JP7447238B2 - Image display device, image display method, and program - Google Patents

Description

The present invention relates to an image display device, an image display method, and a program, and more particularly to an image display device, an image display method, and a program for displaying a three-dimensional model.

In recent years, when inspecting a structure, the structure is photographed using a digital camera (imaging device), and inspection work is performed based on the obtained inspection image. In such inspection work, a large number of inspection images are acquired in order to photograph various parts of the structure. We also proposed a display technology that grasps the mutual positional relationship between inspection images by arranging link points of inspection images at corresponding positions on a three-dimensional model that roughly represents the overall structure of the structure to be inspected. has been done.

For example, the technique described in Patent Document 1 describes that a three-dimensional model of a bridge and an inspection image are arranged in a corresponding positional relationship (FIG. 8(b)).

Japanese Patent Application Publication No. 2011-192270

In order to detect damage from an inspection image, the damage in the inspection image must be captured at a constant resolution. For example, inspection images are often taken at a subject distance of 1 to 2 meters from the wall of a structure. Therefore, the angle of view of the inspection image may be small relative to the damage location, and in this case, the user needs to track and observe the damage while moving the display area of the inspection image. On the other hand, an inspection image may have multiple damaged locations or have a complex shape, so it is difficult to accurately track and observe the damaged location when moving the display area. may be difficult.

The above-mentioned Patent Document 1 does not mention tracking the damage location of interest when the display area of the inspection image moves.

The present invention has been made in view of these circumstances, and its purpose is to track and observe the damaged area of interest without losing sight of it, even when the display area moves on a plane on a three-dimensional model. An object of the present invention is to provide an image display device, an image display method, and a program that can display images.

An image display device, which is one aspect of the present invention for achieving the above object, displays a three-dimensional model of all or part of a structure composed of inspection images taken of the structure, and a three-dimensional model of the structure in the inspection image. An image display device comprising a memory storing detection information of detected damage locations, a display section, and a processor, wherein the processor causes the display section to display the three-dimensional model stored in the memory; The designation of a part of the 3D model displayed on the 3D model is accepted, the part of the target plane of the 3D model that corresponds to the designated part is displayed on the display, and the damaged parts of the target plane are displayed. A selection of at least one damage location as a target damage location is accepted, and a display area of the target plane to be displayed on the display unit is moved along the shape of the target damage location based on the detection information.

According to this aspect, the display area of the target plane moves along the shape of the target damage location, so even if the display area of the target plane moves, the target damage location of interest can be tracked without losing sight of it. can be observed.

An image display device that is another aspect of the present invention provides a three-dimensional model of all or part of a structure that is composed of inspection images taken of the structure, and detection information that detects damaged locations of the structure in the inspection images. An image display device comprising a memory in which is stored, a display unit, and a processor, wherein the processor displays the three-dimensional model stored in the memory on the display unit, and displays the three-dimensional model displayed on the display unit. Upon receiving the designation of the damage location above, display a part of the target plane of the 3D model corresponding to the damage location on the display, and change the display area of the target plane to be displayed on the display based on the detected information. Move it along the shape of the target damaged area, which is the damaged area.

According to this aspect, the display area of the target plane moves along the shape of the target damage location, so even if the display area of the target plane moves, the target damage location of interest can be tracked without losing sight of it. can be observed.

Preferably, the processor causes the display unit to display the target plane facing directly.

Preferably, the processor causes the display unit to display the target plane at a constant magnification before and after moving the display area.

Preferably, the processor intermittently moves the display area by a set viewing angle within a viewing angle corresponding to one screen of the display unit, and positions a part of the target damaged area in the center of the display unit.

Preferably, the processor continuously moves the display area and positions a portion of the target damage location in the center of the display section.

Preferably, the processor causes the display unit to display a marker that moves along the target damaged location.

Preferably, the processor causes the display unit to display a marker that moves along the target damaged location, and moves the display area when the marker reaches an end of the set angle of view.

Preferably, the processor automatically moves the marker.

Preferably, the processor causes the display unit to display an enlarged image of a partial area of the target damaged location.

An image display method that is another aspect of the present invention provides a three-dimensional model of all or part of a structure that is composed of an inspection image taken of the structure, and detection information that detects a damaged part of the structure in the inspection image. An image display method using an image display device comprising a memory in which a 3D model is stored, a display section, and a processor, the method comprising: displaying a three-dimensional model stored in the memory on the display section, performed by the processor; , a step of accepting a designation of a part of the 3D model displayed on the display unit and displaying a part of the target plane of the 3D model corresponding to the designated location on the display unit; a step of receiving selection of at least one damaged point among the damaged points as a target damaged point; and a step of moving a display area of the target plane to be displayed on the display unit along the shape of the target damaged point based on the detection information. ,including.

An image display method that is another aspect of the present invention provides a three-dimensional model of all or part of a structure that is composed of an inspection image taken of the structure, and detection information that detects a damaged part of the structure in the inspection image. An image display method using an image display device comprising a memory in which a 3D model is stored, a display section, and a processor, the method comprising: displaying a three-dimensional model stored in the memory on the display section, performed by the processor; , a step of receiving a designation of a damaged location on the three-dimensional model displayed on the display section, and displaying a part of the target plane of the three-dimensional model corresponding to the damaged location on the display section; The method includes the step of moving the display area of the target plane along the shape of the target damage location, which is the damage location, based on the detection information.

A program that is another aspect of the present invention stores a three-dimensional model of all or part of a structure that is composed of inspection images taken of the structure, and detection information that detects damaged parts of the structure in the inspection images. A program for causing an image display device comprising a memory, a display unit, and a processor to perform an image display method, the program comprising: causing the processor to display a three-dimensional model stored in the memory on the display unit; a step of receiving a designation of a part of the three-dimensional model displayed on the display part and displaying a part of the target plane of the three-dimensional model corresponding to the designated part on the display part; and a step of displaying a damaged part on the target plane. a step of receiving selection of at least one of the damaged points as a target damaged point, and a step of moving a display area of the target plane to be displayed on the display unit along the shape of the target damaged point based on the detection information. Let it happen.

A program that is another aspect of the present invention stores a three-dimensional model of all or part of a structure that is composed of inspection images taken of the structure, and detection information that detects damaged parts of the structure in the inspection images. A program for causing an image display device comprising a memory, a display unit, and a processor to perform an image display method, the program comprising: causing the processor to display a three-dimensional model stored in the memory on the display unit; a step of receiving a designation of a damaged location on the three-dimensional model displayed on the display section, and displaying a part of the target plane of the three-dimensional model corresponding to the damaged location on the display section; A step of moving the display area of the target damage location along the shape of the target damage location, which is the damage location, based on the detected information.

According to the present invention, the plane display area of the three-dimensional model moves along the shape of the target damage location, so even if the target plane display area moves, the damage location of interest can be tracked without losing sight of it. can be observed.

FIG. 1 is a diagram showing an example of the main configuration of an image display device. FIG. 2 is a diagram showing an example of a three-dimensional model. FIG. 3 is a diagram showing an example of an inspection image. FIG. 4 is a diagram illustrating damage vectors. FIG. 5 is a diagram illustrating damage vectors. FIG. 6 is a diagram illustrating an image display method. FIG. 7 is a diagram showing a three-dimensional model. FIG. 8 is a diagram showing the display area displayed on the display unit. FIG. 9 is a diagram illustrating the first movement mode. FIG. 10 is a diagram illustrating the first movement mode. FIG. 11 is a diagram illustrating the second movement form. FIG. 12 is a diagram illustrating the second movement mode. FIG. 13 is a flow diagram showing an image display method. FIG. 14 shows an example of the main configuration of the image display device. FIG. 15 is a diagram showing an example of marker display. FIG. 16 is a diagram showing an example of marker display. FIG. 17 is a diagram illustrating an example of marker display and subwindow W display.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an image display device, an image display method, and a program according to the present invention will be described below with reference to the accompanying drawings.

<First embodiment>
FIG. 1 is a diagram showing an example of the main configuration of an image display device 1. As shown in FIG.

Image display device 1 is composed of a computer. The image display device 1 includes a device main body 11, a display section 21, and an operation section 23.

The device main body 11 includes a CPU (Central Processing Unit) 13, a memory 15, a display control section 17, and a reception section 19.

The CPU 13 performs general control of the image display device 1. The CPU 13 reads necessary programs and information used for various controls from the memory 15, and performs various processes and controls performed by the CPU 13. The CPU 13 executes a program to realize the display control section 17 and reception section 19.

The hardware structure of the CPU 13 includes various processors as shown below. Various types of processors include CPUs, which are general-purpose processors that execute software (programs) and act as various functional units, and programmable processors, which are processors whose circuit configuration can be changed after manufacturing, such as FPGAs (Field Programmable Gate Arrays). This includes dedicated electrical circuits such as logic devices (Programmable Logic Devices: PLDs) and ASICs (Application Specific Integrated Circuits), which are processors with circuit configurations specifically designed to execute specific processing.

One processing unit may be composed of one of these various processors, or may be composed of two or more processors of the same type or different types (for example, multiple FPGAs, or a combination of a CPU and FPGA). It's okay. Further, a plurality of functional units may be configured by one processor. As an example of configuring multiple functional units with one processor, first, one processor is configured with a combination of one or more CPUs and software, as typified by computers such as clients and servers. There is a form in which a processor acts as multiple functional units. Second, there are processors that use a single IC (Integrated Circuit) chip, such as System On Chip (SoC), which implements the functions of an entire system that includes multiple functional units. be. In this way, various functional units are configured using one or more of the various processors described above as a hardware structure.

The display unit 21 is composed of a monitor. The display unit 21 displays the three-dimensional model and the target plane specified on the three-dimensional model by the user under the control of the display control unit 17.

The reception unit 19 receives user commands via the operation unit 23. For example, the operation unit 23 is composed of a pointing device such as a mouse and a keyboard, and when the user inputs a command to the operation unit 23, the command is accepted by the reception unit 19.

The memory 15 stores programs necessary for the functions implemented by the CPU 13. The memory 15 also stores a three-dimensional model of all or part of the structure to be inspected, and detection information. The memory 15 also stores inspection images as necessary. Here, the inspection image is an image of a structure to be inspected. For example, the memory 15 stores a large number of inspection images taken comprehensively of the structure to be inspected.

The three-dimensional model is a model representing the entire structure of the structure to be inspected. For example, the three-dimensional shape of a three-dimensional model is created based on three-dimensional CAD (computer-aided design). In addition, an inspection image is pasted on the surface of the three-dimensional model. For example, a plurality of inspection images are combined into a panorama and pasted onto the surface of a three-dimensional model. Note that the location of the structure shown in the inspection image corresponds to the position on the three-dimensional model to which the inspection image is pasted. Therefore, the user can understand the mutual positional relationship of the inspection images using the three-dimensional model.

The detection information is information that detects a damaged part of the structure in the inspection image of the structure. For example, the detection information is acquired by image processing the inspection image, or by processing the inspection image with a recognizer that performs machine learning. Further, the damage location is a location where damage is located, for example, a location where damage such as cracks or exposed reinforcing bars is located. In addition, marks made by an inspection worker tracing a crack with chalk or the like are also included as damaged locations.

Next, the three-dimensional model stored in the memory 15 will be explained.

FIG. 2 is a diagram showing an example of a three-dimensional model displayed on the display unit 21.

The three-dimensional model N shown in FIG. 2 represents the entire structure of a column that is a structure. The column has a rectangular parallelepiped shape, and a panoramic composite inspection image is pasted on each surface (surface) of the rectangular parallelepiped. Specifically, a plurality of positionally corresponding inspection images are combined into a panorama and pasted onto the surface NA, surface NB, and surface NC of the three-dimensional model N. Therefore, by specifying a position on the three-dimensional model N and enlarging the display, the user can observe the inspection image of the column corresponding to that position. Note that if the damaged area B is large, the user can visually recognize the damaged area B on the 3-dimensional model N, and if the damaged area B is small, the user can specify the position on the 3-dimensional model and enlarge it. Damage location B can be visually recognized later. Note that the three-dimensional model N described above is an example, and other three-dimensional models are also used in the present invention. A point cloud model, a texture model, and a solid model are employed as the three-dimensional model representing the overall structure of the structure, and it is sufficient that the link points of the inspection image are arranged at least at corresponding positions.

Next, the detection information stored in the memory 15 will be explained.

FIG. 3 is a diagram showing an example of an inspection image. The inspection image 53 shown in FIG. 3 needs to be imaged at a resolution higher than a certain level from the viewpoint of detecting the damaged area using a recognition device that has been subjected to image processing or machine learning. The photograph is taken at a subject distance of 1 to 2 meters. The inspection image 53 shows a crack 55. The crack 55 is detected by a recognizer (segmentation recognizer) using image processing technology or machine learning. By detecting the crack 55, damage information about the crack 55 can be obtained. Here, the damage information includes various information regarding the detected damage location. For example, the damage information includes the shape of the damaged area, the degree of damage, the type of damage, the cause of damage, and the like. The damage information also includes a damage vector indicating the shape of the damage, which will be explained later.

4 and 5 are diagrams illustrating a damage vector that is an example of damage information of the detected crack 55. FIG. 4 is a diagram showing damage vectors generated based on the crack 55 superimposed on the inspection image 53, and FIG. 5 is a diagram showing the coordinates of points P1 to P7 indicating each damage vector. An example of a method for generating a damage vector based on the detected cracks 55 is as follows. First, the detected cracks 55 are binarized and/or thinned as necessary. Then, a starting point and an ending point are determined using a line segment that can be approximated by a straight line in the detected crack 55 as one section. Furthermore, if there is a branching point in the detected crack 55, a point is provided at the branching point. Note that other known techniques may be used to generate the damage vector based on the detected cracks 55.

The crack 55 consists of a vector C1-1 represented by a start point P1 and an end point P2, a vector C1-2 represented by a start point P2 and an end point P3, a vector C1-3 represented by a start point P3 and an end point P4, and a vector C1-3 represented by a start point P3 and an end point P4. A vector C1-4 is represented by P3 and an end point P5, a vector C1-5 is represented by a start point P3 and an end point P6, and a vector C1-6 is represented by a start point P6 and an end point P7. Note that P1 to P7 each have coordinates as shown in FIG. 5, and their positions on the inspection image 53 are specified.

Next, an image display method using the image display device 1 and a program for causing the image display device 1 to perform the image display method will be described.

FIG. 6 is a diagram illustrating an image display method performed using the image display device 1.

First, the display control section 17 causes the display section 21 to display the three-dimensional model M (see FIG. 7) stored in the memory 15 (step S10: three-dimensional model display step). Next, the accepting unit 19 accepts a designation of a part of the three-dimensional model M from the user via the operating unit 23 (step S11: target plane accepting process). The display control unit 17 causes the display unit 21 to display a part of the designated target plane (step S12: target plane display step). Thereafter, the reception unit 19 receives a selection of a target damage location from the user via the operation unit 23 (step S13: target damage reception step). Next, the display control unit 17 moves the display area of the target plane along the shape of the target damaged location (step S14: display area moving step).

Next, each of the above steps will be explained.

<3D model display process and target plane reception process>
In the three-dimensional model display step, the display control section 17 displays the three-dimensional model M on the display section 21 (step S10).

FIG. 7 is a diagram showing the three-dimensional model M displayed on the display unit 21.

The three-dimensional model M is a three-dimensional model representing the entire structure of a bridge, which is a structure. Inspection images obtained by photographing the bridge are pasted on each side of the three-dimensional model M in a panoramic composition. The three-dimensional model M can be freely rotated and the viewpoint can be moved.

In the target plane reception process, the reception unit 19 receives designation of the target plane from the user via the operation unit 23 (step S11).

The user uses the operation unit 23 to specify a location on the three-dimensional model M displayed on the display unit 21 that he or she wishes to observe in more detail. For example, when the user specifies a part of the target plane MA of the three-dimensional model M with the cursor 61 displayed on the display unit 21, a part of the area of the target plane MA is displayed on the display unit 21.

<Display process of target plane and reception process of target damaged area>
In the target plane display step, the display control unit 17 causes the display unit 21 to display a part of the display area 63 (hereinafter referred to as display area 63) of the target plane MA specified by the user (step S12).

FIG. 8 is a diagram showing the display area 63 displayed on the display section 21. As shown in FIG. A part of the display area 63 of the target plane MA is displayed enlarged when compared with the three-dimensional model M. Therefore, in the display area 63 of the three-dimensional model M, a target damaged location 65 corresponding to the crack 55 is displayed.

In the process of accepting the target damage location, the reception unit 19 receives selection of the target damage location from the user via the operation unit 23 (step S13). The user observes the display area 63 displayed on the display unit 21 and selects a target damage location to focus on and observe. In the case shown in FIG. 8, the target damage location 65 is selected with the cursor 61 and is selected as the target damage location.

<Display area movement process>
In the display area moving step, the display control unit 17 moves the display area of the target plane MA along the target damaged location 65 (step S14). The display area 63 has a small angle of view, and the entire target damage location 65 is not displayed. Therefore, the user observes the entire target damage location 65 while moving the display area of the target plane MA. The display area can be moved manually by the user or automatically. The movement form of the display area of the target plane MA will be explained below.

(First form of movement)
First, a first movement form of the display area of the target plane MA will be described.

9 and 10 are diagrams illustrating a first movement form of the display area 63 of the target plane MA. FIG. 9 is a diagram schematically showing the movement of the display area 73 from the display area 63 on the target plane MA, and FIG. 10 is a diagram showing the display area 63 and the display area 73 displayed on the display unit 21. . In the first movement mode, the display control unit 17 intermittently moves the display area of the target plane MA by a set angle of view corresponding to one screen of the display unit 21. That is, in the first movement mode, display area 73 is displayed after display area 63 is displayed. Note that in this example, the display area moves for each angle of view of the display unit 21, but the display area is not limited to this, and the display area to be moved can be set as appropriate as long as it is within one angle of view. For example, the display area may move every 0.5 angle of view. Further, the display control unit 17 moves a part of the target damaged location 65 from the display area 63 to the display area 73 so that a part of the target damaged location 65 is located in the center of the display unit 21 . Note that if the target damaged location 65 has a branching location, the display area moves along the main branch. Here, the main branch is determined based on damage information. For example, for each damage after branching, a score is calculated based on the degree of damage, average width, area, length, etc. of the damaged part. Based on this score, a main branch with a higher priority for observation is determined.

The display control unit 17 displays the target plane MA in the display area 63 and the display area 73 in a state facing directly. Further, the display control unit 17 displays the display area 63 and the display area 73 with the same magnification ratio of the target plane MA. In this way, by moving from the display area 63 to the display area 73, the target damaged location 65 can be tracked and observed without losing sight of it. Note that the timing of moving from the display area 63 to the display area 73 is appropriately set by the user. For example, when the display area is manually moved, when the user inputs a movement command via the operation unit 23, the display area 63 is moved to the display area 73. Further, in the case where the display area is automatically moved, the display area is moved from the display area 63 to the display area 73 when a predetermined time has elapsed. Further, as in the third embodiment described below, the display area 63 may be moved from the display area 63 to the display area 73 using the marker as a reference.

(Second movement form)
Next, a second movement form of the display area of the target plane MA will be explained.

FIGS. 11 and 12 are diagrams illustrating a second movement form of the display area 63 of the target plane MA. FIG. 11 is a diagram schematically showing movement of the display area 83 from the display area 63 on the target plane MA, and FIG. 12 is a diagram showing the display area 63 and the display area 83 displayed on the display unit 21. . The display control unit 17 continuously moves the display area in the second movement mode. That is, in the second embodiment, when the user moves the display area, the display area moves continuously. The display control unit 17 displays the target plane MA in the display area 63 and the display area 83 in a state facing directly. Further, the display control unit 17 displays the display area 63 and the display area 83 with the same magnification ratio of the target plane MA. In this way, by moving from the display area 63 to the display area 83, the target damaged location 65 can be tracked and observed without losing sight of it. Note that the timing of moving from the display area 63 to the display area 83 is the same as that described in the first movement mode described above.

As explained above, in this embodiment, the display area of the target plane moves along the shape of the target damage location, so even if the display area of the target plane moves, it is possible to lose sight of the target damage location. It can be tracked and observed without any problems.

Each of the configurations and functions described above can be realized as appropriate using any hardware, software, or a combination of both. For example, a program that causes a computer to execute the above-mentioned processing steps (processing procedures), a computer-readable recording medium (non-temporary recording medium) that records such a program, or a computer that can install such a program. It is possible to apply the present invention to any case.

<Second embodiment>
Next, a second embodiment of the present invention will be described. In this embodiment, damage locations can be visually recognized on a three-dimensional model, and a user selects a target damage location on the three-dimensional model.

FIG. 13 is a flow diagram showing an image display method using the image display device 1 in this embodiment.

First, the display control section 17 causes the display section 21 to display the three-dimensional model stored in the memory 15 (step S20: three-dimensional model display step). Next, the reception unit 19 receives a selection of a target damage location on the three-dimensional model from the user via the operation unit 23 (step S21: target damage reception step). In this embodiment, it is possible to select target damaged locations even in a three-dimensional model that represents the entire structure of the bridge that is the subject of inspection. For example, if the target damage location is large, the user can select the target damage location on the three-dimensional model. Furthermore, even if the damaged location is visualized as a damaged shape model and pasted onto the three-dimensional model, the user can select the damaged location on the three-dimensional model. The display control unit 17 causes the display unit 21 to display a part of the target plane including the selected target damaged location (step S22: target plane display step). The display control unit 17 identifies a plane on the three-dimensional model that has the target damage location, sets that plane as the target plane, and causes the display unit 21 to display a part of the area. Thereafter, the display area of the target plane is moved along the target damaged location (step S23: display area moving step).

As explained above, in this embodiment, a target damage location is selected on a three-dimensional model, a plane on the three-dimensional model having the target damage location is identified, that plane is displayed as a target plane, and the target damage location is The display area moves along the target damage location. Therefore, according to this aspect, the target damage location can be efficiently selected, and even if the display area of the target plane moves, it is possible to track and observe the target damage location without losing sight of it.

<Third embodiment>
Next, a third embodiment of the present invention will be described. In this embodiment, a marker is displayed as an auxiliary display for observing the target damage location.

FIG. 14 shows an example of the main configuration of the image display device 1 of this embodiment. Note that the same reference numerals are given to the parts already described in FIG. 1, and the description thereof will be omitted.

The marker display control unit 91 causes the display unit 21 to display a marker that moves along the target damaged location 65. Furthermore, the marker display control unit 91 moves the marker displayed on the display unit 21. The marker display control unit 91 may automatically move the marker along the target damaged location, or may move the marker along the target damaged location based on a user's operation. A specific example of marker display will be described below.

FIG. 15 is a diagram showing an example of marker display. The marker display control unit 91 displays markers Q1-1 to Q1-5 along the target damage location. The marker display control unit 91 automatically sequentially displays markers Q1-1 to Q1-5 along the target damaged location 65. For example, after the user selects a target damage location, marker Q1-1 is displayed, and then marker Q1-2, marker Q1-3, marker Q1-4, and marker Q1-5 are displayed in order. When marker Q1-5 is displayed, all of markers Q1-1 to Q1-5 are displayed. Note that, as shown in FIG. 15, if the target damage location 65 has a branch, markers Q1-1 to Q1-5 are displayed along the main target damage location 65 based on the damage information, for example. . Further, when all of the markers Q1-1 to Q1-5 are displayed, the display section 21 moves the display area. In the first movement mode described above (see FIGS. 9 and 10), when all of the markers Q1-1 to Q1-5 are displayed, they are moved from the display area 63 to the display area 73. By displaying the marker along the target damage location 65 in this manner, the user can track and observe the target damage location displayed on the display unit 21 without losing sight of it. Furthermore, by making the timing of displaying the marker correspond to the timing of movement of the display area, it is possible to notify the user of the timing of movement of the display area.

FIG. 16 is a diagram showing an example of marker display. The marker display control unit 91 displays the marker Q2 along the target damaged location. The marker display control unit 91 manually displays the marker Q2 so as to be superimposed on the target damaged location 65. For example, the marker display control unit 91 moves the marker Q2 so as to overlap the target damage location 65 based on a command input by the user via the operation unit 23. Furthermore, when the marker Q2 reaches the end of the viewing angle of the display area 63, the display control unit 17 moves the marker Q2 from the display area 63 to the display area as explained in the first movement mode (see FIGS. 9 and 10). Move it to 73. By displaying the marker along the target damage location 65 in this manner, the user can track and observe the target damage location displayed on the display unit 21 without losing sight of it. Furthermore, by matching the movement of the marker manually moved by the user (timing when it reaches the edge of the viewing angle) with the timing of movement of the display area, the user can move the display area at desired timing.

FIG. 17 is a diagram illustrating an example of marker display and subwindow W display. Note that the display area 71 shown in FIG. 17 is displayed at a wider angle than the display area 63 shown in FIG. 16. The marker display control unit 91 displays the marker Q2 superimposed on the target damaged location 65, and manually moves the marker Q2. Further, the display control unit 17 causes the display unit 21 to display the subwindow W. In the sub-window W, an enlarged image of the target damage location 65 where the marker Q2 is located is displayed. In this way, by displaying an enlarged image of the target damage location 65 where the marker Q2 is located, the user can observe even more fine details of the damage location.

Although examples of the present invention have been described above, it goes without saying that the present invention is not limited to the embodiments described above, and that various modifications can be made without departing from the spirit of the present invention.

1: Image display device 9: Display section 11: Device main body 13: CPU
15: Memory 17: Display control unit 19: Reception unit 21: Display unit 23: Operation unit 91: Marker display control unit M: 3D model N: 3D model W: Subwindow

Claims (16)

a memory storing a three-dimensional model of all or part of the structure, which is composed of an inspection image taken of the structure, and detection information of detecting a crack in the structure in the inspection image; and a display unit. An image display device comprising: and a processor,
The processor includes:
displaying the three-dimensional model stored in the memory on the display unit;
receiving a designation of a part of the three-dimensional model displayed on the display unit, and displaying a part of the target plane of the three-dimensional model corresponding to the designated location on the display unit;
accepting selection of at least one of the crack locations in the target plane as a target crack location;
moving a display area of the target plane displayed on the display unit along the shape of the target crack location based on the detection information;
Image display device. a memory storing a three-dimensional model of all or part of the structure, which is composed of an inspection image taken of the structure, and detection information of detecting a crack in the structure in the inspection image; and a display unit. An image display device comprising: and a processor,
The processor includes:
displaying the three-dimensional model stored in the memory on the display unit;
receiving the designation of the crack location on the three-dimensional model displayed on the display unit, and displaying a part of the target plane of the three-dimensional model corresponding to the crack location on the display unit;
moving a display area of the target plane displayed on the display unit based on the detection information along the shape of the target crack location, which is the crack location;
Image display device. The image display device according to claim 1 or 2, wherein the processor causes the display unit to display the target plane facing directly. The image display device according to any one of claims 1 to 3, wherein the processor causes the display unit to display the target plane at a constant magnification ratio before and after the movement of the display area. The image display device according to any one of claims 1 to 4, wherein the processor intermittently moves the display area by a set viewing angle within a viewing angle corresponding to one screen of the display unit. The image display device according to any one of claims 1 to 4, wherein the processor continuously moves the display area. The image display device according to claim 6, wherein the processor causes the display unit to display a marker that moves along the target crack location. The image display device according to claim 6, wherein the processor causes the display unit to display a marker that is manually moved along the target crack location. The image display device according to claim 5, wherein the processor causes the display unit to display a marker that moves along the target crack location, and moves the display area when the marker reaches an end of the set angle of view. . The image display device according to any one of claims 7 to 9, wherein the processor automatically moves the marker. The image display device according to any one of claims 1 to 10, wherein the processor causes the display unit to display an enlarged image of a partial area of the target crack location. The crack location is a branching crack ,
The processor includes:
Determine the main branch by calculating a score based on the degree of cracking , average width, area, length, etc. of the cracked location for each branch ,
moving the display area along the main branch;
The image display device according to any one of claims 1 to 11. a memory storing a three-dimensional model of all or part of the structure, which is composed of an inspection image taken of the structure, and detection information of detecting a crack in the structure in the inspection image; and a display unit. An image display method using an image display device comprising: and a processor,
performed by the processor;
displaying the three-dimensional model stored in the memory on the display unit;
receiving a designation of a part of the three-dimensional model displayed on the display unit, and displaying a part of the target plane of the three-dimensional model corresponding to the designated location on the display unit; ,
accepting selection of at least one of the crack locations in the target plane as a target crack location;
moving a display area of the target plane displayed on the display unit along the shape of the target crack location based on the detection information;
Image display methods including. a memory storing a three-dimensional model of all or a part of the structure, which is composed of an inspection image taken of the structure, and detection information of detecting a crack location in the structure in the inspection image; and a display unit. An image display method using an image display device comprising: and a processor,
performed by the processor;
displaying the three-dimensional model stored in the memory on the display unit;
receiving a designation of the crack location on the three-dimensional model displayed on the display section, and displaying on the display section a part of the target plane of the three-dimensional model that corresponds to the crack location;
moving a display area of the target plane displayed on the display unit based on the detection information along the shape of the target crack location, which is the crack location;
Image display methods including. a memory storing a three-dimensional model of all or part of the structure, which is composed of an inspection image taken of the structure, and detection information of detecting a crack in the structure in the inspection image; and a display unit. A program that causes an image display device comprising a processor and a processor to perform an image display method,
the processor;
displaying the three-dimensional model stored in the memory on the display unit;
receiving a designation of a part of the three-dimensional model displayed on the display unit, and displaying a part of the target plane of the three-dimensional model corresponding to the designated location on the display unit; ,
accepting selection of at least one of the crack locations in the target plane as a target crack location;
moving a display area of the target plane displayed on the display unit along the shape of the target crack location based on the detection information;
A program that performs. a memory storing a three-dimensional model of all or part of the structure, which is composed of an inspection image taken of the structure, and detection information of detecting a crack in the structure in the inspection image; and a display unit. A program that causes an image display device comprising a processor and a processor to perform an image display method,
the processor;
displaying the three-dimensional model stored in the memory on the display unit;
receiving the designation of the crack location on the three-dimensional model displayed on the display unit, and displaying a part of the target plane of the three-dimensional model corresponding to the crack location on the display unit;
moving a display area of the target plane displayed on the display unit based on the detection information along the shape of the target crack location, which is the crack location;
A program that performs.

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