Information processing apparatus, information processing method, and program

Abstract

To generate a determination condition for accurately evaluating the soundness of a structure.SOLUTION: An information processing apparatus includes a segmentation unit, a selection unit, a calculation unit, and a generation unit. The segmentation unit divides a plurality of measurement points for each segment of a structure on the basis of three dimensional position information of the plurality of measurement points included in the structure in a two dimensional image. The selector selects a plurality of pieces of displacement information including a displacement amount at each of a plurality of measurement points included in a preset period and a range set for the structure. The calculation unit calculates a correlation index value indicating a correlation for at least one segment included in the set range on the basis of the selected displacement information and environment information indicating a state of an environment around the set range. The generation unit generates a determination condition for evaluating the health of the structure for at least one segment based on the index value of the at least one segment.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an information processing device, an information processing method, and a program. [Background technology]

[0002] For example, Patent Document 1 discloses a soundness assessment device that diagnoses the soundness of a structure. The soundness assessment device disclosed in Patent Document 1 has a selection unit, a calculation unit, and a generation unit. The selection unit disclosed in Patent Document 1 selects displacement information for a range from displacement information representing the displacement amounts of multiple measurement points included in an area including the structure, based on a predetermined period and a range set for the structure. The calculation unit disclosed in Patent Document 1 calculates an index representing a correlation based on the displacement information for the range during the period and environmental information representing the state of the environment surrounding the range. The generation unit disclosed in Patent Document 1 generates judgment conditions used to evaluate the soundness of the structure based on the calculated multiple indexes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2023 / 135714 Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, a structure may include multiple segments with different displacement characteristics depending on the state of the surrounding environment. For example, a bridge over which vehicles travel may be composed of a road section including the road surface on which the vehicles travel, a superstructure section above the road section, and a substructure section below the road section. These road, superstructure, and substructure segments may each have different displacement characteristics depending on the environmental conditions surrounding them, such as the temperature.

[0005] In the soundness assessment device disclosed in Patent Document 1, the set range may include measurement points belonging to different segments. In such cases, the accuracy of the calculated index value representing the correlation may be reduced, and if the soundness of a structure is assessed using a judgment condition generated based on such an index value, the accuracy of the assessment may be reduced.

[0006] One of the objectives of the present disclosure is to generate judgment conditions that can accurately evaluate the soundness of a structure. [Means for solving the problem]

[0007] The information processing device according to the present disclosure includes: a segmentation means for dividing a plurality of measurement points included in a structure in a two-dimensional image into segments of the structure based on three-dimensional position information of the measurement points; a selection means for selecting a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in a predetermined period and a predetermined range for the structure; a calculation means for calculating a correlation index value representing a correlation for at least one of the segments included in the set range based on the selected displacement information and environmental information indicating an environmental state around the set range; and a generating means for generating a judgment condition for evaluating the soundness of the structure for the at least one segment based on the correlation index value of the at least one segment.

[0008] The information processing method in the present disclosure includes: One or more computers based on three-dimensional position information of a plurality of measurement points included in a structure in a two-dimensional image, classifying the plurality of measurement points into segments of the structure; selecting a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in a predetermined period and a predetermined range for the structure; calculating a correlation index value representing a correlation for at least one of the segments included in the set range based on the selected displacement information and environmental information indicating an environmental state around the set range; A judgment condition for evaluating the health of the structure for the at least one segment is generated based on the correlation index value of the at least one segment.

[0009] The program in this disclosure is On one or more computers, based on three-dimensional position information of a plurality of measurement points included in a structure in a two-dimensional image, classifying the plurality of measurement points into segments of the structure; selecting a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in a predetermined period and a predetermined range for the structure; calculating a correlation index value representing a correlation for at least one of the segments included in the set range based on the selected displacement information and environmental information indicating an environmental state around the set range; and generating, based on the correlation index value of the at least one segment, a judgment condition for evaluating the soundness of the structure for the at least one segment. [Effects of the Invention]

[0010] According to the present disclosure, it is possible to generate judgment conditions that can accurately evaluate the soundness of a structure. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a block diagram showing an outline of the configuration of a first information processing device according to the present disclosure. [Figure 2] 10 is a flowchart showing an outline of a processing operation of the first information processing device according to the present disclosure. [Figure 3] 1 is a diagram showing a bridge, which is an example of a structure to be evaluated according to the present disclosure, viewed from above. [Figure 4] 1 is a side view of a bridge, which is an example of a structure to be evaluated according to the present disclosure. FIG. [Figure 5] FIG. 2 is a block diagram showing a detailed example of the configuration of a first information processing device according to the present disclosure. [Figure 6] FIG. 1 is a diagram showing an example of dividing measurement points included in a bridge, which is an example of a structure to be evaluated according to the present disclosure, into segments. [Figure 7] FIG. 10 is a diagram showing an example of the configuration of a screen for a user to specify a period and range in the present disclosure. [Figure 8] 3 is a block diagram showing a configuration example of a first selection unit according to the present disclosure. FIG. [Figure 9] FIG. 2 is a block diagram showing an example configuration of a first calculation unit according to the present disclosure. [Figure 10] FIG. 10 is a diagram illustrating an example of a box plot showing the correlation between the amount of displacement and the environmental condition value according to the present disclosure. [Figure 11] 10 is a flowchart showing a detailed example of the processing operation of the first information processing device according to the present disclosure. [Figure 12] FIG. 2 is a diagram illustrating an example of the physical configuration of a first information processing device according to the present disclosure. [Figure 13] FIG. 10 is a block diagram showing a configuration example of a second information processing device according to the present disclosure. [Figure 14] FIG. 4 is a block diagram showing an example configuration of a second calculation unit according to the present disclosure. [Figure 15] 10 is a flowchart showing an example of processing operations of a second information processing device according to the present disclosure. [Figure 16] FIG. 10 is a block diagram showing a configuration example of a third information processing device according to the present disclosure. [Figure 17] 10 is a flowchart illustrating an example of a processing operation of a third information processing device according to the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, in this disclosure, the drawings relate to one or more embodiments. In all drawings, similar components are designated by similar reference numerals, and descriptions thereof will be omitted as appropriate.

[0013] [Embodiment 1] As shown in FIG. 1, the information processing device 100 according to the present disclosure includes a segmentation unit 120, a selection unit 140, a calculation unit 150, and a generation unit 160.

[0014] The segmentation unit 120 divides the structure into segments based on the three-dimensional position information of the measurement points included in the structure in the two-dimensional image. The selection unit 140 selects multiple pieces of displacement information including the displacement amounts of the measurement points included in a predetermined period and a predetermined range for the structure. The calculation unit 150 calculates a correlation index value representing the correlation for at least one segment included in the set range based on the selected displacement information and environmental information indicating the state of the environment around the set range. The generation unit 160 generates a judgment condition for evaluating the soundness of the structure for the at least one segment based on the index value of the at least one segment.

[0015] According to this information processing device 100, it is possible to divide a plurality of measurement points into segments of a structure and generate judgment conditions for the segments, thereby making it possible to generate judgment conditions that can accurately evaluate the soundness of the structure.

[0016] The information processing device 100 according to the present disclosure executes information processing as shown in FIG.

[0017] The segmentation unit 120 divides the plurality of measurement points included in the structure in the two-dimensional image into segments based on the three-dimensional position information of the plurality of measurement points (step S120).

[0018] The selection unit 140 selects a plurality of pieces of displacement information including the displacement amounts of the respective measurement points included in a preset period and a range set for the structure (step S140).

[0019] The calculation unit 150 calculates a correlation index value representing the correlation for at least one segment included in the set range based on the selected displacement information and environmental information indicating the state of the environment around the set range (step S150).

[0020] The generating unit 160 generates, based on the index value of at least one segment, a judgment condition for evaluating the soundness of the structure for the at least one segment (step S160).

[0021] This information processing allows multiple measurement points to be divided into segments of the structure, and judgment conditions for each segment can be generated, thereby enabling the generation of judgment conditions that can accurately evaluate the soundness of the structure.

[0022] (Detailed example) A detailed example of the information processing device 100 and its processing operation will be described below.

[0023] The information processing device 100 is a device for evaluating the soundness of a structure.

[0024] A structure is a structure supported by a foundation or the like and made up of multiple materials, components, etc. Examples of structures include bridges, roads, buildings, dams, levees, and facilities. Examples of facilities include airports, stations, ports, factories, etc.

[0025] The object of evaluating the soundness of a structure (evaluation object) may be the entire structure or a part of the structure.

[0026] Generally, a structure may deform depending on the state of the surrounding environment. Therefore, the position of a point (e.g., a measurement point) on the structure may change (displace) depending on the state of the surrounding environment. The environmental state is preferably at least one of, for example, temperature, precipitation, snowfall, solar radiation, or the difference between these, and is expressed using a value such as a numerical value or level. Hereinafter, a value indicating the environmental state will be referred to as an environmental state value. The environmental state may further include at least one of altitude, distance from the coastline, distance from a river, etc.

[0027] The characteristics of the displacement at a measurement point on a structure also change depending on the deterioration of the structure. Therefore, for example, the soundness of the structure, such as whether or not the structure is deteriorating and to what extent, can be evaluated using an index value (correlation index value) that represents the correlation between a value based on the displacement at the measurement point and an environmental condition value of the environment surrounding the measurement point.

[0028] In this embodiment, an example will be described in which the value based on the amount of displacement is the amount of displacement itself, and the environmental condition value is the temperature difference.

[0029] The value based on the amount of displacement is not limited to the amount of displacement, but may be a value that changes depending on the amount of displacement, such as a corrected amount of displacement described later in other embodiments, a parameter value of a displacement model, etc. Furthermore, the environmental state value is not limited to a temperature difference, but may be, for example, a difference in the amount of solar radiation.

[0030] On the other hand, the deformation or displacement characteristics of a structure often differ depending on the structure, materials, etc. that make up the structure. Therefore, when evaluating the soundness of a structure based on the displacement amounts of measurement points that belong to portions (segments) with different displacement characteristics, the soundness can be evaluated more accurately by using judgment conditions for each segment rather than by using a common judgment condition.

[0031] Such segments may be set, for example, as parts of a structure that have commonality or similarity in deformation or displacement characteristics according to the environmental state. Note that segments may be determined in advance as appropriate, and the method of determining the segments is not limited to the example given here.

[0032] Below, an example will be described in which the structure to be evaluated is a bridge BR as shown in Figures 3 and 4, and the environmental condition is temperature. Figure 3 is a diagram showing an example of the bridge BR to be evaluated as seen from above. Figure 4 is a diagram showing an example of the bridge BR to be evaluated as seen from the side. For example, an upper structure portion P1, a road portion P2, and a lower structure portion P3 may be set as segments of the bridge BR.

[0033] The road section P2 is a segment on which a road is installed. The road section P2 is mainly composed of, for example, a bridge girder and a road installed on top of it. The bridge girder is mainly made of, for example, steel or concrete. The road is mainly made of, for example, asphalt.

[0034] The upper structure P1 and the lower structure P3 are segments that respectively constitute the upper and lower parts of the road section P2. The upper structure P1 has a truss structure, for example, mainly made of steel frames. The lower structure P3 has a column structure, for example, mainly made of steel, concrete, etc.

[0035] Note that the segments related to the bridge BR are not limited to those exemplified here. For example, the segments may be defined as being subdivided into each end portion within a predetermined range from the bridge end portion and a central portion between the end portions for part or all of the upper structure portion P1, the road portion P2, and the lower structure portion P3. Also, for example, the road portion P2 and the lower structure portion P3 may be defined as a single segment.

[0036] Various technologies may be used to measure the amount of displacement at measurement points in a structure. For example, the amount of displacement may be measured using sensors such as acceleration sensors, strain sensors, image sensors, and infrared sensors. However, in this case, installation may be difficult due to the need to install a large number of sensors and the increased effort required for sensor maintenance and inspection. Furthermore, the number and locations of sensors that can actually be installed are limited, so when the measurement results are used to evaluate the soundness of a structure, the accuracy of the evaluation may be poor.

[0037] Therefore, remote sensing is suitable for measuring the amount of displacement at a measurement point. In the following, an example will be described in which a synthetic aperture radar (SAR) is used to measure the amount of displacement at a measurement point.

[0038] In SAR, microwaves are emitted toward the ground from an antenna mounted on a flying object such as a satellite or aircraft, and measurement data (SAR images) are generated using the waves reflected from the structure being evaluated.

[0039] The displacement is, for example, the amount of movement of the measurement point along the radar irradiation direction (line of sight) from the flying object to the measurement point. Such displacement is generated, for example, by interferometric processing using phase information contained in a pair of SAR images obtained by measuring the target structure at different times.

[0040] In more detail, for example, the displacement amount at time ti is generated by interference processing between an SAR image based on measurement at a predetermined reference time t0 and an SAR image based on measurement at time ti. The reference time t0 is, for example, the time when a structure is completed, or the time when the structure is considered to be normal. i is an integer between 1 and n, where n is an integer greater than or equal to 1. The reference time t0 and the multiple times t1 to tn may be predetermined time intervals, such as two weeks, three months, or one year. Note that the reference time t0 and the times t1 to tn may each be determined appropriately and are not limited to those exemplified here.

[0041] (Detailed example of information processing device 100) (Example of detailed functional configuration of information processing device 100) The information processing device 100 may include, for example, as shown in FIG. 5, a memory unit 110, a segmentation unit 120, a setting unit 130, a selection unit 140, a calculation unit 150, a generation unit 160, an evaluation unit 170, and an output unit 180.

[0042] (Regarding the storage unit 110) The storage unit 110 stores various types of information.

[0043] The storage unit 110 stores, for example, measurement point information and structure information in advance.

[0044] The measurement point information is information about a plurality of measurement points at each measurement time (e.g., reference time t0, times t1 to tn) of the bridge BR. For example, the measurement point information may include at least one of measurement data at each measurement time, measurement point position information, displacement information, etc.

[0045] The measurement data may include, for example, SAR images.

[0046] The measurement point position information may include, for example, the position of each measurement point. The positions included in the measurement point position information may be represented by positions in an SAR image, which is a two-dimensional image. In detail, for example, the positions included in the measurement point position information may be represented using a two-dimensional coordinate system with a predetermined position on the SAR image as the origin.

[0047] The displacement information may include, for example, the amount of displacement of each measurement point. As described above, the amount of displacement is, for example, the amount of movement of the measurement point along the radar irradiation direction (line of sight direction) from the flying object toward the measurement point.

[0048] The measurement point information is not limited to the examples given here, and may include, for example, measurement point identification information for identifying each measurement point.

[0049] The structure information is information relating to the bridge BR that is the evaluation target. The structure information may include, for example, at least one of structure position information, segment setting information, and the like.

[0050] The structure position information is, for example, information that can identify the position of any point on the bridge BR in three dimensions. In detail, for example, the structure position information may include at least one of representative position information, structure dimension information, and the like.

[0051] The representative position information is information indicating the positions of one or more representative points predetermined for the bridge BR. The position indicated by the representative position information is expressed in three dimensions using, for example, latitude, longitude, and altitude. Note that the method of expressing the position in three dimensions is not limited to the example given here.

[0052] The structure dimension information is information including the dimensions of the bridge BR. The structure dimension information may include, for example, the dimensions of one or more predetermined locations on the bridge BR. The locations may be the overall dimensions of the bridge BR or the dimensions of a portion of the bridge BR.

[0053] Note that the structure information is not limited to those exemplified here, and may include, for example, at least one of structure identification information for identifying a structure, structure information indicating the structure of the structure, etc. Furthermore, for example, the structure information may include at least one of structure type information, material type information, member identification information, member dimension information, member position information, etc. The structure type information is, for example, information indicating the type of structure of each part that constitutes the structure (e.g., truss structure, columnar, box-like, etc.). The material type information is, for example, information indicating the main material that constitutes the structure. The material type information is information for identifying the members that constitute the structure. The member dimension information is information indicating the dimensions of the members that constitute the structure. The member position information is information indicating the positions of the members that constitute the structure. The structure type information, material type information, member identification information, structure dimension information, member dimension information, member position information, etc. may be associated with segments using, for example, segment identification information, which will be described later.

[0054] The segment setting information is information for identifying at least one segment of the bridge BR. The segment setting information is set, for example, by a user. In this embodiment, for example, three segments, an upper structure portion P1, a road portion P2, and a lower structure portion P3, are set for the bridge BR as described above. In this case, the segment setting information may be information for identifying each segment (the upper structure portion P1, the road portion P2, and the lower structure portion P3) set by the user. In detail, for example, each segment may be divided by elevation. In this case, the segment setting information may include the elevation corresponding to each segment. For example, the segment setting information may include information indicating that the upper structure portion P1 is a portion above an elevation h1 [m], the road portion P2 is a portion below an elevation h1 [m] and above h2 [m], and the lower structure portion P3 is a portion below an elevation h2 [m].

[0055] The segment setting information is not limited to the examples given here. For example, the segment setting information may include a combination of the elevation corresponding to each segment and the horizontal distance or area. Furthermore, for example, the segment setting information may include one or more combinations of members, parts, etc. that make up a structure.

[0056] The storage unit 110 may store, for example, at least one of setting information, environment information, index information, and judgment condition information.

[0057] The setting information may include, for example, period information indicating a period set by the user and range information indicating a range set by the user. The range information is, for example, information indicating a range set for a structure, and may be expressed in three dimensions using latitude, longitude, altitude, etc.

[0058] The range set for the structure may include, for example, a first range and a second range. The first range is a range to be evaluated. The second range is a range for generating judgment conditions. There may be at least one second range, and multiple second ranges may be set. In other words, multiple set ranges may be set, including a first range to be evaluated and at least one second range for generating judgment conditions.

[0059] In the following explanation, an example will be given in which the second range is included in the same bridge BR as the first range, but the second range may be set for a structure different from the first range. In this case, the second range may be set for a structure similar in structure to the structure for which the first range is set (this is the structure to be evaluated, which is a bridge BR in this embodiment).

[0060] The environmental information is information including environmental state values. The environmental information includes, for example, the air temperature around the bridge BR. The environmental information may include, for example, the air temperature corresponding to each measurement time (for example, reference time t0, times t1 to tn). The environmental information may include, for example, the air temperature difference corresponding to each of the times t1 to tn. The air temperature difference corresponding to time ti may be the difference ΔTi (for example, ΔTi = Ti - T0) between the air temperature T0, which is the environmental state value at the reference time t0, and the air temperature Ti, which is the environmental state value at time ti.

[0061] The environmental information may be acquired from an external server device or the like that provides weather information using, for example, a communication unit (not shown) of the information processing device 100. The communication unit is a processing unit that transmits and receives information to and from the external server device or the like via, for example, a wired, wireless, or a combination of these communications network. For example, if the environmental information includes a temperature difference and the external server device or the like provides current and past temperatures, the communication unit may perform a calculation to generate the environmental information. For example, the communication unit may calculate a temperature difference using the temperature acquired from the external server device or the like and the temperature at a reference time t0, and store the environmental information including the calculated temperature difference in the storage unit 110.

[0062] The index information is information including the calculated correlation index value.

[0063] The correlation index value may include a first index value and a second index value. The first index value is a correlation index value calculated for each segment included in the first range. The second index value is a correlation index value calculated for each segment included in the second range.

[0064] As described above, there may be one or more segments and second ranges, i.e., the correlation index value may be multiple and include a first index value for at least one segment included in the first range and a second index value for at least one segment included in at least one second range.

[0065] The judgment condition information is information including the generated judgment condition. For example, as described below, the judgment condition for each segment is generated based on the second index value of the corresponding segment. As described above, the second index value is calculated according to the segments included in the second range, so there may be one or more second index values. In other words, the judgment condition for at least one segment is generated based on the second index value for at least one corresponding segment.

[0066] 5 shows an example in which the information processing device 100 includes the storage unit 20, but some or all of the information stored in the storage unit 20 may be stored in a storage unit included in an external device different from the information processing device 100. In this case, the information processing device 100 and the external device may be connected to each other so as to be able to transmit and receive information to and from each other via a communication network configured, for example, by wire, wirelessly, or a combination of these. The information processing device 100 may acquire information stored in a storage unit included in the external device via the communication network, or may store various information acquired by setting, generating, calculating, or the like in the information processing device 100 in a storage unit included in the external device.

[0067] (Regarding the segmentation unit 120) The segmentation unit 120 divides the bridge BR into segments based on, for example, three-dimensional position information of the measurement points included in the bridge BR in the SAR image, which is a two-dimensional image. The SAR image here may be, for example, a two-dimensional image of the bridge BR viewed from above, as shown in Fig. 3.

[0068] For example, the segmentation unit 120 generates three-dimensional position information of a plurality of measurement points from the two-dimensional positions of the plurality of measurement points included in the bridge BR in the SAR image, using the SAR image and structure position information stored in advance in the storage unit 110. The three-dimensional position information is information that indicates the positions of the plurality of measurement points in three dimensions.

[0069] For example, the segmentation unit 120 divides the multiple measurement points into each of the segments of the bridge BR (e.g., upper structure portion P1, road portion P2, lower structure portion P3) using segment setting information pre-stored in the memory unit 110 and three-dimensional position information of the multiple measurement points.

[0070] For example, the segmentation unit 120 identifies the three-dimensional position of a measurement point using the three-dimensional position information, and identifies to which segment the three-dimensional position belongs using the segment setting information. By performing such processing for each of the multiple measurement points, the multiple measurement points are divided into segments. Note that the method of dividing the multiple measurement points into segments is not limited to the example given here.

[0071] Figure 6 is a diagram showing an example in which multiple measurement points included in a structure in a 2D image are divided into segments. The figure shows an example in which multiple measurement points included in a bridge BR in an SAR image are divided into an upper structure portion P1, a road portion P2, and an lower structure portion P3. Measurement points divided into the upper structure portion P1 are shown with open circles. Measurement points divided into the road portion P2 are shown with filled circles. Measurement points divided into the lower structure portion P3 are shown with an X.

[0072] Alternatively, the segment setting information may not be stored in advance in the storage unit 110, and the segmentation unit 120 may generate the segment setting information according to a user's designation. In this case, for example, the segmentation unit 120 may generate segment setting information for identifying each segment by receiving designation of an elevation corresponding to each segment of the bridge BR. In this case, the segment information may include the elevation designated for each segment. Furthermore, for example, the segmentation unit 120 may generate segment setting information for identifying each segment by receiving designation of a structure, part, etc. of each segment of the bridge BR. The designation of the parts constituting a segment may be performed, for example, by displaying a three-dimensional image of the bridge BR on the output unit 180 (described later) and designating members, areas, etc. on the three-dimensional image. The segmentation unit 120 may then store the generated segment setting information in the storage unit 110.

[0073] (Regarding the setting unit 130) The setting unit 130, for example, receives from the user a designation of a period and a range related to the bridge BR to be evaluated. The setting unit 130, for example, stores the designated period and range as period information and range information, respectively, in the storage unit 110. The range set for the bridge BR may include, for example, a first range and at least one second range.

[0074] 7 is a diagram showing an example of the configuration of a screen for the user to specify a period and range. For example, as shown in FIG. 7, the setting unit 130 receives specification of the start and end of the period from the user.

[0075] Also, for example, an SAR image, which is a two-dimensional image of the bridge BR to be evaluated, is displayed on the output unit 180, which will be described later. Then, the setting unit 130 accepts the designation of each of the first range and the second range in the two-dimensional image of the bridge BR, as shown in Fig. 7. The figure shows an example in which one first range and three second ranges are designated as rectangular ranges.

[0076] The shape of the specified range is not limited to a rectangle and may be any suitable shape. The number of specified first ranges is not limited to one and may be multiple. The number of specified second ranges is not limited to three, as long as it is one or more.

[0077] (Regarding the selection unit 140) The selection unit 140 selects, for example, from the displacement information pre-stored in the memory unit 110, multiple pieces of displacement information including the displacement amounts of each of multiple measurement points included in a pre-set period and a set range for the bridge BR.

[0078] In detail, for example, the selection unit 140 selects a plurality of pieces of displacement information from the displacement information pre-stored in the storage unit 110, using the period information and range information set by the setting unit 130 and stored in the storage unit 110. The selected plurality of pieces of displacement information is displacement information in which, in the measurement point information pre-stored in the storage unit 110, a measurement time included in the period indicated by the period information is associated with the position of the measurement point included in the range indicated by the range information.

[0079] The selection unit 140 may include, for example, a first selection unit 141 and a second selection unit, as shown in Fig. 8. The first selection unit 141 and the second selection unit select a plurality of pieces of displacement information relating to the first range and the second range, respectively.

[0080] The first selection unit 141 selects, for example, from the displacement information pre-stored in the memory unit 110, a plurality of displacement information including the displacement amounts of each of a plurality of measurement points included in a pre-set period and a first range set for the bridge BR as a plurality of first displacement information.

[0081] The second selection unit 142 selects, for example, from the displacement information pre-stored in the memory unit 110, a plurality of displacement information including the displacement amounts of each of a plurality of measurement points included in a pre-set period and a second range set for the bridge BR as a plurality of second displacement information.

[0082] (Regarding the calculation unit 150) The calculation unit 150 calculates a correlation index value representing the correlation for at least one segment included in the set range, for example, based on the selected displacement information and environmental information indicating the state of the environment around the set range.

[0083] The correlation index value is a value of an index (correlation index) that represents the correlation between a value based on the displacement amount contained in the selected plurality of displacement information (displacement amount in this embodiment) and the environmental state value of the environment surrounding the measurement point.

[0084] The correlation index value is, for example, a correlation coefficient. In this case, the correlation index value is, for example, a value obtained by dividing the covariance between variables X and Y by the product of the standard deviation of variable X and the standard deviation of variable Y. Here, a value based on a displacement (the displacement in this embodiment) may be used for variable X. An environmental state value may be used for variable Y.

[0085] The calculation unit 150 may include an integration unit 153, a first index calculation unit 154, and a second index calculation unit 155, for example, as shown in FIG.

[0086] The integrating unit 153 integrates, for each segment, the displacement information including the displacement amounts of the measurement points included in the second range during the period, to generate integrated displacement information including the displacement amounts of the measurement points for each segment. Here, only one second range may be set. That is, the integrating unit 153 integrates, for each segment, the displacement information including the displacement amounts of the measurement points included in at least one second range during the period, to generate integrated displacement information including the displacement amounts of the measurement points for each segment.

[0087] The integrated displacement information can also be said to be information obtained by reconstructing the displacement information of the measurement points included in the second range so that they are grouped by segment. For example, integrated displacement information corresponding to each segment of the upper structure portion P1, the road portion P2, and the lower structure portion P3 is generated. Each piece of integrated displacement information includes one or more pieces of displacement information.

[0088] The first index calculation unit 154 calculates a first index value for each segment to which the measurement points included in the first range belong, based on the displacement information of the measurement points included in the first range during the period and the environmental information. Here, the measurement points included in the first range may belong to all or some of multiple segments, or may belong to only one segment. In other words, the first index calculation unit 154 calculates a first index value for at least one segment, based on the displacement information of the measurement points included in the first range during the period and the environmental information.

[0089] The second index calculation unit 155 calculates a second index value for each segment based on the integrated displacement information for each segment in the period and the environmental information. Here, the second index calculation unit 155 only needs to calculate the second index value for at least the segment for which the first index value was calculated. That is, the second index calculation unit 155 calculates the second index value for at least one segment based on the integrated displacement information for each segment in the period and the environmental information.

[0090] Fig. 10 is a diagram showing an example of a box plot showing the correlation between the displacement amount and the environmental condition value (temperature difference in this embodiment). The figure shows a box plot showing the correlation between the displacement amount and the environmental condition value for each segment to which the measurement points included in the second range belong, and corresponds to the classification of measurement points shown in Fig. 6. In the example of Fig. 10, a positive correlation is shown for each of the upper structure portion P1 and the road portion P2.

[0091] (Regarding the generation unit 160) The generation unit 160 generates judgment conditions for evaluating the soundness of the structure for each segment, for example, based on the second index value for each segment. The generation unit 160 generates judgment conditions for the segments corresponding to each second index value, based on each second index value. For example, assume that second index values ​​have been calculated for the upper structure portion P1, the road portion P2, and the lower structure portion P3. The generation unit 160 generates judgment conditions for the upper structure portion P1 based on the second index value for the upper structure portion P1. The generation unit 160 generates judgment conditions for the road portion P2 based on the second index value for the road portion P2. The generation unit 160 generates judgment conditions for the lower structure portion P3 based on the second index value for the lower structure portion P3.

[0092] Here, a second index value for one segment may be calculated, and a judgment condition for the one segment may be generated based on the second index value. Alternatively, second index values ​​for multiple segments may be calculated, and judgment conditions for the multiple segments may be generated based on each of the multiple second index values. That is, the generation unit 160 may generate a judgment condition for evaluating the soundness of the structure for at least one segment based on the correlation index value of the at least one segment. Alternatively, the judgment condition for the at least one segment may be generated based on the second index value for the at least one segment.

[0093] The judgment conditions may include, for example, upper and lower limits of a range of values ​​that the second index value can take when the structure (bridge BR in this embodiment) for which the second range is set is normal. The upper and lower limits of this range may be calculated by the generation unit 160 based on statistical values ​​of the second index value (for example, the mean value and standard deviation), or may be the mean value ± 1.5 × standard deviation. This is an example of a judgment condition based on the statistical concept of a confidence interval. Note that the judgment conditions are not limited to those exemplified here, and the value 1.5, for example, may be changed as appropriate.

[0094] (Regarding the evaluation unit 170) The evaluation unit 170 evaluates the health of each corresponding segment using, for example, the judgment condition for each segment, and then generates, for example, information indicating the result of the evaluation of each segment.

[0095] For example, the evaluation unit 170 evaluates the health of each segment included in the first range using the judgment condition and the first index value for each segment. In evaluating the health of each segment, for example, the judgment condition and the first index value for the corresponding segment are used.

[0096] Here, judgment conditions for one or more segments may be generated. That is, the evaluation unit 170 may evaluate the soundness of the structure using the judgment condition for at least one segment. Furthermore, the number of segments to which the measurement points included in the first range belong may be one or more. That is, the evaluation of the soundness of the structure may be performed for at least one segment included in the first range using the judgment condition for the corresponding segment.

[0097] The evaluation result may include, for example, whether or not the segment is normal. For example, if the determination condition includes an upper limit and a lower limit of a range as described above, the evaluation unit 170 may evaluate the segment corresponding to the first index value as normal if the first index value is within the range of the upper limit and the lower limit. Also, for example, the evaluation unit 170 may evaluate the segment corresponding to the first index value as not normal (or abnormal) if the first index value is outside the range of the upper limit and the lower limit. Note that the evaluation result is not limited to the above example. For example, if the segment is not normal, the evaluation unit 170 may generate a value indicating the degree (level) of abnormality as the evaluation result, depending on the magnitude of the difference between the first index value and the upper limit or the lower limit of the range of values ​​included in the determination condition.

[0098] (output unit 180) The output unit 180 outputs various types of information. For example, the output unit 180 displays the various types of information.

[0099] The various types of information may include, for example, one or more of the information stored in the information processing device 100, information acquired by setting, generating, calculating, etc. in the information processing device 100, etc. For example, the information output (displayed) by the output unit 180 may include an SAR image including the bridge BR to be evaluated, a first range and a second range set for the image, and measurement points included in each range. Furthermore, for example, the information output (displayed) by the output unit 180 may include a judgment condition for each segment, a first index value for each segment, an evaluation result for each segment, etc. The information output (displayed) by the output unit 180 may be one or more of the information exemplified here.

[0100] The method by which the output unit 180 outputs information is not limited to display. The output unit 180 may transmit various pieces of information to another device. The other device may be, for example, a terminal device used by a user, a server device that receives and manages or uses the transmitted information, or a display or the like provided outside the information processing device 100.

[0101] (Detailed processing operation example of information processing device 100) The information processing device 100 may execute information processing as shown in Fig. 11. This information processing is started, for example, when measurement point information, structure information, etc. are stored in advance in the storage unit 110 and a predetermined instruction is received from a user. Note that the trigger for starting the information processing is not limited to this.

[0102] As described above, the segmentation unit 120 divides the plurality of measurement points included in the structure in the two-dimensional image into segments based on the three-dimensional position information of the plurality of measurement points (step S120).

[0103] The setting unit 130 receives the designation of the period and the range related to the bridge BR to be evaluated (step S130).

[0104] As described above, the selection unit 140 selects a plurality of pieces of displacement information including the displacement amounts of the respective measurement points included in the preset period and the range set for the structure (step S140).

[0105] As described above, the calculation unit 150 calculates a correlation index value representing the correlation for at least one segment included in the set range based on the selected displacement information and environmental information indicating the state of the environment around the set range (step S150).

[0106] As described above, the generating unit 160 generates a judgment condition for evaluating the soundness of the structure for at least one segment based on the index value of the at least one segment (step S160).

[0107] The evaluation unit 170 evaluates the soundness of the structure using the judgment condition for at least one segment (step S170).

[0108] The output unit 180 displays the evaluation results and the like (step S180).

[0109] The details of each process may be processes corresponding to the functions described above for the functional units that perform each process (segmentation unit 120, setting unit 130, selection unit 140, calculation unit 150, generation unit 160, evaluation unit 170, and output unit 180).

[0110] (Example of physical configuration of information processing device 130) As shown in FIG. 12, the information processing device 130 physically includes, for example, a bus 1010, a processor 1020, a memory 1030, a storage device 1040, a network interface 1050, an input interface 1060, and an output interface 1070.

[0111] The bus 1010 is a data transmission path for transmitting and receiving data among the processor 1020, memory 1030, storage device 1040, network interface 1050, input interface 1060, and output interface 1070. However, the method of connecting the processor 1020 and other components to each other is not limited to bus connection.

[0112] The processor 1020 is implemented by a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), or the like.

[0113] The memory 1030 is a main storage device realized by a RAM (Random Access Memory) or the like.

[0114] The storage device 1040 is an auxiliary storage device realized by a hard disk drive (HDD), a solid state drive (SSD), a memory card, a read only memory (ROM), etc. The storage device 1040 stores program modules for realizing the functions of the information processing device 100 that includes the storage device 1040. The processor 1020 reads each of these program modules into the memory 1030 and executes them, thereby realizing the function corresponding to the program module.

[0115] The network interface 1050 is an interface for connecting the information processing device 130 equipped with the network interface 1050 to the network NT.

[0116] The input interface 1060 is an interface for the user to input information, and is configured from, for example, a touch panel, a keyboard, a mouse, and the like.

[0117] The output interface 1070 is an interface for presenting information to the user, and is configured, for example, by a liquid crystal panel, an organic EL (Electro-Luminescence) panel, or the like.

[0118] Note that the physical configuration of the information processing device 100 is not limited to this. For example, the information processing device 100 may be composed of multiple devices. In this case, each device may be, for example, a computer or the like having a physical configuration similar to that of the information processing device 100 shown in FIG. 12.

[0119] (Actions and Effects) As described above, according to this embodiment, the information processing device 100 includes the segmentation unit 120, the selection unit 140, the calculation unit 150, and the generation unit 160.

[0120] The segmentation unit 120 divides the structure into segments based on the three-dimensional position information of the measurement points included in the structure in the two-dimensional image. The selection unit 140 selects multiple pieces of displacement information including the displacement amounts of the measurement points included in a predetermined period and a predetermined range for the structure. The calculation unit 150 calculates a correlation index value representing the correlation for at least one segment included in the set range based on the selected displacement information and environmental information indicating the state of the environment around the set range. The generation unit 160 generates a judgment condition for evaluating the soundness of the structure for the at least one segment based on the index value of the at least one segment.

[0121] This allows the multiple measurement points to be divided into segments of the structure, and judgment conditions for each segment can be generated, thereby enabling the generation of judgment conditions that can accurately evaluate the soundness of the structure.

[0122] According to this embodiment, the information processing device 100 includes an evaluation unit 170 that evaluates the soundness of a structure using a judgment condition for at least one segment. The set ranges are multiple and include a first range to be evaluated and at least one second range for generating the judgment condition. The correlation index values ​​are multiple and include a first index value for at least one segment included in the first range and a second index value for at least one segment included in the at least one second range. The judgment condition for at least one segment is generated based on the second index value for the at least one segment. Evaluating the soundness of the structure is performed for at least one segment included in the first range using the judgment condition for the corresponding segment.

[0123] This allows the soundness of each segment to which the measurement points included in the first range belong to to be evaluated using the judgment conditions generated based on the second index value, thereby enabling the soundness of the structure to be evaluated with high accuracy.

[0124] According to this embodiment, the calculation unit 150 includes an integration unit 153, a first index calculation unit 154, and a second index calculation unit 155.

[0125] The integrating unit 153 integrates, for each segment, displacement information including displacement amounts of measurement points included in at least one second range during the period to generate integrated displacement information including displacement amounts of measurement points for each segment. The first index calculating unit 154 calculates a first index value for at least one segment based on the displacement information of measurement points included in the first range during the period and environmental information. The second index calculating unit 155 calculates a second index value for at least one segment based on the integrated displacement information for each segment during the period and environmental information.

[0126] This allows the generation of a judgment condition for each segment based on the second index value, thereby enabling the generation of a judgment condition that can accurately evaluate the soundness of a structure.

[0127] Furthermore, using this judgment condition, it is possible to evaluate the soundness of each segment to which the measurement points included in the first range belong, thereby enabling the soundness of the structure to be evaluated with high accuracy.

[0128] (Embodiment 2) In the first embodiment, an example was described in which the value based on the displacement used to calculate the correlation index value is the displacement. In the present embodiment, an example will be described in which the value based on the displacement is a corrected displacement obtained by correcting the displacement using a displacement model.

[0129] (Example of functional configuration of information processing device 200) 13 , the information processing device 200 includes a storage unit 210 and a calculation unit 250 that replace the above-described storage unit 110 and calculation unit 150, respectively. The information processing device 200 further includes, for example, the segmentation unit 120, setting unit 130, selection unit 140, generation unit 160, evaluation unit 170, and output unit 180 that are similar to those described above. The information processing device 200 further includes, for example, a model selection unit 290.

[0130] (Regarding the storage unit 210) The storage unit 210 may store, for example, the information stored in the above-mentioned storage unit 110. The storage unit 210 may further store, in advance, displacement model information including a displacement model.

[0131] The displacement model is a model that represents the relationship between displacement information (e.g., displacement amount) and environmental information (e.g., environmental state value). The displacement model may be a mathematical model expressed using a linear equation, a piecewise linear equation, a polynomial, an exponential function, a trigonometric function, or the like. The displacement model may also include one or more parameters.

[0132] The mathematical model may be created by various methods. For example, the mathematical model may be created based on experimental results, simulation results, or theoretically. The mathematical model may also be created using machine learning.

[0133] There may be multiple displacement models. The multiple displacement models may include different displacement models according to the type of segment. For example, suppose a segment has an upper structure portion P1, a road portion P2, and a lower structure portion P3, where the upper structure portion P1 is a truss structure, the road portion P2 is a box-shaped structure, and the lower structure portion P3 is a column-shaped structure. The multiple displacement models may include displacement models according to various structures such as a truss structure, a box-shaped structure, and a column-shaped structure. Note that the multiple displacement models are not limited to different displacement models associated with structures, and may include, for example, displacement models associated with various application conditions. The application conditions may include, for example, one or more elements related to the characteristics of the structure, such as the structure and material.

[0134] (Regarding the model selection unit 290) The model selection unit 290 selects a displacement model that represents the relationship between the displacement information and the environmental information based on the structural information that indicates the structure of the structure.

[0135] For example, the model selection unit 290 selects a displacement model based on structural information of a bridge BR, which is a structure for which a first range and a second range are set. The model selection unit 290 may select a displacement model to be applied to each segment based on, for example, the structural information of the bridge BR and application conditions associated with the displacement model.

[0136] In more detail, for example, the structural information for each segment of the bridge BR includes a truss structure, a box-like structure, and a column-like structure for each of the upper structural portion P1, the road portion P2, and the lower structural portion P3. Also, assume that multiple pieces of displacement model information, each of which includes the truss structure, the box-like structure, and the column-like structure in its application conditions, are stored in the storage unit 210.

[0137] In this case, the model selection unit 290 may select, for the upper structure portion P1, displacement model information that includes a truss structure in its application conditions, i.e., a displacement model associated with application conditions that include a truss structure. Similarly, for the road portion P2, the model selection unit 290 may select a displacement model associated with application conditions that include a box-shaped structure. For the lower structure portion P3, the model selection unit 290 may select a displacement model associated with application conditions that include a columnar structure.

[0138] The method by which the model selection unit 290 selects a displacement model is not limited to the example given here.

[0139] (Regarding the calculation unit 250) The calculation section 250 generates corrected displacement information using, for example, the selected displacement model and displacement information within a set range in the period, and calculates a correlation index value based on the corrected displacement information and environmental information.

[0140] 14, the calculation unit 250 includes a correction unit 251 and an index calculation unit 252. The index calculation unit 252 includes an integrating unit 253, a first index calculation unit 254, and a second index calculation unit 255, which replace the above-mentioned integrating unit 153, first index calculation unit 154, and second index calculation unit 155, respectively.

[0141] (Regarding the correction unit 251) The correction unit 251 generates corrected displacement information using, for example, the selected displacement model and the displacement information within the set range for the period. The corrected displacement information includes, for example, a corrected displacement amount obtained by correcting the displacement amount included in the displacement information using the selected displacement model.

[0142] For example, the correction unit 251 determines the value of a parameter included in the displacement model of the corresponding segment using the displacement amount of the measurement point of each segment included in the first range during the set period and the environmental state value (for example, temperature difference) at the corresponding time. Also, for example, the correction unit 251 determines the value of a parameter included in the displacement model of the corresponding segment using the displacement amount of the measurement point of each segment included in the second range during the set period and the environmental state value (for example, temperature difference) at the corresponding time.

[0143] At this time, the correction unit 251 may determine the parameters included in the displacement model using, for example, the least squares method, etc. Note that the method for determining the values ​​of the parameters included in the displacement model is not limited to the least squares method.

[0144] The correction unit 251 calculates a corrected displacement amount by correcting the displacement amount of the measurement point belonging to the corresponding segment, for example, using a displacement model of each segment for which parameters have been determined. For example, the correction unit 251 calculates the corrected displacement amount by substituting an environmental state value (for example, a temperature difference) corresponding to the measurement point into the displacement model for which parameters have been determined.

[0145] (Regarding the index calculation unit 252) The index calculation unit 252 calculates a correlation index value based on the corrected displacement information of the set range in the period and the environmental information indicating the state of the environment around the set range. As described above, the index calculation unit 252 may include the integration unit 253, the first index calculation unit 254, and the second index calculation unit 255.

[0146] The integrating unit 253 uses a corrected displacement amount instead of the displacement amount used by the above-described integrating unit 153. The first index calculating unit 254 uses corrected displacement information (corrected displacement amount) instead of the displacement information (displacement amount) used by the above-described first index calculating unit 154. The second index calculating unit 255 uses integrated displacement information generated using the corrected displacement amount as the integrated displacement information used by the above-described first index calculating unit 154.

[0147] Except for these points, the integration unit 253, the first index calculation unit 254, and the second index calculation unit 255 may have the same functions as the above-mentioned integration unit 153, the first index calculation unit 154, and the second index calculation unit 155, respectively.

[0148] Although the example described here illustrates the calculation of corrected displacement amounts obtained by correcting the displacement amounts of measurement points included in the first and second ranges, the corrected displacement amounts may be calculated only for measurement points included in either the first or second range. Furthermore, when multiple second ranges are set, the parameter values ​​included in the displacement model of each segment may be determined for each second range, or the parameter values ​​included in the displacement model of each segment may be determined by integrating multiple second ranges. For example, when corrected displacement amounts are calculated only for the first range, the index calculation unit 252 may include an integration unit 153 and a second index calculation unit 155 that use uncorrected displacement amounts for second ranges for which corrected displacement amounts have not been calculated. For example, when corrected displacement amounts are calculated only for the second range, the index calculation unit 252 may include a first index calculation unit 154 that uses uncorrected displacement amounts for first ranges for which corrected displacement amounts have not been calculated.

[0149] (Detailed processing operation example of information processing device 200) The information processing device 200 may execute information processing as shown in Fig. 15. This information processing is started, for example, when measurement point information, structure information, etc. are stored in advance in the storage unit 210 and a predetermined instruction is received from the user. Note that the trigger for starting the information processing is not limited to this.

[0150] Steps S120, S130, and S140 are executed in the same manner as described above.

[0151] The model selection unit 290 selects a displacement model that represents the relationship between the displacement information and the environmental information based on the structural information that indicates the structure of the structure (step S290).

[0152] The calculation unit 250 generates corrected displacement information using the selected displacement model and displacement information within the set range for the period, and calculates a correlation index value based on the corrected displacement information and environmental information (step S250).

[0153] Steps S160, S170, and S180 are executed in the same manner as described above.

[0154] The details of each process may be processes corresponding to the functions described above for the functional units that perform each process (segmentation unit 120, setting unit 130, selection unit 140, model selection unit 290, calculation unit 250, generation unit 160, evaluation unit 170, and output unit 180).

[0155] (Actions and Effects) As described above, according to this embodiment, the information processing device 200 includes the model selection unit 290 that selects a displacement model that represents the relationship between displacement information and environmental information based on structural information that indicates the structure of a structure. The calculation unit 250 includes a correction unit 251 and an index calculation unit 252. The correction unit 251 generates corrected displacement information using the selected displacement model and displacement information for a set range in a period. The index calculation unit 252 calculates a correlation index value based on the corrected displacement information for a set range in a period and environmental information indicating the state of the environment around the set range.

[0156] According to this, the soundness of the structure can be evaluated using the corrected displacement amount obtained by correcting the measured displacement amount, thereby enabling the soundness of the structure to be evaluated with high accuracy.

[0157] According to this embodiment, the corrected displacement information includes a corrected displacement amount obtained by correcting the displacement included in the displacement information using the selected displacement model.

[0158] According to this, the soundness of the structure can be evaluated using the corrected displacement amount obtained by correcting the measured displacement amount, thereby enabling the soundness of the structure to be evaluated with high accuracy. (Variation 1) In the second embodiment, an example has been described in which a corrected displacement amount is used as a value based on a displacement amount, but a determined parameter value may also be used as a value based on a displacement amount. The corrected displacement information according to this modification includes, for example, a parameter value, which is a value of a parameter included in a selected displacement model, determined based on a displacement amount included in the displacement information. In this case, the information processing device 200 may have a function of replacing the corrected displacement amount in the second embodiment with the determined parameter value (parameter value). The information processing device 200 may execute processing in which the corrected displacement amount in the second embodiment is replaced with the determined parameter value (parameter value).

[0159] According to this embodiment, the corrected displacement information includes parameter values ​​that are values ​​of parameters included in the selected displacement model, determined based on the displacement amount included in the displacement information.

[0160] According to this, the soundness of the structure can be evaluated using the parameter value, which is a value equivalent to the corrected displacement amount in embodiment 2. Therefore, it becomes possible to evaluate the soundness of the structure with high accuracy.

[0161] (Embodiment 3) In evaluating the soundness of a structure, the evaluation may be performed by excluding, for example, one or more measurement points included in an area outside of interest (out-of-interest area) designated by the user.

[0162] (Example of functional configuration of information processing device 300) 16 , the information processing device 300 includes the above-mentioned storage unit 110, setting unit 130, calculation unit 150, generation unit 160, evaluation unit 170, and output unit 180. The information processing device 300 also includes a segmentation unit 320 instead of the above-mentioned segmentation unit 120 and selection unit 140, and a selection unit 340. The information processing device 300 further includes an exclusion unit 395.

[0163] The exclusion unit 395 excludes measurement points included in an out-of-interest area from a plurality of measurement points included in a structure in a two-dimensional image, for example, in accordance with a user's instruction. For example, the exclusion unit 395 excludes measurement points included in an out-of-interest area from measurement points included in a bridge BR that is the evaluation target. The out-of-interest area may be specified in segment units, may be specified using an area, or may be specified for each measurement point. Note that the method of specifying an out-of-interest area is not limited to the example given here.

[0164] The segmentation unit 320 divides the multiple measurement points into segments of the structure, for example, based on the three-dimensional position information of the multiple measurement points remaining after being excluded from the multiple measurement points included in the structure in the two-dimensional image.

[0165] The selection unit 340 selects, from the plurality of measurement points remaining after excluding them, a plurality of pieces of displacement information including the displacement amounts of the plurality of measurement points included in a predetermined period and a range set for the structure.

[0166] In this way, the segmentation unit 320 and the selection unit 340 may have a function in which, for example, the "multiple measurement points" in the description of the first embodiment is replaced with "multiple measurement points after being excluded."

[0167] (Example of processing operation of information processing device 300) The information processing device 300 may execute information processing as shown in Fig. 17. This information processing is started, for example, when measurement point information, structure information, etc. are stored in advance in the storage unit 110 and a predetermined instruction is received from the user. Note that the trigger for starting the information processing is not limited to this.

[0168] The exclusion unit 395 excludes measurement points included in a non-interest area from a plurality of measurement points included in a structure in a two-dimensional image, for example, in accordance with an instruction from a user (step S395).

[0169] The segmentation unit 320 divides the multiple measurement points into segments of the structure, for example, based on the three-dimensional position information of the multiple measurement points after being excluded from the multiple measurement points included in the structure in the two-dimensional image (step S320).

[0170] The above-mentioned step S130 is executed.

[0171] The selection unit 340 selects, from the plurality of measurement points after excluding them, a plurality of pieces of displacement information including the displacement amounts of the plurality of measurement points included in the predetermined period and the range set for the structure (step S340).

[0172] The above-described steps S150, S160, S170, and S180 are executed.

[0173] (Actions and Effects) As described above, according to this embodiment, the information processing device 300 includes an exclusion unit 395 that excludes measurement points included in an out-of-interest area from a plurality of measurement points included in a structure in a two-dimensional image in accordance with a user's instruction. The selection unit 340 selects, from the plurality of measurement points after exclusion, a plurality of pieces of displacement information including the amount of displacement of each of a plurality of measurement points included in a predetermined period and a range set for the structure.

[0174] This allows the generation of judgment conditions for evaluating the soundness of a structure by excluding measurement points included in areas that the user does not want to include, making it possible to generate judgment conditions that can accurately evaluate the soundness of a structure.

[0175] Furthermore, the soundness of the structure can be evaluated using the judgment conditions generated by excluding measurement points included in areas that the user does not want to include, thereby enabling the soundness of the structure to be evaluated with high accuracy.

[0176] Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above-described embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present disclosure within the scope of the present disclosure. Furthermore, each embodiment can be combined with other embodiments as appropriate.

[0177] In addition, although the flowcharts used in the above description show multiple steps (processes) in a sequential order, the order of the steps executed in each embodiment is not limited to the order shown. In each embodiment, the order of the steps shown in the drawings can be changed as long as it does not cause any problems in terms of the content.

[0178] Some or all of the above-described embodiments can be described as, but are not limited to, the following supplementary notes.

[0179] Below, examples of reference forms are given. 1. a segmentation means for dividing a plurality of measurement points included in a structure in a two-dimensional image into segments of the structure based on three-dimensional position information of the measurement points; a selection means for selecting a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in a predetermined period and a predetermined range for the structure; a calculation means for calculating a correlation index value representing a correlation for at least one of the segments included in the set range based on the selected displacement information and environmental information indicating an environmental state around the set range; and a generating means for generating a judgment condition for evaluating the soundness of the structure for the at least one segment based on the correlation index value of the at least one segment. Information processing device. 2. further comprising an evaluation means for evaluating the soundness of the structure using the judgment condition for the at least one segment; the set ranges are plural and include a first range to be evaluated and at least one second range for generating the judgment condition; the correlation index values ​​are multiple and include a first index value for the at least one segment that falls within the first range and a second index value for the at least one segment that falls within the at least one second range; the determination condition for the at least one segment is generated based on a second index value for the at least one segment; The evaluation of the soundness of the structure is performed for each of the at least one segment included in the first range using the judgment condition for the corresponding segment. 1. An information processing device according to claim 1. 3. The calculation means an integration means for integrating, for each segment, displacement information including displacement amounts of measurement points included in the at least one second range during the period, to generate integrated displacement information including displacement amounts of measurement points for each segment; a first index calculation means for calculating the first index value for the at least one segment based on the displacement information of the measurement points included in the first range during the period and the environmental information; and second index calculation means for calculating a second index value for the at least one segment based on the integrated displacement information for each segment during the period and the environmental information. 2. An information processing device according to the present invention. 4. a model selection unit that selects a displacement model that represents a relationship between the displacement information and the environmental information based on structural information that indicates a structure of the structure; The calculation means a correction means for generating corrected displacement information using the selected displacement model and the displacement information within the set range for the period; and an index calculation means for calculating the correlation index value based on the corrected displacement information of the set range during the period and environmental information indicating the state of the environment around the set range. 1. An information processing device according to any one of 1. to 3. 5. The displacement model is a plurality of models, The plurality of displacement models include different displacement models according to the types of the segments. 4. An information processing device according to the present invention. 6. The corrected displacement information includes a corrected displacement amount obtained by correcting the displacement included in the displacement information using the selected displacement model, or a parameter value that is a value of a parameter included in the selected displacement model and is determined based on the displacement included in the displacement information. 4. An information processing device according to 4. or 5. 7. further comprising an exclusion means for excluding the measurement points included in an out-of-interest area from the plurality of measurement points included in the structure in the two-dimensional image in accordance with a user's instruction, The selection means selects, from the plurality of measurement points after the exclusion, a plurality of pieces of displacement information including the displacement amounts of the plurality of measurement points included in the predetermined period and the range set for the structure. 10. An information processing device according to any one of 1. to 6.

[0180] 8. One or more computers based on three-dimensional position information of a plurality of measurement points included in a structure in a two-dimensional image, classifying the plurality of measurement points into segments of the structure; selecting a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in a predetermined period and a predetermined range for the structure; calculating a correlation index value representing a correlation for at least one of the segments included in the set range based on the selected displacement information and environmental information indicating an environmental state around the set range; generating a judgment condition for evaluating the soundness of the structure for the at least one segment based on the correlation index value of the at least one segment; Information processing methods. 9. further evaluating the health of the structure using the judgment condition for the at least one segment; the set ranges are plural and include a first range to be evaluated and at least one second range for generating the judgment condition; the correlation index values ​​are multiple and include a first index value for the at least one segment that falls within the first range and a second index value for the at least one segment that falls within the at least one second range; the determination condition for the at least one segment is generated based on a second index value for the at least one segment; The evaluation of the soundness of the structure is performed for each of the at least one segment included in the first range using the judgment condition for the corresponding segment. 8. The information processing method described in paragraph 1. 10. Calculating the correlation index value integrate displacement information for each segment, the displacement information including the displacement amounts of the measurement points included in the at least one second range during the period, to generate integrated displacement information including the displacement amounts of the measurement points for each segment; calculating the first index value for the at least one segment based on the displacement information of the measurement points included in the first range during the period and the environmental information; calculating a second index value for the at least one segment based on the integrated displacement information for each segment during the period and the environmental information; 9. The information processing method described in paragraph 9. 11. further selecting a displacement model that represents a relationship between the displacement information and the environmental information based on structural information that indicates a structure of the structure; Calculating the correlation index value generating corrected displacement information using the selected displacement model and the displacement information within the set range for the period; calculating the correlation index value based on the corrected displacement information of the set range during the period and environmental information indicating the state of the environment around the set range. An information processing method according to any one of items 8 to 10. 12. The displacement model is a plurality of models, The plurality of displacement models include different displacement models according to the types of the segments. 11. The information processing method described above. 13. The corrected displacement information includes a corrected displacement amount obtained by correcting the displacement included in the displacement information using the selected displacement model, or a parameter value that is a value of a parameter included in the selected displacement model and is determined based on the displacement included in the displacement information. 11. The information processing method according to 12. 14. Furthermore, in accordance with a user's instruction, the measurement points included in an out-of-interest area are excluded from the plurality of measurement points included in the structure in the two-dimensional image; Selecting the plurality of pieces of displacement information includes selecting, from the plurality of measurement points after the exclusion, a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in the predetermined period and the range set for the structure. An information processing method according to any one of items 8 to 13.

[0181] 15. On one or more computers, based on three-dimensional position information of a plurality of measurement points included in a structure in a two-dimensional image, classifying the plurality of measurement points into segments of the structure; selecting a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in a predetermined period and a predetermined range for the structure; calculating a correlation index value representing a correlation for at least one of the segments included in the set range based on the selected displacement information and environmental information indicating an environmental state around the set range; generating a judgment condition for evaluating the soundness of the structure for the at least one segment based on the correlation index value of the at least one segment. 16. further evaluating the health of the structure using the judgment condition for the at least one segment; the set ranges are plural and include a first range to be evaluated and at least one second range for generating the judgment condition; the correlation index values ​​are multiple and include a first index value for the at least one segment that falls within the first range and a second index value for the at least one segment that falls within the at least one second range; the determination condition for the at least one segment is generated based on a second index value for the at least one segment; The evaluation of the soundness of the structure is performed for each of the at least one segment included in the first range using the judgment condition for the corresponding segment. 15. The program described in. 17. Calculating the correlation index value integrate displacement information for each segment, the displacement information including the displacement amounts of the measurement points included in the at least one second range during the period, to generate integrated displacement information including the displacement amounts of the measurement points for each segment; calculating the first index value for the at least one segment based on the displacement information of the measurement points included in the first range during the period and the environmental information; calculating a second index value for the at least one segment based on the integrated displacement information for each segment during the period and the environmental information; 16. The program described in. 18. further selecting a displacement model that represents a relationship between the displacement information and the environmental information based on structural information that indicates a structure of the structure; Calculating the correlation index value generating corrected displacement information using the selected displacement model and the displacement information within the set range for the period; calculating the correlation index value based on the corrected displacement information of the set range during the period and environmental information indicating the state of the environment around the set range. 15. A program according to any one of 15. to 17. 19. The displacement model is a plurality of models, The plurality of displacement models include different displacement models according to the types of the segments. 18. The program described in. 20. The corrected displacement information includes a corrected displacement amount obtained by correcting the displacement included in the displacement information using the selected displacement model, or a parameter value that is a value of a parameter included in the selected displacement model and is determined based on the displacement included in the displacement information. 18. or 19. The program according to claim 18. twenty one. Furthermore, in accordance with a user's instruction, the measurement points included in an out-of-interest area are excluded from the plurality of measurement points included in the structure in the two-dimensional image; Selecting the plurality of pieces of displacement information includes selecting, from the plurality of measurement points after the exclusion, a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in the predetermined period and the range set for the structure. A program according to any one of 15. to 20. twenty two. A recording medium on which the program described in any one of 15. to 21. is recorded. [Explanation of symbols]

[0182] 100, 200, 300 Information processing equipment 110,210 Storage section 120,320 Segmentation Division 130 Setting section 130 Information processing equipment 140,340 Selection section 141 First Selection Section 142 Second Selection Section 150,250 Calculation section 153,253 Integrated Department 154,254 1st index calculation section 155,255 Second index calculation section 160 Generation part 170 Evaluation Department 180 Output section 251 Correction Unit 252 Indicator calculation section 290 Model Selection Section 395 Exclusion part BR Bridge P1 Upper structure P2 Road Department P3 lower structure

Claims

1. a segmentation means for dividing a plurality of measurement points included in a structure in a two-dimensional image into segments of the structure based on three-dimensional position information of the measurement points; a selection means for selecting a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in a predetermined period and a predetermined range for the structure; a calculation means for calculating a correlation index value representing a correlation for at least one of the segments included in the set range based on the selected displacement information and environmental information indicating an environmental state around the set range; and generating means for generating a judgment condition for evaluating the soundness of the structure for the at least one segment based on the correlation index value of the at least one segment. Information processing device.

2. further comprising an evaluation means for evaluating the soundness of the structure using the judgment condition for the at least one segment; the set ranges are plural and include a first range to be evaluated and at least one second range for generating the judgment condition; the correlation index values ​​are multiple and include a first index value for the at least one segment that falls within the first range and a second index value for the at least one segment that falls within the at least one second range; the determination condition for the at least one segment is generated based on a second index value for the at least one segment; The evaluation of the soundness of the structure is performed for each of the at least one segment included in the first range using the judgment condition for the corresponding segment. The information processing device according to claim 1 .

3. The calculation means an integration means for integrating, for each segment, displacement information including displacement amounts of measurement points included in the at least one second range during the period, to generate integrated displacement information including displacement amounts of measurement points for each segment; a first index calculation means for calculating the first index value for the at least one segment based on the displacement information of the measurement points included in the first range during the period and the environmental information; and second index calculation means for calculating a second index value for the at least one segment based on the integrated displacement information for each segment during the period and the environmental information. The information processing device according to claim 2 .

4. a model selection unit that selects a displacement model that represents a relationship between the displacement information and the environmental information based on structural information that indicates a structure of the structure; The calculation means a correction means for generating corrected displacement information using the selected displacement model and the displacement information within the set range for the period; and an index calculation means for calculating the correlation index value based on the corrected displacement information of the set range during the period and environmental information indicating the state of the environment around the set range. The information processing device according to claim 1 .

5. The displacement model is a plurality of models, The plurality of displacement models include different displacement models according to the types of the segments. The information processing device according to claim 4 .

6. The corrected displacement information includes a corrected displacement amount obtained by correcting the displacement included in the displacement information using the selected displacement model, or a parameter value that is a value of a parameter included in the selected displacement model and is determined based on the displacement included in the displacement information. The information processing device according to claim 4 .

7. an exclusion means for excluding the measurement points included in an out-of-interest area from the plurality of measurement points included in the structure in the two-dimensional image in accordance with a user's instruction, The selection means selects, from the plurality of measurement points after the exclusion, a plurality of pieces of displacement information including the displacement amounts of the plurality of measurement points included in the predetermined period and the range set for the structure. The information processing device according to claim 1 .

8. One or more computers dividing the plurality of measurement points into segments of the structure based on three-dimensional position information of the plurality of measurement points included in the structure in the two-dimensional image; selecting a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in a predetermined period and a predetermined range for the structure; calculating a correlation index value representing a correlation for at least one of the segments included in the set range based on the selected displacement information and environmental information indicating an environmental state around the set range; generating a judgment condition for evaluating the soundness of the structure for the at least one segment based on the correlation index value of the at least one segment; Information processing methods.

9. On one or more computers, dividing the plurality of measurement points into segments of the structure based on three-dimensional position information of the plurality of measurement points included in the structure in the two-dimensional image; selecting a plurality of pieces of displacement information including displacement amounts of the plurality of measurement points included in a predetermined period and a predetermined range for the structure; calculating a correlation index value representing a correlation for at least one of the segments included in the set range based on the selected displacement information and environmental information indicating an environmental state around the set range; generating a judgment condition for evaluating the soundness of the structure for the at least one segment based on the correlation index value of the at least one segment.

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