JP2023083110A - Information processing apparatus, information processing method, and program - Google Patents

Abstract

To grasp a change in the state of deformation from various angles.SOLUTION: An information processing apparatus has: input means that receives input of first deformation data and second deformation data generated in periods different from each other; processing means that, with one of the first deformation data and the second deformation data as reference data and the other as comparison data, determines a common part common in the first deformation data and the second deformation data and a difference part present in any one of the first deformation data and the second deformation data; and display means that, when the first deformation data is the reference data, displays deformation data of the common part and deformation data of the difference part in the first deformation data, and when the second deformation data is the reference data, displays deformation data of the common part and deformation data of the difference part in the second deformation data.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a technique for determining a change in deformation state.

There are methods for detecting deformations such as cracks from images taken of inspection objects such as the walls of structures, and for determining state changes such as progress and contraction of deformations from images taken at different times. In Patent Document 1, first deformation data created from first images taken at different times and second deformation data created from second images are compared to determine the length of the deformation. Techniques for determining state changes such as sheath width are described.

JP 2019-211277 A

However, in Patent Document 1, the display of the deformation state change when the first deformation data is used as the reference data, and the display of the deformation state change when the second deformation data is used as the reference data. can not be switched, it is not possible to grasp the state change of the deformation from various aspects.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to enable multifaceted understanding of changes in the state of deformation.

In order to solve the above problems and achieve the object, an information processing apparatus of the present invention includes input means for inputting first deformation data and second deformation data created at different times; Using either one of the first deformation data and the second deformation data as reference data and the other as comparison data, a common portion common to the first deformation data and the second deformation data , a processing means for obtaining a difference portion existing in either the first deformation data or the second deformation data; and a processing means capable of identifying the deformation data of the common portion and the deformation data of the difference portion. and display means for displaying on.

ADVANTAGE OF THE INVENTION According to this invention, the state change of deformation can be grasped|ascertained now from many aspects.

FIG. 2 is a block diagram showing the hardware configuration of the information processing apparatus according to the embodiment; The figure which illustrates the deformation|transformation data table of this embodiment. FIG. 4 is a diagram showing a display example of cracks drawn based on the deformation data of the present embodiment; FIG. 4 is a diagram exemplifying a UI screen according to the embodiment; 4 is a flowchart showing state change determination processing according to the embodiment; FIG. 6 is a view showing a display example of the state change determination processing result of FIG. 5; FIG. 6 is a flowchart showing state change data creation processing in FIG. 5 ; FIG. FIG. 8 is an explanatory diagram of expansion processing of deformation data in FIG. 7 ; FIG. 8 is a flow chart showing deformation data creation processing for common portions and different portions in FIG. 7 ; FIG. The figure which illustrates the deformation|transformation data table of a common part and a different part. FIG. 5 is a diagram illustrating the relationship between deformation data of common portions and different portions and expansion regions; 4 is a flowchart showing correspondence data creation processing. The figure which illustrates a correspondence data table. FIG. 4 is an explanatory diagram of processing for determining reference data and corresponding comparison data; The figure explaining the kind of state change data. FIG. 5 is a diagram showing a display example of state change data;

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. In addition, the following embodiments do not limit the invention according to the scope of claims. Although multiple features are described in the embodiments, not all of these multiple features are essential to the invention, and multiple features may be combined arbitrarily. Furthermore, in the accompanying drawings, the same or similar configurations are denoted by the same reference numerals, and redundant description is omitted.

In the present embodiment, a computer device operates as an information processing device, and regarding deformation detected from images taken at different times, state changes such as progress, contraction, disappearance due to repair, etc. are determined, and the state of deformation is determined. An example will be described in which deformation data capable of accurately reproducing changes is created and displayed so that changes in the state of deformation can be grasped from multiple perspectives.

Deformation refers to cracks on the concrete surface due to damage, deterioration, and other factors in concrete structures such as expressways, bridges, tunnels, and dams. Cracks refer to aged deterioration, earthquake impact, etc. It is a linear damage with a start point, end point, length and width that occurs on the wall of a structure due to

<Hardware configuration>
First, with reference to FIG. 1, the hardware configuration of the information processing apparatus of this embodiment will be described.

FIG. 1 is a block diagram showing the hardware configuration of an information processing apparatus 100 of this embodiment.

In this embodiment, a computer device operates as the information processing device 100 . The processing of the information processing apparatus of this embodiment may be implemented by a single computer device, or may be implemented by distributing each function to a plurality of computer devices as necessary. A plurality of computer devices are communicatively connected to each other.

Information processing apparatus 100 includes control unit 101 , nonvolatile memory 102 , work memory 103 , storage device 104 , input device 105 , output device 106 , network interface 107 and system bus 108 .

The control unit 101 includes an arithmetic processing processor such as a CPU and an MPU that control the entire information processing apparatus 100 . The nonvolatile memory 102 is a ROM that stores programs executed by the processor of the control unit 101 and parameters. Here, the program is a program for executing state change determination processing, which will be described later. A work memory 103 is a RAM that temporarily stores programs and data supplied from an external device or the like. The storage device 104 is an internal device such as a hard disk or memory card built into the information processing apparatus 100 or an external device such as a hard disk or memory card detachably connected to the information processing apparatus 100 . The storage device 104 includes a memory card, a hard disk, and the like configured from a semiconductor memory, a magnetic disk, and the like. Also, the storage device 104 includes a storage medium configured by a disk drive that reads/writes data from/to optical disks such as DVDs and Blue-ray Discs.

The input device 105 is an operating member such as a mouse, keyboard, or touch panel that receives user operations, and outputs operating instructions to the control unit 101 . The output device 106 is a display device such as a display or a monitor configured by an LCD or an organic EL, and displays data held by the information processing apparatus 100 or data supplied from an external device. The network interface 107 is communicably connected to a network such as the Internet or a LAN (Local Area Network). The system bus 108 includes an address bus, a data bus, and a control bus that connect the components 101 to 107 of the information processing apparatus 100 so that data can be exchanged.

The nonvolatile memory 102 stores an OS (operating system), which is basic software executed by the control unit 101, and applications that cooperate with the OS to realize applied functions. Further, in the present embodiment, the nonvolatile memory 102 stores an application for the information processing apparatus 100 to implement state change determination processing, which will be described later.

The processing of the information processing apparatus 100 of this embodiment is implemented by reading software provided by an application. It is assumed that the application has software for using the basic functions of the OS installed in the information processing apparatus 100 . Note that the OS of the information processing apparatus 100 may have software for realizing the processing in this embodiment.

<Deformation data table>
Next, the data structure of the deformation data table of this embodiment will be described with reference to FIGS. 2 to 4. FIG.

In this embodiment, deformation is represented by vector data, and an example of cracking is explained as the deformation.

FIG. 2A exemplifies a first deformation data table 201 in which first deformation data created from an image of an inspection object taken at a first period is registered. FIG. 2(b) illustrates a second deformation data table 251 in which second deformation data created from an image of an inspection object taken at a second time after the first time is registered. are doing.

The first deformation data table 201 and the second deformation data table 251 include deformation IDs 202, 252, maximum widths 203, 253, number of vertices 204, 254, vertex coordinate list as information (deformation data) on cracks. 205, 255. The deformation IDs 202 and 252 are identification information uniquely assigned to each crack. The maximum widths 203 and 253 are the maximum widths (thicknesses) of cracks. Vertex numbers 204 and 254 and vertex coordinate lists 205 and 255 are information on the number of vertices and the coordinates of the vertices corresponding to the start and end points of each line segment for representing the shape of a crack as a polyline consisting of one or more line segments. be. The deformation data tables 201 and 251 consist of information acquired from images of the inspection object. Each deformation data can be traced on an image by a user using a tablet or the like, or can be input by an image analysis process or the like. It is automatically generated or input by combining them. Also, the image analysis processing may be executed using a learning model created by AI (artificial intelligence) machine learning/deep learning.

FIG. 3(a) illustrates a crack display screen 300 drawn based on the first deformation data registered in the first deformation data table 201 shown in FIG. 2(a). On the display screen 300 , a crack 301 is drawn based on the deformation data whose deformation ID is Ca001 in the deformation data table 201 . Similarly, cracks 302-310 correspond to deformities IDCa002-Ca010, respectively.

FIG. 3(b) illustrates a crack display screen 350 drawn based on the second deformation registered in the second deformation data table 251 shown in FIG. 2(b). On the display screen 350 , a crack 351 is drawn based on the deformation data whose deformation ID is Cb001 in the deformation data table 251 . Similarly, cracks 352-360 correspond to deformations IDCb002-Cb010, respectively.

FIG. 4 illustrates a GUI (Graphical User Interface) screen 400 of an application that implements the state change determination logic executed in the information processing apparatus 100 of this embodiment.

On the GUI screen 400, a first data input button 401 is a button for selecting first deformation data registered in the first deformation data table 201 of FIG. 2(a). When the user operates the button 401, a file selection dialog (not shown) is displayed and the first deformation data of the first deformation data table 201 stored in the storage device 104 is selected. The second data input button 402 is a button for selecting the second deformation data registered in the second deformation data table 251 of FIG. 2(b). When the user operates the button 402, a file selection dialog (not shown) is displayed and the second deformation data of the second deformation data table 251 stored in the storage device 104 is selected.

The first deformation data display area 411 is an area for displaying the first deformation data selected by the first data input button 401 . In the first deformation data display area 411, cracks are drawn based on the first deformation data registered in the first deformation data table 201 of FIG. 2(a). is displayed. Similarly, the second deformation data display area 412 is an area for displaying the second deformation data selected by the second data input button 402 . In the second deformation data display area 412, a crack display screen 350 drawn based on the second deformation data registered in the second deformation data table 251 shown in FIG. Is displayed.

The result display area 421 displays the result of state change determination processing described later with reference to FIG. 6 for the first deformation data table 201 in FIG. This is an area for displaying certain state change data. The reference selection button 431 is a button for selecting deformation data used as a reference in the state change determination process, and in the example of FIG. 4, the first deformation data or the second deformation data can be selected. The result output button 441 is a button for outputting the state change determination processing result as a file. The data and files output as the state change determination processing result will be described later.

<State change determination processing>
Next, the state change determination process executed in the information processing apparatus 100 of this embodiment will be described with reference to FIGS. 5 and 6. FIG.

FIG. 5 is a flowchart showing state change determination processing executed in the information processing apparatus 100 of this embodiment.

The processing in FIG. 5 is realized by the control unit 101 of the information processing apparatus 100 shown in FIG. 1 developing a program stored in the nonvolatile memory 102 in the work memory 103 and executing it to control each component. be.

In the present embodiment, the past first deformation data and the latest second deformation data created at different times are inputted, and the past first deformation data and the latest second deformation data are obtained. An example of processing for calculating common portions and different portions in , and displaying the calculated state change data will be described.

In S501, the control unit 101 reads the past first deformation data from the first deformation data table 201 stored in the storage device 104, and reads the most recent second deformation data from the second deformation data table 251. Read deformation data.

In S502, the control unit 101 creates first state change data using the past first deformation data input in S501 as reference data and the most recent second deformation data as comparison data. The first state change data includes information indicating a common portion determined to exist in common between the past first deformation data and the most recent second deformation data. Also, the first state change data includes information indicating a difference portion that is present in the past first deformation data but is determined not to be present in the most recent second deformation data. Furthermore, the first state change data includes information indicating the correspondence relationship between the common portion of the past first deformation data and the common portion of the most recent second deformation data.

In S503, the control unit 101 creates second state change data using the most recent second deformation data input in S501 as reference data and the past first deformation data as comparison data. The second state change data includes information indicating a common portion determined to exist in common between the past first deformation data and the most recent second deformation data. Also, the second state change data includes information indicating a difference portion determined to be present in the most recent second deformation data but not present in the past first deformation data. Furthermore, the second state change data includes information indicating the correspondence relationship between the common portion of the past first deformation data and the common portion of the most recent second deformation data.

The information indicating the common portion is information of the deformed portion that also exists in the comparison data among the reference data. The information indicating the difference portion is information on the deformed portion that does not exist in the comparison data but exists in the reference data. For example, when the comparison data is the past first deformation data and the reference data is the most recent second deformation data, the information indicating the difference portion is newly generated that has not been detected during the past inspection. Respond to cracks. Also, when the comparison data is the most recent second deformation data and the reference data is the past first deformation data, it corresponds to a crack that has disappeared due to repair or the like.

The state change data creation processing and data structure in S502 and S503 will be described later.

In S504, the control unit 101 sets reference data for displaying the state change data created in S502 and S503.

In S505, the control unit 101 displays the first state change data created in S502 or the second state change data created in S503 using the deformation data set in S504 as reference data as shown in FIG. Displayed in area 421 . If the reference data set in S504 is the most recent second deformation data, among the second state change data created in S503, the past first deformation data and the most recent second deformation data A common part of the data and a different part that does not exist in the past first deformation data are displayed. Further, a difference portion that does not exist in the past first deformation data of the first state change data created in S502 is displayed.

FIG. 6 shows state change data displayed in the result display area 421 of FIG. 4 in S505 of FIG. FIG. 10 shows a display example of the result of state change determination processing when comparison data is used; FIG. A display area 600 in FIG. 6 corresponds to the result display area 421 in FIG. Line segments 601-610 shown as solid lines correspond to the common cracks in the period from the past to the most recent. Line segments 621 to 624 indicated by dotted lines correspond to differences when the past first deformation data is used as comparison data and the most recent second deformation data is used as reference data, from the past to the latest. Corresponds to newly generated cracks during the period of A line segment 631 indicated by a double line corresponds to the difference portion when the latest second deformation data is used as comparison data and the past first deformation data is used as reference data, and from the past to the latest corresponds to cracks that disappeared during the period of In the example of FIG. 6, the three types of deformed portions are represented by solid lines, dotted lines, and double lines in order to be identifiable, but they may be distinguished by drawing them in different colors.

In S506, the control unit 101 determines whether the user operation received by the input device 105 is a result output instruction using the result output button 441 in FIG. 4 or a reference switching instruction using the reference selection button 431. FIG. If the control unit 101 determines that the user operation received by the input device 105 is a result output instruction, the process advances to step S507. If the control unit 101 determines that the user operation received by the input device 105 is the reference switching instruction, the process advances to step S508.

In S507, the control unit 101 outputs the state change data created in S502 and S503 as a file, and ends the process. The output file format may be any of known formats such as CSV, JSON, and XML, unique formats, and combinations thereof, as long as it can describe the modified data structure of this embodiment. Further, the state change data includes deformation data of common portions (described later in FIG. 10A), data of different portions (described later in FIG. 10B), and correspondence data (described later in FIG. 13) for each reference data. ) are created, and include a total of six types of data, which will be described later with reference to FIG. In addition, in the file output of S507, all six types of data are stored in one file, two files for each of the three types of data, three files for each data type, individual files for the six types of data, or other files. A combination may also be used.

In S508, the control unit 101 switches the deformation data to the reference data specified in S506, and returns the process to S505. When the reference data is switched to the first deformation data in the past, in the example of FIG. 6, the line segment indicated by the solid line is the first deformation data in the past, that is, the data detected during the past inspection. It shows the shape of the crack. A dotted line segment indicates the most recent second deformation data, that is, the shape of a crack newly detected during the most recent inspection. A line segment indicated by a double line indicates a crack that was detected during the past inspection but disappeared during the most recent inspection. As a result, the deformation data displayed as the reference data is displayed even if the position of the crack is shifted or the shape of the polyline is different between the past first deformation data and the most recent second deformation data. Cracks in common parts and different parts can be accurately grasped.

In the process of FIG. 5, instead of S501 to S503, the existing state change data file output in S507 may be read and converted into a displayable data structure, and the same processes as S504 to S508 may be performed. .

FIG. 7 is a flow chart showing the state change data creation processing of S502 and S503 of FIG.

In S701, the control unit 101 dilates the deformation data for each deformation ID in the deformation data table that serves as comparison data among the past first deformation data and the most recent second deformation data input in S501. Perform a dilation process to set the area.

FIG. 8 is an explanatory diagram of the dilation processing in S701 of FIG. FIG. 8(a) shows an expansion region created by performing expansion processing on the deformation data for each deformation ID in the deformation data table serving as comparison data among the deformation data tables in FIGS. 2(a) and 2(b). A data table 801 is illustrated. Expansion region data table 801 includes deformation ID 802 and expansion region information 803 . The deformation ID 802 corresponds to the deformation ID in the deformation data table of FIGS. 2(a) and 2(b). The expanded region information 803 is vector data representing the contour of the expanded region created as a result of performing expansion processing on the deformed data, and corresponds to, for example, a list of polygon vertex coordinates to be described later.

FIG. 8(b) illustrates a crack polyline 804 drawn based on the deformation data of the deformation IDCa001 in the first deformation data table 201 of FIG. 2(a). A thin line 805 in FIG. 8(c) exemplifies a polygonal expansion region created by performing expansion processing on the polyline 804 in FIG. 8(b). The black circles of the polyline 804 correspond to the vertex coordinates registered in the vertex coordinate list of the deformation IDCa001. The expanded area 805 connects the extension of each line segment that is parallel to both sides of each line segment that constitutes the polyline 804 by a predetermined distance D, and the intersection of straight lines that are perpendicular to the line segments at both ends of the polyline 804 and pass through the points of contact at both ends. Created by Note that the shape of the expansion region 805 is not limited to a polygon, and may be any closed region. For example, in FIG. 8C, the corners 806 and 807 on both sides of the vertex of the bent portion of the polyline 804 are located at a distance D centered on the vertex of the bent portion because the distance from the polyline 804 is longer than the predetermined distance D. A shape in which the corners of the outline are rounded by an arc with a radius may be used. In particular, when the bent portion of the polyline 804 has an acute angle, the difference from the predetermined distance D is remarkable. Therefore, the processing of rounding the corner contributes to the improvement of accuracy when creating the correspondence data for the common portion with the reference data. .

In S702, the control unit 101 uses the deformation data of the reference data and the expansion region data created from the deformation data of the comparison data created in S701 to determine the common portion and the difference portion of the reference data and the comparison data. Create deformation data. Deformation data creation processing for the common portion and the different portion will be described later with reference to FIG.

In S703, the control unit 101 creates correspondence data indicating the correspondence between the expansion region data created in S701 and the deformation data of the common portion created in S702. The correspondence data creation process will be described later with reference to FIG.

<Deformation data creation processing for common parts and different parts>
Next, referring to FIGS. 9 to 11, the deformation data creation processing for the common portion and the different portion in S702 of FIG. 7 will be described.

FIG. 9 is a flow chart showing deformation data creation processing for common portions and different portions in S702 of FIG.

In S901, the control unit 101 initializes the deformation data table of the common portion and the different portion, which is output as a processing result.

FIG. 10(a) exemplifies the deformation data table 1001 of the common portion. FIG. 10(b) exemplifies the deformation data table 1051 of the difference portion. The deformation data table 1001 of the common portion in FIG. 10A includes a deformation ID 1002 for identifying the deformation data of the common portion, and a reference for identifying the deformation data serving as a reference before being distinguished into the common portion and the different portion. It includes deformation ID 1003, maximum width 1004, number of vertices 1005, and vertex coordinate list 1006. The reference deformation ID 1003, maximum width 1004, number of vertices 1005, and vertex coordinate list 1006 are the same as the deformation ID 202, maximum width 203, number of vertices 204, and vertex coordinate list 205 in FIG.

The deformed data table 1015 of the different part in FIG. 10B includes a deformed ID 1052 for identifying the deformed data of the different part, and a standard for identifying the deformed data as a reference before being distinguished into the common part and the different part. It includes deformation ID 1053, maximum width 1054, number of vertices 1055, and vertex coordinate list 1056. The reference deformation ID 1053, maximum width 1054, number of vertices 1055, and vertex coordinate list 1056 are the same as the deformation ID 252, maximum width 253, number of vertices 254, and vertex coordinate list 255 in FIG. 2B. When the deformation data table 1001 of the common part in FIG. 10A and the deformation data table 1015 of the different part in FIG. becomes. The deformation data table 1001 of the common part in FIG. 10A and the deformation data table 1015 of the different part in FIG. , and the pointer is positioned at the first row in both tables when initialized.

Next, referring to FIG. 11, the processing of FIG. 9 will be described.

FIG. 11 illustrates the relationship between the reference data of the deformation data in FIGS. 2(a) and 2(b) and the expansion region data created from the comparison data. In FIG. 11A, a polyline 1100 indicates a line segment connecting the vertex coordinates of the reference data. Line segments 1101 to 1106 indicate line segments connecting two adjacent vertices in the polyline 1100 . Expansion regions 1111 and 1112 indicate the expansion region data created from the comparison data in S701.

In S902, the processing of S903 to S910 is repeated for each deformation data serving as reference data among the deformation data in FIGS.

In S903, the processing of S904 to S909 is repeated for each line segment of the polyline of the current deformation data to be processed in the reference data, that is, it is repeated for each line segment 1101 to 1106 of the polyline 1100 shown in FIG.

In S904, the control unit 101 searches the expansion region data table 801 of FIG. 8 for the deformation data of the comparison data corresponding to the expansion region that overlaps the line segment of the deformation data currently being processed. A collision determination technique or the like widely known in the field of computer games or the like is used to determine whether or not the line segment of the deformation data overlaps with the expansion region. The control unit 101 advances the process to S905 when the deformation data of the comparison data corresponding to the expansion region overlapping the line segment of the deformation data currently being processed is detected. The control unit 101 advances the process to S906 when deformation data of the comparison data corresponding to the expansion region overlapping the line segment of the deformation data to be processed is not detected. In the example of FIG. 11A, the line segment 1101 and the expansion regions 1111 and 1112 do not overlap, so the process proceeds to S905.

In S905, the control unit 101 adds the line segment of the deformation data to be processed at present to the pointer position of the deformation data table 1051 of the difference part in FIG. 10B. Since the line segment 1101 is the line segment added to the first row, a new ID is issued and registered as the deformation ID of the different portion. Also, the deformation ID and maximum width of the line segment 1101 are registered in the reference deformation ID 1053 and the maximum width 1054 of the deformation data table 1051 of the difference portion shown in FIG. 10B, respectively. Further, 2 is registered in the number of vertices 1055 and the vertex coordinates of the line segment 1101 are registered in the vertex coordinate list 1056 .

Since the next line segment 1102 overlaps the expansion region 1111, it is determined in S904 that the deformation data of the comparison data corresponding to the expansion region overlapping the line segment of the deformation data to be processed has been detected. , the process proceeds to S906.

In S906, the control unit 101 determines whether the line segment of the deformation data to be processed is included in the expansion region. If the control unit 101 determines that part of the line segment of the current deformation data to be processed is included in the expansion region, the process advances to S907, and if all the line segments are included in the expansion region, If so, the process advances to S908. A technique or the like widely known in the field of computer graphics is used to determine whether the line segment of the deformation data is included in the expansion region or not and to calculate the intersection (to be described later). Since the line segment 1102 is partially included in the expansion area, the process proceeds to S907.

In S907, the control unit 101 divides the line segments included in the expansion region and the line segments protruding from the expansion region at the intersections of the outline of the expansion region and the line segments, thereby obtaining deformation data to be compared. Calculate the position data of intermediate point coordinates that are not in the vertex coordinate list of the table. To calculate the coordinates of the midpoint, in FIG. 11B, a midpoint 1131, which is the intersection of the line segment 1102 and the contour line 1111 of the rhombus, is calculated. A midpoint 1131 divides the line segment 1102 into a line segment 1121 and a line segment 1122 and serves as a boundary between the common portion and the different portion.

In S908, the control unit 101 divides the line segment data divided in S907 into line segment data included in the expansion region and line segment data outside the expansion region. Then, the data of the line segment included in the expanded region is added to the deformation data table 1001 of the common portion of FIG. 10(a). In addition, the data of the line segment outside the expanded region is added to the deformation data table 1051 of the different part shown in FIG. 10(b). The data of the line segment 1121 are added to the deformation data table 1001 of the common portion of FIG. 10(a). The data of the line segment 1122 is added to the deformation data table 1051 of the difference portion in FIG. 10(b). In the deformation data table 1001 of the common portion of FIG. One is added to the number of the first vertex adjacent to the line segment 1101 of 1121 . Furthermore, the vertex coordinates of the middle point 1131, which are the second coordinates of the line segment 1121, are added as vertex coordinates not in the vertex coordinate list. Also, the line segment 1122 is newly added to the deformation data table 1001 of the common portion of FIG. .

Since the next line segment 1103 also overlaps with the expanded region 1111, the process advances to S906 based on the determination in S904, and further, since it is completely included in the expanded region 1111, the process advances to S909.

In S909, the control unit 101 adds the data of the line segment 1103 to the deformation data table 1001 of the common portion of FIG. 10(a). The process of adding the line segment 1103 to the line in which the vertex coordinates have already been registered is the same as the process of adding the line segment 1121 in S908.

Since the next line segment 1104 partially overlaps with the expansion region 1111, the process advances to S907 and is divided into a line segment 1123 and a line segment 1124 at an intermediate point 1132 which is an intersection with the expansion region. In S908, the data of the line segment 1123 whose end point is the intermediate point 1132 is added to the deformation data table 1001 of the common portion of FIG. 10(b) is added to the deformation data table 1051 of the difference portion. The process of adding the line segment 1123 to the line in which the vertex coordinates have already been registered is the same as the process of adding the line segment 1121 in S908.

On the other hand, the process of adding the data of the line segment 1124 to the deformation data table 1051 of the different part in FIG. 10B is as follows.

The line segment 1101 and the line segment 1121 are added to the pointer position of the deformation data table 1051 of the difference part in FIG. 1124 start and end coordinates are not included. Therefore, it can be seen that the line segment 1124 is not continuous with the polyline registered at the current pointer position. Therefore, the pointer is advanced to the next line, and the already explained addition process to the new line is performed.

Similar processing is performed for line segments 1105 and 1106 . The line segment 1106 is divided into a line segment 1125 ending at the midpoint 1133, a line segment 1126 starting at the midpoint 1133 and ending at the midpoint 1134, and a line segment 1127 starting at the midpoint 1134. . The process of adding each divided line segment to the deformation data table 1001 of the common portion in FIG. 10A and the deformation data table 1051 of the different portion in FIG. 10B is the same as S905 and S908.

The process of dividing the line segment in S907 will be further described with reference to FIG. 11(c). FIG. 11C illustrates a case where a portion of line segment 1150 overlaps expansion regions 1141 and 1142 . A line segment 1150 intersects the contour lines of the expansion regions 1141 and 1142 near the center, but if the expansion regions overlap as shown in FIG. not at the intersection of the contours, but at the intersection of the contours as a region in which the expansion regions are combined. That is, line segment 1150 is divided into three line segments 1151 , 1152 , and 1153 .

<Correspondence data creation process>
Next, the correspondence data creation process in S703 of FIG. 7 will be described with reference to FIGS. 12 to 16. FIG.

FIG. 12 is a flow chart showing the correspondence data creation process in S703 of FIG.

In S1201, the control unit 101 initializes the correspondence data table output as a processing result.

FIG. 13 exemplifies the correspondence data table 1301 . Correspondence data table 1301 includes deformation ID 1302 and correspondence information 1303 of the deformation data of the common portion. The deformation ID 1302 of the deformation data of the common portion corresponds to the deformation ID of the deformation data table 1001 of the common portion shown in FIG. 10(a). The correspondence information 1303 is a set of the deformation ID of the comparison data determined to match for each line segment constituting the polyline of the deformation data of the common portion and the result of determining the increase or decrease of the maximum crack width of the comparison data. be registered. For example, deformation IDCbm001 of the common portion deformation data in the first row of the correspondence data table 1301 corresponds to Cbm001 in the first row of the common portion deformation data table 1001 in FIG. 10A. Correspondence information 1303 is comparison data for line segments connecting vertices in the order registered in the vertex coordinate list 1006 of the deformation data table 1001 of the common portion of FIG. 2 shows the correspondence relationship with the deformation ID of the deformation data table 251 of No. 2.

In S1202, the processing of S1203 to S1209 is repeated for each row of the deformation data table 1001 in the common portion of FIG. 10(a).

In step S1203, the processing of steps S1204 to S1208 is repeated for each line segment of the polyline of the deformation data of the current common portion to be processed.

In S1204, the control unit 101 acquires deformation data of a line segment that is a candidate for comparison data corresponding to the current line segment to be processed. Here, the deformation ID of the comparison data, which is the basis of the expanded region where the line segments overlap, is retrieved from the expanded region data table 801 of FIG. 8(a). In the processing of FIG. 9, only line segments that overlap any expansion region are registered in the deformation data table 1001 of the common portion of FIG. .

In S1205, the control unit 101 determines whether or not there are a plurality of deformation data of the candidate line segment acquired in S1204. If the control unit 101 determines that there is one candidate acquired in S1204, the process advances to S1206. If the control unit 101 determines that there are multiple candidates acquired in S1204, the process advances to S1207.

In S1206, the control unit 101 determines the deformation data acquired in S1204 as candidates for comparison data corresponding to the current line segment to be processed.

In S1207, the control unit 101 selects, among the deformation data acquired in S1207, the deformation data having the longest overlapping length between the expansion region and the line segment as a candidate for comparison data corresponding to the current line segment to be processed. Determined as Note that the candidate determined in S1207 may be changed by the user.

Here, with reference to FIG. 14, the process of determining deformation data of a line segment that is a candidate for comparison data corresponding to the current line segment to be processed in S1205 to S1207 will be described.

In FIG. 14, thin lines 1401 and 1402 are expansion regions created from deformation data of comparison data. Line segments 1411 to 1415 are line segments forming polylines of deformation data registered in the deformation data table 1001 in the common portion of FIG. 10(a). A line segment 1421 and a line segment 1422 are line segments forming a polyline of another deformation data registered in the deformation data table 1001 of the common portion of FIG. 10(a). Here, since line segments 1411, 1412, 1413, and 1422 overlap only expansion region 1401, and line segment 1415 overlaps only expansion region 1402, it is determined in S1205 that there is one candidate. Then, in S1206, the deformation IDs of the comparison data that are the bases of the expansion regions 1401 and 1402 are determined as candidates. On the other hand, line segment 1414 overlaps expansion region 1401 and expansion region 1402, but since expansion region 1402 has a longer overlapping length, the candidate determined in step S1207 is the source of expansion region 1402. It becomes the deformation ID of the comparison data. Similarly, the line segment 1421 is determined as the deformation ID of the comparison data from which the expansion region 1401 is based. Note that when one line segment is included in a region where a plurality of expansion regions overlap, the length of the overlapping line segments is the same for all expansion regions. In that case, the line segment is extended to the line segments on both sides of the polyline to determine the dilation region with the longest length that overlaps all of the overlapping dilation regions. If there is no difference even if the polyline is expanded to either end of the polyline, it is determined by some method, such as random, the width of the expansion region, or the order in the expansion region data table of deformation data that is the basis of the expansion region.

In S1208, the control unit 101 sets the deformation ID of the comparison data determined as a candidate in S1206 or S1207 and the information regarding the increase/decrease in the maximum crack width and registers them in the correspondence data table. The deformation ID of the comparison data and the information on the increase/decrease in the maximum width of the crack are registered in the correspondence information 1303 of the deformation ID 1302 of the pointer position in the correspondence data table 1301 of FIG. The information regarding the increase or decrease in the maximum crack width is the maximum crack width 1004 of the current process target deformation ID 1002 registered in the deformation data table 1001 in the common part of FIG. Created by comparing the maximum crack widths 203 and 253 of the deformation ID of the comparison data in the first deformation data table 201 and the second deformation data table 251 in FIG. . If the maximum width of the crack of the deformation ID currently being processed is greater than the upper limit of a predetermined threshold with respect to the maximum width of the crack of the deformation ID registered in the deformation data of the comparison data, Wide, the predetermined threshold Narrow is registered if it is smaller than the lower limit of , and Same is registered if it is within the range between the upper limit and the lower limit of the predetermined threshold.

By repeating the processing of S1204 to S1209, for each line segment that constitutes the deformation data of the deformation ID of the common portion of the current processing target, the deformation data candidate of the comparison data and the information regarding the increase or decrease of the maximum width of the crack is registered.

By referring to the correspondence data table 1301 in FIG. 13, for example, in the past first deformation data and the most recent second deformation data, the cracks branch in a Y shape as shown in FIG. Correspondence is obtained even when the directions of are different. For example, the first past deformation data correspond to line segments 1411, 1412, 1413, 1421 and 1422, and the most recent second deformation data correspond to line segments 1414 and 1415.

In S502 of FIG. 5, the change data table of the common portion, the deformation data table of the different portion, and the past first deformation data are used as the state change data using the past first deformation data as reference data. , and the correspondence data table of the common portion of the most recent second deformation data is created. In addition, in S503 of FIG. 5, as the state change data using the latest second deformation data as reference data, the change data table of the common part, the deformation data table of the different part, and the latest second deformation data and the correspondence relationship data table of the common portion of the first deformation data in the past is created.

Here, referring to FIG. 15, the first deformation data table 1501 (FIG. 2(a)) and the second deformation data table 1502 (FIG. 2(b)) are input, and the state change determination processing result The relationship between the six types of data tables output as .

Using the second deformation data table 1502 as reference data and the first deformation data table 1501 as comparison data, the deformation data table 1511 (FIG. 10(a)) of the common part and the deformation data table 1512 of the difference part are used. (FIG. 10(b)) is created. Similarly, using the first deformation data table 1501 as reference data and the second deformation data table 1502 as comparison data, the common portion deformation data table 1521 (FIG. 10A) and the difference portion deformation data table 1521 are used as comparison data. A data table 1522 (FIG. 10(b)) is created.

Further, a correspondence data table 1531 (FIG. 13) is created between the deformation data table 1511 of the common portion and the first deformation data table 1501 using the second deformation data table 1502 as reference data. Also, a correspondence data table 1532 (FIG. 13) is created between the common portion deformation data table 1521 and the second deformation data table 1502 using the first deformation data table 1501 as reference data.

<Display example of status change data>
Finally, a display example of state change data will be described with reference to FIGS. 15 and 16. FIG.

When the second deformation data table 1502 is used as the reference data, the common portion deformation data table 1511, the difference portion deformation data table 1512 and the correspondence data table 1531 of FIG. 15 and the first deformation data A deformation data table 1522 of the difference portion using the table 1501 as reference data is used at the time of display. Further, when the first deformation data table 1502 is used as the reference data, the deformation data table 1521 of the common part, the deformation data table 1522 of the different part, and the correspondence data table 1532 of FIG. A deformation data table 1512 of a different portion using the deformation data table 1502 as reference data is used at the time of display.

First, an example of displaying two cracks with different branching directions in the past first deformation data of FIG. 16(a) and the most recent second deformation data of FIG. 16(b) will be described.

A display area 1600 in FIG. 16A shows part of the first deformation data display area 411 in FIG. The deformation data 1601 and the deformation data 1602 displayed in the display area 1600 are registered in rows with different deformation IDs in the first deformation data table 1501 . In deformation data 1601 and 1602, the vertex coordinates of the first deformation data table 1501 are drawn as circles.

A display area 1610 in FIG. 16B shows part of the second deformation data display area 412 in FIG. The deformation data 1611 and the deformation data 1612 displayed in the display area 1610 are registered in rows with different deformation IDs in the second deformation data table 1502 . In the deformation data 1611 and 1612, the vertex coordinates of the second deformation data table 1502 are drawn as circles.

A display area 1620 in FIG. 16C shows part of the display area 600 in FIG. In the display area 1620, the state change determination processing result is displayed using the second deformation data table 1502 as reference data and the first deformation data table 1501 as comparison data. In FIG. 16C, the common portion deformation data 1622 and the common portion deformation data 1623 and 1624 are registered in rows of different deformation IDs in the common portion deformation data table 1511 . That is, the deformation data 1623 and 1624 are registered as the same deformation ID, and the deformation data 1622 is registered as another deformation ID.

The deformation data 1622 to 1624 are displayed in different colors. Further, the deformation data 1622 to 1624 are based on the information on the increase or decrease in the maximum width of the crack registered as the correspondence information 1303 in the correspondence data table 1301 of FIG. 13 created in the correspondence data creation process of FIG. , the display color can be changed.
For example, when the increase/decrease in the maximum crack width is registered as Wide in the correspondence information 1303 of the deformation data 1624, the line width is made wider than the deformation data 1623 registered as Same, or the color is changed to a darker color. , you can highlight the part you want to draw the user's attention to. On the other hand, if the increase/decrease in the maximum crack width is registered as Narrow in the corresponding information 1303 of the deformation data 1622, it can be displayed in an identifiable manner, such as by making it lighter than the color of the deformation data 1623 registered as Same. . In addition, the deformation data may be displayed not only by color and thickness, but also by animation such as flashing and width thickness.

Further, the deformation data 1625 is registered in the deformation data table 1512 of the different portion, and corresponds to the portion where the maximum width of the crack of the deformation data 1624 has progressed compared to the past first deformation data. The deformation data 1624 of the common portion and the deformation data 1625 of the different portion are divided at an intermediate point 1627 that does not exist in the deformation data 1612 (second deformation data table 1502) of FIG. 16(b). there is

Further, the deformation data 1621 indicates the portion that has disappeared due to repair or the like by the time of the most recent inspection. The deformation data 1621 is registered in the deformation data table 1522 of the difference portion which is created using the first deformation data table 1501 as reference data and the second deformation data table 1502 as comparison data. The deformation data 1621 of the difference part is composed of an intermediate point 1628 that is calculated in the state change determination process of FIG. 5 and does not exist in the deformation data 1611 of FIG. 16(b). By displaying cracks in common portions and cracks in different portions in different colors in this manner, the user can intuitively grasp changes in cracks.

Next, an example of displaying the processing result when the reference data and the comparison data are switched by the reference selection button 431 will be described.

A display area 1630 in FIG. 16D shows part of the display area 600 in FIG. In the display area 1630, the state change determination processing result is displayed using the first deformation data table 1501 as a reference and the second deformation data table 1502 as comparison data.

The deformation data 1632 and 1633 are registered as the same deformation ID in a common portion deformation data table 1521 created based on the first deformation data table 1501 . In addition, deformation data 1634 is registered as another deformation ID. Similar to the display area 1620 in FIG. 16(c), the deformation data 1632 are the past first deformation data and the most recent second deformation data using the first deformation data table 1501 as reference data. The maximum crack width is registered as Wide in the common portion correspondence data table 1532 . In this case, in the correspondence data table 1532, the deformation data 1632 is highlighted more than the deformation data 1634 in which Same is registered as the maximum crack width. Similarly, in the correspondence data table 1532, the deformation data 1633 registered as Narrow for the maximum crack width is displayed in a lighter color than the deformation data 1633, for example.

In addition, the deformation data 1631 indicates a portion that has progressed from the first deformation data 1632 in the past, is registered in the deformation data table 1522 of the different portion, and is the same as the deformation data 1621 in FIG. corresponds to the deformation data of the difference part.

The deformation data 1635 is registered in the deformation data table 1512 of the difference part. The deformation data 1635 corresponds to the deformation data of the same difference portion as the deformation data 1625 of FIG. This is the deformation data of the difference part that does not exist in the deformation data.

In addition, in FIGS. 16(c) and 16(d), the lost or degenerated deformation data 1621 and 1635, which are the difference portion of the comparison data with respect to the reference data, are the deformation data 1622 and 1633 of the common portion of the reference data. It may be discontinuous. As shown in the display area 1650 in FIG. 16(e), when the past first deformation data 1651 represented by the dotted line and the most recent second deformation data 1652 represented by the solid line are superimposed, The reason is that the position is shifted or the shape is different. The reason for the change in the position and shape of the crack is considered to be the difference in the accuracy of alignment during photography and the accuracy of crack detection. In this way, the common portion of the most recent second deformation data and the difference portion that existed in the past first deformation data, or the common portion of the past first deformation data and the most recent second It is displayed discontinuously by shifting the position of the difference part of the deformation data. FIG. 16(f) shows enlarged deformation data 1633 and deformation data 1635 in the display area 1630 of FIG. 16(d). As in the display area 1660 in FIG. 16(f), the vertex 1661 of the deformation data 1633 and the midpoint 1637 of the deformation data 1635 are connected by a line segment, and the deformation data 1633 and 1635 are combined into one deformation data. can be treated as As a result, the deformation data 1633 of the common portion of the past first deformation data is used as reference data, and the deformation data 1635 of the difference portion developed from the past first deformation data is connected to form one deformation data. can be created and displayed.

Note that the line segment 1662 is a line segment that does not exist in the most recent second deformation data and the past first deformation data. good. When the deformation data 1633 of the common part and the deformation data 1635 of the different part are treated as the same crack, they are registered in the deformation data table 1522 of the different part using the first deformation data table 1501 as the reference data. The deformation ID and the reference deformation ID of the different portion that have been stored, and the reference deformation ID and the deformation ID of the common portion in the deformation data table 1521 of the common portion are used. Furthermore, it can be specified using the deformation ID of the common portion registered in the correspondence data table 1532 and the correspondence information.

Further, regarding the deformation data of the common portion, the shape of the crack may be different between the past first deformation data and the most recent second deformation data. Also in this case, by switching the reference data in S508 of FIG. 5, it is possible not only to check the changed portion based on the most recent crack shape, but also to check the changed portion based on the past crack shape. As a result, as shown in FIG. 16(f), the reference data that the user wants to check is the deformation data 1633 of the common portion of the past first deformation data, and the comparison data is the difference of the most recent second deformation data. It can be displayed in combination with partial (advancement) deformation data 1635 . In addition, as in the display area 1670 of FIG. 16(g), the deformation data 1671 of the common portion of the past first deformation data of the comparison data is superimposed and displayed on the display area 1620 of FIG. 16(c). You may The deformation data 1671 is deformation data obtained by removing the deformation data 1631 of the difference portion in FIG. 16(d) from the deformation data 1651 in FIG. 16(e). In the example of FIG. 16(g), the deformation data 1671 displays the deformation data of the common portion of the first deformation data in the past, which is not the reference data. It is not displayed, but may be highlighted.

Further, in the correspondence data table 1301 of FIG. 13, by specifying the deformation ID of the common portion that the user wants to display with a mouse or the like, the deformation data corresponding to the designated deformation ID can be displayed. good.

According to this embodiment, the user can intuitively grasp the change in deformation such as crack growth, shrinkage, and disappearance due to repair or the like. Further, by switching the reference data and the comparison data when comparing the past first deformation data and the latest second deformation data, the past first deformation data and the latest second deformation data Using one of the shape data as reference data and the other as comparison data, it becomes possible to confirm changes in cracks. Therefore, the user can grasp the state change of deformation from various aspects.

Further, by creating the deformation data of the common portion and the deformation data of the different portion, it becomes easy to calculate the amount of change in the crack. In addition, since a correspondence data table of deformation data of multiple common parts created at different times can be created and managed for each crack, even if the cracks branched in different directions, the past cracks that branched can be It is possible to associate the common portion of the first deformation data with the common portion of the most recent second deformation data. Furthermore, by knowing the correspondence relationship between the common portion of the past first deformation data and the common portion of the most recent second deformation data, it is possible to calculate the increase or decrease in the maximum crack width.

[Modification]
In the present embodiment, an example has been described in which determination of whether a line segment and an expansion region overlap and calculation of an intersection with a contour are processed as vector data, but the present invention is not limited to this. For example, a graphic library may be used to rasterize an object in which a line segment and an expansion area are painted into binary bitmaps, and bit operations of both raster images may be used to perform overlap determination and intersection calculation. By adding a GPU (Graphics Processing Unit) to the information processing apparatus 100 of FIG. 1 and allowing the graphics library to perform rasterization using the GPU, processing speed can be increased.

[Other embodiments]
The present invention supplies a program that implements one or more functions of the above-described embodiments to a system or device via a network or a storage medium, and one or more processors of the computer of the system or device reads the program. It can also be realized by executing processing. The invention can also be implemented by a circuit (eg, an ASIC) that implements one or more functions.

The invention is not limited to the embodiments described above, and various modifications and variations are possible without departing from the spirit and scope of the invention. Accordingly, the claims are appended to make public the scope of the invention.

DESCRIPTION OF SYMBOLS 100... Information processing apparatus, 101... Control part, 102... Non-volatile memory, 103... Work memory, 104... Storage device, 105... Input device, 106... Output device, 107... Network interface, 108... System bus

In order to solve the above problems and achieve the object, the information processing apparatus of the present invention includes acquisition means for acquiring first deformation data and second deformation data created at different times; one of the first deformation data and the second deformation data as reference data and the other as comparison data, a common portion common to the first deformation data and the second deformation data; a processing means for obtaining a difference portion between the first deformation data and the second deformation data; The deformation data of the common part and the deformation data of the different part are controlled to be displayed on the display means , and when the second deformation data is the reference data, the deformation data of the second deformation data is displayed. and control means for controlling the deformation data of the common portion and the deformation data of the different portion to be displayed on the display means .

FIG. 3(a) illustrates a crack display screen 300 drawn based on the first deformation data registered in the first deformation data table 201 shown in FIG. 2(a). On the display screen 300 , a crack 301 is drawn based on the deformation data whose deformation ID is Ca001 in the first deformation data table 201 . Similarly, cracks 302-310 correspond to deformities IDCa002-Ca010, respectively.

FIG. 4 illustrates a GUI (Graphical User Interface) screen 400 of an application that implements state change determination processing executed in the information processing apparatus 100 of this embodiment.

In addition, in S502 of FIG. 5, as state change data using the past first deformation data as reference data, the common portion deformation data table, the difference portion deformation data table, and the past first deformation data are used. A correspondence data table is created for common portions of the data and the most recent second deformation data. In addition, in S503 of FIG. 5, as state change data using the most recent second deformation data as reference data, the common portion deformation data table, the different portion deformation data table, and the most recent second deformation data table are used as the state change data. A correspondence data table is created for common portions of the data and the past first deformation data.

When the second deformation data table 1502 is used as the reference data, the common portion deformation data table 1511, the difference portion deformation data table 1512 and the correspondence data table 1531 of FIG. 15 and the first deformation data A deformation data table 1522 of the difference portion using the table 1501 as reference data is used at the time of display. When the first deformation data table 1501 is used as the reference data, the deformation data table 1521 of the common part, the deformation data table 1522 of the different part, and the correspondence data table 1532 of FIG. A deformation data table 1512 of a different part with the deformation data table 1502 as reference data is used at the time of display.

Claims (16)

input means for inputting first deformation data and second deformation data created at different times;
Using either one of the first deformation data and the second deformation data as reference data and the other as comparison data, common common to the first deformation data and the second deformation data a processing means for obtaining a portion and a difference portion existing in either the first deformation data or the second deformation data;
when the first deformation data is the reference data, displaying the deformation data of the common part and the deformation data of the difference part of the first deformation data;
display means for displaying the deformation data of the common portion and the deformation data of the different portion of the second deformation data when the second deformation data is the reference data; and information processing equipment. a selection means capable of selecting which one of the first deformation data and the second deformation data is displayed as the reference data;
When the first deformation data is selected as the reference data, the display means displays the deformation data of the common portion and the deformation data of the different portion of the first deformation data, and the deformation data of the difference portion. Display the deformation data of the difference part of the deformation data of 2,
When the second deformation data is selected as the reference data, the deformation data of the common part and the deformation data of the different part of the second deformation data, and the first deformation data 2. The information processing apparatus according to claim 1, wherein the deformation data of the different portion of the is displayed. 3. The information processing apparatus according to claim 1, wherein the display means displays the deformation data of the common portion and the deformation data of the different portion so as to be identifiable. 4. The information processing according to any one of claims 1 to 3, wherein said display means displays, in the deformation data of said common portion, a portion in which the width of the deformation is changing so as to be identifiable. Device. When the deformation data of the difference portion of the comparison data with respect to the reference data is discontinuous with the reference data, the display means connects the deformation data of the difference portion and the reference data to form one 5. The information processing apparatus according to claim 1, wherein the deformation data is displayed. 5. The information processing apparatus according to any one of claims 1 to 4, wherein said display means displays a combination of a common portion of said reference data and a different portion of said comparison data. 5. The information processing apparatus according to any one of claims 1 to 4, wherein the display means displays the common portion of the comparison data so as to be superimposed on the common portion and the difference portion of the reference data. One of the first deformation data and the second deformation data is used as reference data, the other is used as comparison data, an expansion region is set based on the comparison data, and the expansion region and the reference data are set. 8. The information processing apparatus according to any one of claims 1 to 7, further comprising creating means for creating deformation data in which the overlapping portion is the common portion and the non-overlapping portion is the different portion. . The creating means uses the second deformation data as reference deformation data and the first deformation data as deformation data to be compared, the deformation data of the common portion and the deformation data of the difference portion. and creating correspondence data indicating the correspondence between the common portion of the reference deformation data and the comparison target deformation data,
Using the first deformation data as reference deformation data and the second deformation data as deformation data to be compared, the deformation data of the common portion, the deformation data of the difference portion, and the reference deformation data. 9. The information processing apparatus according to claim 8, wherein correspondence data indicating a correspondence relationship between the deformation data and the common portion of the deformation data to be compared is created. The deformation data includes identification information for each deformation, the width of the deformation, the number of vertices of the line segment that constitutes the deformation, and the coordinates of the vertices,
10. The information processing apparatus according to claim 8, wherein the data of the expansion region includes identification information for each deformation and coordinates of the contour of the expansion region. The first deformation data is deformation data created from an image of the inspection object taken at a first time period, and the second deformation data is a second deformation data after the first time period. 11. The information processing apparatus according to any one of claims 1 to 10, wherein the deformation data is generated from an image of an object to be inspected taken at a certain time. 10. The information processing apparatus according to claim 9, wherein said correspondence data includes information indicating a correspondence relationship between deformation data of common portions of said reference data and said comparison data. 13. The information processing apparatus according to claim 12, wherein the correspondence data includes information indicating the width of the deformation data of the common portion. 14. The information processing apparatus according to any one of claims 1 to 13, wherein the deformation data is data relating to cracks. An information processing method for detecting a change in deformation state,
an input means inputting first deformation data and second deformation data created at different times;
The processing means sets either one of the first deformation data and the second deformation data as reference data and the other as comparison data, and generates the first deformation data and the second deformation data. and a step of determining a difference portion that exists in either the first deformation data or the second deformation data;
display means, when the first deformation data is the reference data, displays the deformation data of the common part and the deformation data of the different part of the first deformation data;
and displaying the deformation data of the common part and the deformation data of the different part of the second deformation data when the second deformation data is the reference data. information processing method. A program for causing a computer to function as each means of the information processing apparatus according to any one of claims 1 to 14.

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