG. Assume that the process determines that the range requires analysis, and the analysis results determine that the level of health is low. In this case, the analysis processing unit 312 analyzes a range corresponding to range B of the wall surface information acquired in 2024 according to instructions from the analysis unit 34 . Furthermore, the range A of the wall surface information acquired in 2026 is analyzed by the analysis processing unit 312. Although no deformation is detected in the analysis result of wall surface information in 2024, deformation in range A is detected in the analysis result of wall surface information in 2026.

The display processing section 35 causes the display section 40 to display the analysis results. The display unit 40 is composed of an LCD (Liquid Crystal Display) or the like, and displays various screens to the user of the analysis system 1. The display unit 40 may be a touch panel.

For example, the display processing unit 35 causes the display unit 40 to display the deformation development diagrams shown in FIGS. 7 to 8 side by side. This allows the user of the analysis system 1 to grasp the degree of progress of the deformation. In addition, by understanding the degree of progress of deformation, it becomes easier to more appropriately judge the degree of urgency of necessary measures such as repairs, even for deformations that are determined to have the same low level of soundness.

The input unit 50 is a device that can be operated by a user to input information, and is, for example, a keyboard. If the display section 40 is a touch panel, the display section 40 can function as the input section 50.

Next, the inspection procedure by the analysis system 1 will be explained using a flowchart. FIG. 12 is a flowchart illustrating an inspection procedure by the analysis system according to the first embodiment. It is assumed that a test has been performed before the test shown in FIG. 12 is performed, and the results are stored in the storage unit 20.

First, wall surface information is acquired by the measuring device 10 (step S1). There is no difference in the acquired wall surface information whether it is a detailed inspection or a simple inspection. Next, the acquired wall surface information is stored in the storage unit 20 (step S2). Next, it is determined whether the current inspection is a detailed inspection or a simple inspection (step S3).

If the current inspection is a detailed inspection (Step S3, Yes), an analysis is performed based on all wall surface information in the inspection section, a deformation development diagram and a contour diagram are created (Step S4), and the analysis results are is stored in the storage unit 20 (step S5).

If the current inspection is a simple inspection (step S3, No), the second determination unit 33 makes a determination based on the wall surface information (step S6). If there is a range that is determined to be an analysis range as a result of the determination by the second determination unit, or a previous medium-soundness range that was determined to be medium-soundness in the previous inspection (step S7, Yes), Wall surface information is analyzed for the range (step S8), and the analysis results are stored in the storage unit 20 (step S9). Note that if there is no required analysis range or previous health range (step S7, No), the process ends.

After step S5 or after step S9, the first determination unit 32 determines the degree of health based on the analysis result (step S10). Here, if there is a range determined to be low in soundness (Step S11, Yes), it is determined whether there is wall surface information that has not been analyzed in past inspections (Step S12). Note that in the detailed inspection, wide-range analysis processing is performed, so the entire wall surface information is analyzed. Therefore, in an inspection in which wide range analysis processing is performed, there is no past unanalyzed wall surface information. Therefore, the presence or absence of unanalyzed wall surface information is determined based on the presence or absence of an inspection in which the first process is performed between the past inspection in which the second process is performed and the current inspection.

Here, if there is unanalyzed wall surface information (step S13, Yes), the analysis processing unit 312 analyzes the unanalyzed wall surface information for the range determined to be low in soundness in the current inspection. is performed (step S14), and the analysis result is stored in the storage unit 20 (step S15).

If there is no unanalyzed wall surface information (step S13, No), and after step S15, the analysis result is displayed on the display unit 40 (step S16), and the process ends. The contents displayed on the display unit 40 are, for example, the analysis results of the current examination and the analysis results of previous examinations. Note that the process also ends when there is no range determined to have a low degree of health in step S11 (step S11, No).

FIG. 13 is a diagram showing the hardware configuration of the analysis system according to the first embodiment. The analysis system 1 can be realized by the processor 301 and memory 302 shown in FIG. An example of the processor 301 is a CPU (Central Processing Unit, central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, processor, also referred to as a DSP (Digital Signal Processor)) or a system LSI (Large Scale Integration). An example of the memory 302 is a RAM (Random Access Memory) or a ROM (Read Only Memory).

The analysis system 1 is realized by the processor 301 reading and executing a program for executing the operation of the analysis system 1 stored in the memory 302. It can also be said that this program causes a computer to execute the procedure or method of the analysis system 1. The memory 302 is also used as temporary memory when the processor 301 executes various processes.

The program executed by the processor 301 may be a computer program product having a computer-readable non-transitory storage medium that is executable by a computer and includes a plurality of instructions for performing data processing. . The program executed by processor 301 causes the computer to execute a plurality of instructions to perform data processing.

Furthermore, the analysis system 1 may be realized by dedicated hardware. Moreover, some of the functions of the analysis system 1 may be realized by dedicated hardware, and some may be realized by software or firmware.

According to the analysis system 1 described above, only a part of the acquired wall surface information is analyzed in the simple inspection, so it is possible to reduce the time and cost required for analysis. In addition, since wall surface information is analyzed retroactively for areas determined to have low health, it is possible to more accurately grasp the degree of progress of deformation. Therefore, it becomes possible to grasp the degree of urgency for implementing necessary measures such as repairing deformities more accurately and in more detail. Further, since the analysis of wall information going back in the past does not analyze the entire wall information, it is possible to prevent an increase in the time and cost required for analysis. Here, since there is no major difference in the wall surface information obtained whether it is a detailed inspection or a simple inspection, detailed analysis retroactive to the past is possible.

Note that the storage unit 20 may be provided outside the analysis system 1, and may be, for example, a cloud connected to the analysis system 1 via a network.

Further, the analysis range determined by the second determination unit 33 in the simple test is configured to be input by the user by operating the input unit 50 instead of being determined by the second determination unit 33. Good too. For example, a user visually observes the three-dimensional point cloud data and image data before being converted into a deformation development diagram and a contour diagram, extracts the range to be analyzed, and inputs the range by operating the input unit 50. Good too.

Further, in the analysis system 1 according to the first embodiment, the analysis results are displayed on the display unit 40 so that the user can easily understand the degree of progress of the deformation, but the analysis system 1 The degree of progress of the deformation may be determined and the determined degree of progress may be presented to the user. For example, like the health level, the degree of progress may also be expressed as an index and displayed on the display unit 40.

The configurations shown in the embodiments described above are examples of the contents of the present disclosure, and can be combined with other known technologies, and the configurations can be modified without departing from the gist of the present disclosure. It is also possible to omit or change parts.

1 analysis system, 10 measurement device, 11 laser scanner device, 12 imaging device, 13 posture/position measurement device, 20 storage unit, 30 processing unit, 31 analysis unit, 32 first determination unit, 33 second determination unit, 34 analysis section, 35 display processing section, 40 display section, 50 input section, 301 processor, 302 memory, 311 processing type determination section, 312 analysis processing section.

In order to solve the above-mentioned problems and achieve the objectives, the present disclosure provides an analysis system that detects deformation by analyzing wall surface information obtained from the wall surface of the same structure at different times , A first process that analyzes wall surface information for a specific range of the wall surface, and a second process that analyzes wall surface information for a wider range than the specific range, according to the inspection type associated with the time when the wall surface was acquired. and an analysis section that performs either one of the following.

Claims (7)

An analysis system that detects deformation by analyzing wall surface information obtained from the wall surface of the same structure at different times,
Depending on the time of acquisition, either a first process of analyzing the wall surface information for a specific range of the wall surface or a second process of analyzing the wall surface information for a wider range than the specific range. An analysis system characterized by comprising an analysis section that performs one of the following. The analysis system according to claim 1, further comprising a first determination unit that determines the degree of soundness of the deformation based on the analysis result by the analysis unit. The analysis unit is configured to retroactively analyze the wall surface information previously acquired and subjected to the first process for a range in which the health level determined by the first determination unit is a first health level. 3. The analysis system according to claim 2, wherein the wall surface information is analyzed using the following methods. 3. The specific range is a range in which the degree of health previously determined by the first determination unit is a second degree of health that is healthier than the first degree of health. Analysis system described in. further comprising a second determination unit that determines the state of the wall surface based on the wall surface information before performing the first processing and the second processing,
5. The analysis system according to claim 4, wherein the specific range includes a range determined to require analysis by the second determination unit. An analysis method for detecting deformation by analyzing wall surface information obtained from the wall surface of the same structure at different times, the method comprising:
Depending on the time of acquisition, either a first process of analyzing the wall surface information for a specific range of the wall surface or a second process of analyzing the wall surface information for a wider range than the specific range. An analysis method characterized by comprising a step of performing one of the following. An analysis program that detects deformation by analyzing wall surface information obtained from the wall surface of the same structure at different times,
Depending on the time of acquisition, either a first process of analyzing the wall surface information for a specific range of the wall surface or a second process of analyzing the wall surface information for a wider range than the specific range. An analysis program characterized by causing a computer to execute steps for performing one of the above.

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