Flood height calculation system, flood height calculation method and flood height calculation program

Abstract

To easily measure an inundation height.SOLUTION: A detection part 211 detects a reference material from image data including an inundation line on a wall surface. A wall position identifying part 215 identifies a bottom-on-the wall position, the position on the wall surface corresponding to a bottom on the reference material, and a top-on-the wall position, the position on the wall surface corresponding to the top of the reference material. The unit height calculation part 212 calculates a unit height, the height per unit pixel, from the number of pixels from the bottom-on-the wall position to the top-on-the wall position in the image data, and an actual height of the reference material. The inundation height calculation part 213 calculates an inundation height that is the distance from the floor surface to the inundation line, based on the number of pixels from the floor surface to the inundation line in the image data and the unit height.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present disclosure relates to a technique for calculating flood height from image data. [Background technology]

[0002] When flood damage occurs, the property insurance company dispatches an adjuster to the policyholder's property to determine whether the damage meets the requirements for insurance payment.

[0003] The requirements for insurance payment are, for example, that at least one of the following two conditions is met: Condition 1: Flooding occurs above the floor level, and Condition 2: Flooding occurs above a certain height (for example, 45 centimeters or more) above ground level. Condition 1 can be easily determined by visually inspecting the interior of the building or by checking image data of the interior of the building. However, condition 2 requires assessors to measure the flood height using a tape measure or other tool, which is time-consuming.

[0004] Patent Document 1 describes a method of comparing a photographed image of an accident vehicle with a registered image of the vehicle model of the accident vehicle, and identifying the extent of damage from the difference. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-76055 Summary of the Invention [Problem to be solved by the invention]

[0006] When applying the technology of Patent Document 1 to measuring flood height, the image data must contain information that can identify the height. For example, this requires photographing the flooded building along with a tape measure or similar. Furthermore, a human must visually check the tape measure. When flood damage occurs, there is a possibility that a large number of insurance claims will be filed. Requiring a human to visually check the data would result in a long processing time for the claims. The present disclosure aims to make it possible to measure flood height easily. [Means for solving the problem]

[0007] The flood height calculation system according to the present disclosure comprises: a detection unit that detects a reference object from image data including a water inundation line on a wall surface; a wall position specifying unit that specifies a wall bottom position, which is a position on the wall surface corresponding to the bottom of the reference object detected by the detection unit, and a wall top position, which is a position on the wall surface corresponding to the top of the reference object; a unit height calculation unit that calculates a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall specified by the wall position specifying unit and an actual height, which is an actual height of the reference object; a flood height calculation unit that calculates a flood height, which is the distance from the floor surface to the flood line, based on the number of pixels from the floor surface to the flood line in the image data and the unit height calculated by the unit height calculation unit; Equipped with.

[0008] the reference object is an object having a thickness, The wall position specifying unit determines a position obtained by shifting the bottom end of the reference object in the image data upward by a bottom image depth, which is the length of the bottom surface of the reference object in the image data in the depth direction. Identify it as the wall base position.

[0009] the reference object is a bottle, The wall position identification unit calculates the bottom image depth by multiplying the image actual ratio obtained by dividing the lid image depth, which is the depth direction length of the top surface of the lid portion of the bottle in the image data, by the lid actual depth, which is the actual depth direction length of the top surface of the lid portion of the bottle, by the bottom actual depth, which is the actual depth direction length of the bottom surface of the bottle.

[0010] The wall position specifying unit specifies the lid image depth by multiplying the vertical width of the lid portion specified from the image data by an upper surface ratio.

[0011] The wall position identification unit identifies the position on the wall as the position obtained by shifting the position of the top end of the bottle upward by the amount of shift obtained by multiplying the length from the bottom end to the top end of the bottle in the image data by the shift ratio.

[0012] The flood height calculation system further comprises: an image acquisition unit that acquires, as the image data, a camera image captured by a camera in a state where a shooting condition, which is a condition for the camera position for shooting, is satisfied; Equipped with.

[0013] The flood height calculation system further comprises: a guide display unit that displays a guide by superimposing it on the camera image obtained by the camera; Equipped with The image acquisition unit acquires, as the image data, a camera image showing a flood line on the wall surface, with the reference object following the guide displayed by the guide display unit.

[0014] The guide indicates an upper limit position and a lower limit position in a height direction, The image acquisition unit acquires, as the image data, a camera image showing a water inundation line on the wall surface with the reference object between the upper limit position and the lower limit position.

[0015] The image acquisition unit acquires the image data when the angle of the camera relative to the wall surface is a designated angle.

[0016] The detection unit detects the reference object from an enlarged image obtained by enlarging the range indicated by the guide.

[0017] The flood height calculation system further comprises: a type identification unit that identifies the type of the bottle based on the size of the bottle cap portion and the size of the bottle body detected by the detection unit; Equipped with The unit height calculation unit uses the actual height according to the type identified by the type identification unit.

[0018] The type identification unit identifies the type of the bottle from the ratio between the width of the lid portion and the width of the body portion.

[0019] The flood height calculation system further comprises: a correction unit that corrects the flood height by a correction amount corresponding to the flood height calculated by the flood height calculation unit; Equipped with.

[0020] The flood height calculation system further comprises: a reliability calculation unit that calculates the reliability of the flood height; a data transmission unit that transmits the reliability calculated by the reliability calculation unit together with the flood height; Equipped with.

[0021] The flood height calculation method according to the present disclosure is The computer detects a reference object from the image data including the flood line on the wall surface, a computer identifying a wall bottom position, which is a position on the wall surface corresponding to a bottom of the reference object, and a wall top position, which is a position on the wall surface corresponding to an upper part of the reference object; a computer calculates a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall and an actual height, which is an actual height of the reference object; A computer calculates the flood height, which is the distance from the floor surface to the flood line, from the number of pixels from the floor surface to the flood line in the image data and the unit height.

[0022] The flood height calculation program according to the present disclosure is a detection process for detecting a reference object from image data including a flood line on a wall surface; a wall position specifying process for specifying a wall bottom position, which is a position on the wall surface corresponding to the bottom of the reference object detected by the detection process, and a wall top position, which is a position on the wall surface corresponding to the top of the reference object; a unit height calculation process for calculating a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall specified by the wall position specification process and an actual height, which is the actual height of the reference object; a flood height calculation process for calculating a flood height, which is the distance from the floor surface to the flood line, based on the number of pixels from the floor surface to the flood line in the image data and the unit height calculated by the unit height calculation process; The computer functions as a flood height calculation device. [Effects of the Invention]

[0023] In the present disclosure, the flood height is calculated based on the reference object detected from the image data, which makes it possible to measure the flood height easily. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 1 is a configuration diagram of a flood height calculation system 100 according to the first embodiment. [Figure 2] FIG. 1 is a configuration diagram of a user terminal 10 according to the first embodiment. [Figure 3] FIG. 1 is a configuration diagram of a flood height calculation device 20 according to the first embodiment. [Figure 4] 3 is a flowchart of the overall processing of the inundation height calculation system 100 according to the first embodiment. [Figure 5] 4 is a flowchart of a photographing process according to the first embodiment. [Figure 6] FIG. 4 is an explanatory diagram of the flood line designation process according to the first embodiment. [Figure 7] FIG. 4 is an explanatory diagram of a unit height calculation process according to the first embodiment. [Figure 8] FIG. 10 is a diagram showing the configuration of a user terminal 10 according to a first modification. [Figure 9] FIG. 10 is a diagram showing the configuration of a flood height calculation device 20 according to a first modified example. [Figure 10] FIG. 10 is a configuration diagram of a flood height calculation device 20 according to a second embodiment. [Figure 11] FIG. 10 is an explanatory diagram of how a reference object is reflected in the second embodiment. [Figure 12] 10 is a flowchart of a unit height calculation process according to the second embodiment. [Figure 13] FIG. 10 is an explanatory diagram of a wall bottom position specifying process according to the second embodiment. [Figure 14] FIG. 10 is an explanatory diagram of a wall bottom position specifying process according to the second embodiment. [Figure 15] FIG. 10 is an explanatory diagram of a wall bottom position specifying process according to the second embodiment. [Figure 16] FIG. 10 is an explanatory diagram of an on-wall position specifying process according to the second embodiment. [Figure 17] FIG. 10 is an explanatory diagram of a height calculation process according to the second embodiment. [Figure 18] FIG. 11 is a configuration diagram of a user terminal 10 according to a third embodiment. [Figure 19] 11 is a flowchart of a photographing process according to the third embodiment. [Figure 20] FIG. 11 is an explanatory diagram of a guide selection process according to the third embodiment. [Figure 21] FIG. 10 is an explanatory diagram of an image acquisition process according to the third embodiment. [Figure 22] FIG. 10 is an explanatory diagram of a detection process according to the fourth embodiment. [Figure 23] FIG. 10 is a configuration diagram of a flood height calculation device 20 according to a fifth embodiment. [Figure 24] FIG. 13 is an explanatory diagram of types of reference objects according to the fifth embodiment. [Figure 25] 13 is a flowchart of a unit height calculation process according to the fifth embodiment. [Figure 26] FIG. 13 is a configuration diagram of a flood height calculation device 20 according to a sixth embodiment. [Figure 27] 13 is a flowchart of a flood height calculation process according to the sixth embodiment. [Figure 28] FIG. 20 is an explanatory diagram of a correction process according to the sixth embodiment. [Figure 29] FIG. 20 is an explanatory diagram of a correction process according to the sixth embodiment. [Figure 30] FIG. 20 is an explanatory diagram of a correction process according to the sixth embodiment. [Figure 31] FIG. 13 is a configuration diagram of a flood height calculation device 20 according to a seventh embodiment. [Figure 32] 13 is a flowchart of a flood height calculation process according to the seventh embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0025] Embodiment 1 ***Configuration Description*** The configuration of a flood height calculation system 100 according to the first embodiment will be described with reference to FIG. The inundation height calculation system 100 comprises a user terminal 10 and an inundation height calculation device 20. The user terminal 10 and the inundation height calculation device 20 are connected via a transmission line 90. The user terminal 10 is a computer such as a smartphone or tablet terminal used by a user. The user terminal 10 is a computer for photographing flooded areas and acquiring image data. The flood height calculation device 20 is a computer such as a server in a cloud system. The flood height calculation device 20 is a computer that calculates flood height based on image data acquired by the user terminal 10. A specific example of the transmission path 90 is the Internet. The flood height calculation device 20 is connected to the server of the insurance company via a transmission line 91. A specific example of the transmission line 91 is the Internet.

[0026] In the first embodiment, the explanation will be based on the configuration shown in Figure 1. However, the functions of the flood height calculation device 20 may also be provided by the user terminal 10. In this case, the flood height calculation system 100 will not include the flood height calculation device 20, but will only include the user terminal 10.

[0027] The configuration of the user terminal 10 according to the first embodiment will be described with reference to FIG. The user terminal 10 includes hardware such as a processor 11, a memory 12, a storage 13, and a communication interface 14. The processor 11 is connected to other hardware via signal lines and controls the other hardware. The user terminal 10 is connected to a camera 141 via the communication interface 14. Alternatively, the camera 141 is internally connected to and integrated with the user terminal 10.

[0028] The user terminal 10 includes, as functional components, an image acquisition unit 111, a flood line setting unit 112, and an image transmission unit 113. The functions of the functional components of the user terminal 10 are realized by software. The storage 13 stores a program that realizes the functions of each functional component of the user terminal 10. The program is read into the memory 12 by the processor 11 and The processing is executed by the processor 11. As a result, the functions of the functional components of the user terminal 10 are realized.

[0029] The configuration of the flood height calculation device 20 according to the first embodiment will be described with reference to FIG. The flood height calculation device 20 comprises the following hardware components: a processor 21, a memory 22, a storage 23, and a communication interface 24. The processor 21 is connected to other hardware components via signal lines and controls these other hardware components.

[0030] The inundation height calculation device 20 comprises, as functional components, a detection unit 211, a unit height calculation unit 212, an inundation height calculation unit 213, and a data transmission unit 214. The functions of each functional component of the inundation height calculation device 20 are realized by software. The storage 23 stores programs that realize the functions of each functional component of the inundation height calculation device 20. These programs are loaded into the memory 22 by the processor 21 and executed by the processor 21. This allows the functions of each functional component of the inundation height calculation device 20 to be realized.

[0031] The processors 11 and 21 are ICs that perform processing. IC stands for Integrated Circuit. Specific examples of the processors 11 and 21 are a CPU, a DSP, and a GPU. CPU stands for Central Processing Unit. DSP stands for Digital Signal Processor. GPU stands for Graphics Processing Unit.

[0032] The memories 12 and 22 are storage devices that temporarily store data. Specific examples of the memories 12 and 22 are SRAM and DRAM. SRAM stands for Static Random Access Memory. DRAM stands for Dynamic Random Access Memory.

[0033] The storages 13 and 23 are storage devices that store data. Specific examples of the storages 13 and 23 are HDDs. HDD stands for Hard Disk Drive. The storages 13 and 23 may also be portable recording media such as SD (registered trademark) memory cards, CompactFlash (registered trademark), NAND flash, flexible disks, optical disks, compact disks, Blu-ray (registered trademark) disks, and DVDs. SD stands for Secure Digital. DVD stands for Digital Versatile Disk.

[0034] The communication interfaces 14 and 24 are interfaces for communicating with external devices. Specific examples of the communication interfaces 14 and 24 are Ethernet (registered trademark), USB, and HDMI (registered trademark) ports. USB is an abbreviation for Universal Serial Bus. HDMI is an abbreviation for High-Definition Multimedia Interface.

[0035] 2 shows only one processor 11. However, there may be multiple processors 11, and the multiple processors 11 may cooperate to execute programs that realize each function. Similarly, in FIG. 3, there is only one processor 21 shown. However, there may be multiple processors 21, and the multiple processors 21 may cooperate to execute programs that realize each function.

[0036] ***Explanation of Operation*** The operation of the flood height calculation system 100 according to the first embodiment will be described with reference to FIGS. The operating procedure of the inundation height calculation system 100 according to embodiment 1 corresponds to the inundation height calculation method according to embodiment 1. Furthermore, the program that realizes the operation of the inundation height calculation system 100 according to embodiment 1 corresponds to the inundation height calculation program according to embodiment 1.

[0037] The overall processing flow of the inundation height calculation system 100 according to the first embodiment will be described with reference to FIG. (Step S1: Photographing process) The image acquisition unit 111 of the user terminal 10 acquires image data including a flood line on a wall surface. The flood line is a trace of water left on the wall surface due to flood damage. The flood line indicates the upper limit of the flooded area. At this time, the image acquisition unit 111 acquires image data so as to include a reference object. The reference object is a predetermined object whose size can be specified. It is desirable that the reference object is an object that is easy to obtain and has a standardized size. Specific examples of the reference object include bottles such as PET bottles or beer bottles, toilet paper, paper cartons such as milk cartons, and aluminum cans of 350 ml or the like. Alternatively, the reference object may be a box or the like sent in advance to the policyholder by the insurance company.

[0038] The photographing process according to the first embodiment will be described with reference to FIG. As a prerequisite, an application program for calculating the flood height is executed, which activates the functions of the image acquisition unit 111, the flood line setting unit 112, and the image transmission unit 113. In addition, the camera 141 provided in the user terminal 10 is activated via the application program.

[0039] (Step S11: Image acquisition process) The image acquisition unit 111 acquires image data by capturing an image of the flood line and a reference object simultaneously using the camera 141. Here, the reference object is placed on the floor.

[0040] (Step S12: Flood line designation process) The inundation line setting unit 112 sets the position of the inundation line in the image data acquired in step S11. Specifically, as shown in Fig. 6, the inundation line setting unit 112 sets the position of the inundation line specified in accordance with a user operation. For example, the position of the inundation line is specified by dragging and moving the line for setting the inundation line on the image data acquired in step S11.

[0041] (Step S13: Data transmission process) The image transmission unit 113 transmits the image data acquired in step S11 and the position information of the flood line set in step S12 to the flood height calculation device 20. At this time, the image transmission unit 113 also transmits information that can identify the insurance contract, such as the policyholder's identification information, along with the image data, etc. in step S13.

[0042] (Step S2: Detection process) The detection unit 211 of the inundation height calculation device 20 detects a reference object from the image data. Specifically, the detection unit 211 inputs the image data transmitted in step S13 into an object detection model to detect the reference object. The object detection model is a model constructed using a neural network or the like.

[0043] (Step S3: Unit height calculation process) The unit height calculation unit 212 of the flood height calculation device 20 identifies the number of pixels in the height direction in the image data of the reference object detected in step S2. As shown in FIG. 7, the number of pixels in the height direction of the reference object is the number of pixels from the bottom to the top of the reference object. For example, When a detection frame surrounding the known reference object is obtained, the number of pixels in the height direction of the reference object is the number of pixels from the bottom edge to the top edge of the detection frame. The unit height calculation unit 212 calculates the unit height, which is the height per unit pixel, from the number of pixels in the height direction and the actual height, which is the actual height of the reference object. Since the size of the reference object is identifiable, the actual height of the reference object is known. In the first embodiment, the unit height calculation unit 212 calculates the unit height, which is the height per pixel, by dividing the actual height by the number of pixels as shown in Equation 1. <Expression 1> Unit height (centimeters) = Actual height (centimeters) / Number of pixels

[0044] (Step S4: Flood height calculation process) The inundation height calculation unit 213 of the inundation height calculation device 20 identifies the number of pixels from the floor to the inundation line in the image data. In embodiment 1, the floor is located at the bottom end of the reference object, as shown in Figure 7. The inundation height calculation unit 213 calculates the inundation height, which is the distance from the floor to the inundation line, from the identified number of pixels and the unit height calculated in step S3. Specifically, the flood height calculation unit 213 calculates the flood height by multiplying the number of pixels from the floor to the flood line by the unit height, as shown in Equation 2. <Expression 2> Flood height (centimeters) = number of pixels x unit height (centimeters)

[0045] (Step S5: Data transmission process) The data transmission unit 214 of the flood height calculation device 20 transmits the flood height calculated in step S4 and the identification information of the insurance policyholder received in step S13 to the insurance company's server.

[0046] There may be multiple types of reference objects. In this case, the user is prompted to specify which reference object to use in step S1. Alternatively, the detected reference object is identified in step S2. Then, in step S3, the actual height corresponding to the type of reference object used is used. The user terminal 10 may be configured to connect directly to the insurance company's server via the transmission path 90, and when the application program is started, it sends the policyholder's identification information, etc. to the insurance company's server, and in step S5, the flood height calculation device 20 sends only the flood height to the insurance company's server. In this case, the insurance company's server compares the flood height received in step S5 with the policyholder's identification information, etc. that it has received in advance. In addition, in step S13, the user terminal 10 may be configured to send image data, etc. and the insurance policyholder's identification information, etc. to the insurance company's server, and the flood height calculation device 20 may be configured to receive the image data, etc. from the insurance company's server. The flood height calculation device 20 executes the processing from step S2 onwards as described above.

[0047] ***Effects of the First Embodiment*** As described above, the inundation height calculation system 100 according to the first embodiment acquires image data including a reference object along with an inundation line. The inundation height calculation system 100 identifies a unit height based on the reference object and calculates the inundation height from the unit height. This allows for easy measurement of the inundation height.

[0048] ***Other Configurations*** <Variation 1> In the first embodiment, each functional component is realized by software. However, as a first modification, each functional component may be realized by hardware. The differences between the first embodiment and the first modification will be described below.

[0049] The configuration of the user terminal 10 according to the first modification will be described with reference to FIG. When each functional component is realized by hardware, the user terminal 10 includes an electronic circuit 15 instead of the processor 11, memory 12, and storage 13. The electronic circuit 15 is a dedicated circuit for realizing the functions of each functional component, the memory 12, and the storage 13.

[0050] The configuration of the flood height calculation device 20 according to the first modification will be described with reference to FIG. When each functional component is realized by hardware, the flood height calculation device 20 includes an electronic circuit 25 instead of the processor 21, memory 22, and storage 23. The electronic circuit 25 is a dedicated circuit that realizes the functions of each functional component, the memory 22, and the storage 23.

[0051] The electronic circuit 15 may be a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, a logic IC, a GA, an ASIC, or an FPGA. GA stands for Gate Array. ASIC stands for Application Specific Integrated Circuit. FPGA stands for Field-Programmable Gate Array. Each functional component may be realized by one electronic circuit 15, or each functional component may be realized by distributing it among a plurality of electronic circuits 15.

[0052] <Variation 2> As a second modification, some of the functional components may be realized by hardware, and other functional components may be realized by software.

[0053] The processor 11, memory 12, storage 13, and electronic circuit 15 are collectively referred to as a processing circuit. In other words, the functions of the respective functional components are realized by the processing circuit.

[0054] Embodiment 2 The second embodiment differs from the first embodiment in that the unit height is calculated by identifying the position on the wall surface of the reference object. In the second embodiment, this difference will be explained, and explanation of the same points will be omitted.

[0055] ***Configuration Description*** The configuration of a flood height calculation device 20 according to the second embodiment will be described with reference to FIG. The flood height calculation device 20 differs from the flood height calculation device 20 shown in Figure 3 in that it includes a wall position identification unit 215 as a functional component. The function of the wall position identification unit 215, like the other functional components, is realized by software or hardware.

[0056] ***Explanation of Operation*** The operation of the inundation height calculation system 100 according to the second embodiment will be described with reference to FIGS. The operating procedure of the inundation height calculation system 100 according to embodiment 2 corresponds to the inundation height calculation method according to embodiment 2. Furthermore, the program that realizes the operation of the inundation height calculation system 100 according to embodiment 2 corresponds to the inundation height calculation program according to embodiment 2.

[0057] In the second embodiment, the reference object is a bottle. In the second embodiment, the reference object is a plastic bottle of a particular size. In the second embodiment, the plastic bottle is placed on the floor in contact with the wall. Since the reference object is a plastic bottle, it has a thickness in the depth direction. Therefore, as shown in Figure 11, in the image data obtained by photographing the reference object from diagonally above, The distance from the bottom to the top of the reference object is affected by the thickness of the reference object. In other words, the distance from the bottom to the top of the reference object does not accurately represent the height of the reference object. Therefore, in embodiment 2, the inundation height calculation system 100 identifies the wall bottom position 31, which is the position on the wall surface corresponding to the bottom of the reference object, and the wall top position 32, which is the position on the wall surface corresponding to the top of the reference object. The inundation height calculation system 100 then calculates the unit height from the positions of the bottom and top of the wall surface.

[0058] In the second embodiment, it is assumed that the approximate imaging angle of the reference object is already determined.

[0059] The unit height calculation process (step S3 in FIG. 4) according to the second embodiment will be described with reference to FIG. (Step S31: Wall bottom position identification process) The wall position identifying unit 215 of the flood height calculation device 20 identifies the wall bottom position 31. There are two methods for identifying the wall bottom position 31: Methods 1 and 2.

[0060] <Method 1> Method 1 is a method based on geometric estimation. The plastic bottle, which is the reference object, is placed on the floor in contact with the wall. Therefore, as shown in FIG. 13, the top edge position 33 of the bottom of the plastic bottle becomes the wall bottom position 31. However, the image data does not show the top edge position 33 of the bottom of the plastic bottle. Therefore, the wall position identifying unit 215 geometrically estimates the top edge position 33 of the bottom of the plastic bottle and identifies the wall bottom position 31. Specifically, the wall position identifying unit 215 identifies the wall bottom position 31 as the position obtained by shifting the bottom edge 35 of the plastic bottle in the image data upward by the bottom image depth 34, which is the length of the bottom of the plastic bottle in the image data in the depth direction.

[0061] As shown in Figure 14, the image data can be considered to be a roughly parallel projection image. Therefore, as described above, the image real ratio, which is the ratio between the actual size of the lid portion and its size in the image data, is roughly equal to the ratio between the actual size of the bottom portion and its size in the image data. Therefore, the wall position identification unit 215 uses this relationship to calculate the bottom image depth 34 and identify the wall bottom position 31.

[0062] Specifically, as shown in FIG. 14, the wall position identification unit 215 calculates the image actual ratio by dividing the lid image depth 36 by the lid actual depth 37. The lid image depth 36 is the depth direction length of the top surface of the lid portion in the image data. A method for identifying the lid image depth 36 will be described later. The lid actual depth 37 is the actual depth direction length of the top surface of the lid portion of the plastic bottle. Since the reference object is an object whose size can be identified, the lid actual depth 37 is known. The wall position specifying unit 215 calculates the bottom image depth 34 by multiplying the actual bottom depth 38, which is the actual length of the bottom surface of the bottle in the depth direction, by the actual image ratio. In other words, the wall position specifying unit 215 calculates the bottom image depth 34 as shown in Equation 3. <Expression 3> Bottom image depth 34 = bottom actual depth 38 x lid image depth 36 / lid actual depth 37 Then, the wall position specifying unit 215 specifies the position obtained by shifting the bottom end 35 of the plastic bottle in the image data upward by the bottom image depth 34 as the wall bottom position 31.

[0063] A method for determining the lid image depth 36 will now be described. It is possible to detect the lid portion from image data by using an object detection model, for example. However, it may be difficult to identify only the top surface of the lid portion. Therefore, as shown in FIG. 15, the wall position identification unit 215 calculates the lid image depth 36 by multiplying the lid vertical width 39, which is the vertical width of the entire lid portion, by the top surface ratio, which represents the proportion of the top surface portion to the entire lid portion. In other words, the wall position identification unit 215 calculates the lid image depth 36 as shown in Equation 4. <Expression 4> Lid image depth 36 = lid vertical width 39 x top surface ratio

[0064] The wall position identification unit 215 calculates the top surface ratio using a regression line from the ratio between the lid vertical width 39 and the lid horizontal width 40, which is the width of the lid portion in the horizontal direction. Specifically, the wall position identification unit 215 calculates the top surface ratio as shown in Equation 5. Here, the slope and intercept are set in advance by performing a simulation or the like. <Formula 5> Top surface ratio = slope x (lid length 39 / lid width 40) + intercept

[0065] The wall position specifying unit 215 may set the upper surface ratio in advance. If the imaging angle of the reference object is roughly determined, the upper surface ratio is also roughly determined. Therefore, it is possible to specify and set the upper surface ratio in advance.

[0066] <Method 2> Method 2 is a statistical estimation method. If the imaging angle of the reference object is roughly fixed, the depth ratio, which is the ratio between the height in the image data of the plastic bottle and the bottom image depth 34, is also roughly fixed. The height in the image data of the plastic bottle is the length from the bottom to the top of the plastic bottle. In other words, the height in the image data of the plastic bottle is the number of pixels in the height direction of the reference object described in the first embodiment. Therefore, the wall position identifying unit 215 sets the depth ratio in advance, assuming that the imaging angle of the reference object is roughly fixed. The wall position identifying unit 215 calculates the bottom image depth 34 by multiplying the height in the image data of the plastic bottle by the depth ratio. Then, the wall position identifying unit 215 identifies the position obtained by shifting the bottom end 35 of the plastic bottle in the image data upward by the bottom image depth 34 as the wall bottom position 31.

[0067] (Step S32: Wall position identification process) The wall position identifying unit 215 of the flood height calculation device 20 identifies the position 32 on the wall. Specifically, wall position identification unit 215 identifies on-wall position 32 by statistical estimation, similar to method 2 in step S31. As shown in Fig. 16, if the imaging angle of the reference object is roughly determined, the deviation ratio, which is the ratio between the height of the plastic bottle in the image data and deviation amount 41, is also roughly determined. Deviation amount 41 is the distance between top end 42 of the plastic bottle and on-wall position 32. Therefore, the wall position identifying unit 215 sets a deviation ratio in advance, assuming that the imaging angle of the reference object is roughly fixed. The wall position identifying unit 215 calculates deviation amount 41 by multiplying the height of the plastic bottle in the image data by the deviation ratio. Then, the wall position identifying unit 215 identifies the position obtained by shifting the top end 42 of the plastic bottle in the image data upward by the deviation amount 41 as the on-wall position 32.

[0068] (Step S33: Height calculation process) As shown in Figure 17, the unit height calculation unit 212 of the flood height calculation device 20 identifies the number of pixels in the height direction in the image data from the wall bottom position 31 identified in step S31 to the wall top position 32 identified in step S32. The unit height calculation unit 212 calculates the unit height, which is the height per unit pixel, from the number of pixels in the height direction and the actual height, which is the actual height of the reference object.

[0069] In the flood height calculation process (step S4 in Figure 4), the flood height calculation unit 213 of the flood height calculation device 20 determines the number of pixels from the floor to the flood line, assuming that the wall bottom position 31 determined in step S31 is the floor position. The flood height calculation unit 213 then calculates the flood height, which is the distance from the floor to the flood line, from the determined number of pixels and the unit height calculated in step S3.

[0070] ***Effects of the Second Embodiment*** As described above, the inundation height calculation system 100 according to the second embodiment calculates the unit height by identifying the position of the reference object on the wall surface. This allows the unit height to be calculated with high accuracy. As a result, the inundation height can be calculated with high accuracy.

[0071] Furthermore, the flood height calculation system 100 according to the second embodiment can accurately identify the position of the bottom surface, thereby enabling the flood height to be calculated with high accuracy.

[0072] ***Other Configurations*** <Variation 3> In the second embodiment, the wall bottom position 31 is determined by calculation. However, the wall bottom position 31 may also be specified by the user. In this case, the wall bottom position 31 is set together with the inundation line in step S1 of Figure 4. The wall bottom position 31 is then transmitted to the inundation height calculation device 20 together with image data, etc.

[0073] Similarly, in the second embodiment, the on-wall position 32 is determined by calculation. However, the on-wall position 32 may be specified by the user. In this case, the on-wall position 32 is set together with the flood line in step S1 of Fig. 4. Then, the on-wall position 32 is also transmitted to the flood height calculation device 20 together with the image data, etc.

[0074] The inundation height calculation device 20 may determine whether the wall bottom position 31 set by the user is appropriate. Specifically, the wall position identification unit 215 identifies the wall bottom position 31 using the method described in the second embodiment. The wall position identification unit 215 then determines whether the difference between the wall bottom position 31 set by the user and the identified wall bottom position 31 is within a threshold. If the difference is within the threshold, the wall position identification unit 215 determines that the wall bottom position 31 set by the user is appropriate. On the other hand, if the difference exceeds the threshold, the wall position identification unit 215 determines that the wall bottom position 31 set by the user is not appropriate. If it is determined that the wall bottom position 31 is not appropriate, the inundation height calculation device 20 may request that the wall bottom position 31 be reset. The flood height calculation device 20 may also determine whether the wall position 32 set by the user is valid or not. If the flood height calculation device 20 determines that the wall position 32 is invalid, the flood height calculation device 20 may request that the wall position 32 be reset.

[0075] Embodiment 3 The third embodiment differs from the first and second embodiments in that the camera image captured by the camera 141 under the conditions for capturing images is acquired as image data. The capturing conditions are the conditions for the camera position for capturing images. In the third embodiment, this difference will be explained, and the explanation of the same points will be omitted. In the third embodiment, a case where a modification is made to the first embodiment will be described. However, it is also possible to make modifications to the second embodiment.

[0076] ***Configuration Description*** The configuration of the user terminal 10 according to the third embodiment will be described with reference to FIG. 2 in that the user terminal 10 includes a guidance display unit 114 as a functional component. The function of the guidance display unit 114 is realized by software or hardware, similar to the other functional components.

[0077] ***Explanation of Operation*** The operation of the inundation height calculation system 100 according to the third embodiment will be described with reference to FIGS. The operating procedure of the inundation height calculation system 100 according to embodiment 3 corresponds to the inundation height calculation method according to embodiment 3. Furthermore, the program that realizes the operation of the inundation height calculation system 100 according to embodiment 3 corresponds to the inundation height calculation program according to embodiment 3.

[0078] The photographing process (step S1 in FIG. 4) according to the third embodiment will be described with reference to FIG. As in the first embodiment, an application program for calculating flood height is executed as a prerequisite.

[0079] (Step S11A: Guide selection process) 20, guide display unit 114 displays guide 51 superimposed on a camera image obtained by camera 141. In the third embodiment, guide 51 indicates upper limit position 52 and lower limit position 53 in the height direction. The guide display unit 114 prepares a plurality of guides 51 with different distances between the upper limit position 52 and the lower limit position 53. The guide display unit 114 then prompts the user to select the guide 51 to use. Specifically, the user is prompted to select the guide 51 to use based on the height of the flood line, etc. The guide display unit 114 displays the selected guide 51 superimposed on the camera image. For example, if the flood line is at a high position, a reference object placed on the floor may only appear small.

[0080] (Step S12A: Image acquisition process) The image acquisition unit 111 acquires, as image data, a camera image showing the flood line on the wall surface when the reference object follows the guide 51. Specifically, the image acquisition unit 111 automatically acquires the camera image as image data when the reference object follows the guide 51. Alternatively, when the reference object follows the guide 51, the image acquisition unit 111 makes the shutter button available for pressing, and acquires the camera image as image data when the shutter button is pressed.

[0081] In the third embodiment, the guide 51 indicates an upper limit position 52 and a lower limit position 53 in the height direction. Therefore, the image acquisition unit 111 acquires, as image data, a camera image showing the flood line on the wall surface when a reference object is placed between the upper limit position 52 and the lower limit position 53. At this time, it is desirable that the upper end of the reference object be close to the upper limit position 52 and the lower end of the reference object be close to the lower limit position 53. By doing so, image data in a pre-intended state can be acquired. For this reason, it is necessary to select an appropriate guide 51 in step S11A.

[0082] At this time, the image acquisition unit 111 acquires image data taking into consideration the shooting angle. Specifically, the image acquisition unit 111 acquires image data when the angle of the camera 141 with respect to the wall surface is a designated angle. The designated angle is an angle set in advance. The designated angles are set for pitch, roll, and yaw. The designated angle may have a certain range, such as 43 degrees to 47 degrees. In other words, the image acquisition unit 111 automatically acquires the camera image as image data when the reference object follows the guide 51 and the angle of the camera 141 with respect to the wall surface is at a designated angle. Alternatively, when the above state is reached, the image acquisition unit 111 makes the shutter button available for pressing, and acquires the camera image as image data when the shutter button is pressed. 20, guide display unit 114 may display a spirit level 54 to indicate the angle of camera 141 and the specified angle. This makes it easier for the user to adjust the angle of camera 141 to the specified angle.

[0083] 21, the image acquisition unit 111 may acquire image data using only a certain area on the central side of the imaging range of the camera 141. In other words, the image acquisition unit 111 may acquire as image data only a certain area on the central side of the imaging range of the camera image. This is because the distortion increases toward the outside of the imaging range of the camera 141, making it difficult to accurately calculate the flood height.

[0084] The processing from step S13A to step S14A is the same as the processing from step S12 to step S13 in FIG.

[0085] ***Effects of the Third Embodiment*** As described above, in the flood height calculation system 100 according to the third embodiment, camera images taken by the camera 141 under conditions that satisfy the photographing conditions are acquired as image data. This allows image data to be obtained in which the reference object is photographed at a roughly determined photographing angle. As a result, the flood height can be calculated with high accuracy.

[0086] The image data is acquired by the user, who is the insurance policyholder. Therefore, there is a risk that the image data may not be acquired properly, resulting in an inaccurate calculation of the flood height.

[0087] In particular, by combining the method described in embodiment 3 with the method described in embodiment 2 of identifying the position on the wall surface of a reference object and calculating the unit height, the flood height can be calculated with high accuracy.

[0088] ***Other Configurations*** <Variation 4> In the third embodiment, guide 51 indicates upper limit position 52 and lower limit position 53. However, guide 51 is not limited to this, and may indicate upper and lower limits for the position of the upper end of the reference object, as well as upper and lower limits for the lower end of the reference object. When the upper end of the reference object is between the upper and lower limits for the upper end position and the lower end of the reference object is between the upper and lower limits for the lower end, the reference object may be considered to be in a state of following guide 51.

[0089] Furthermore, the guide 51 may indicate not only the range in the up and down direction but also the range in the left and right direction.

[0090] Embodiment 4 The fourth embodiment differs from the third embodiment in that the range indicated by the guide 51 is enlarged to detect the reference object. In the fourth embodiment, this difference will be explained, and explanation of the same points will be omitted.

[0091] ***Explanation of Operation*** The operation of the flood height calculation system 100 according to the fourth embodiment will be described with reference to FIG. The operating procedure of the inundation height calculation system 100 according to embodiment 4 corresponds to the inundation height calculation method according to embodiment 4. Furthermore, the program that realizes the operation of the inundation height calculation system 100 according to embodiment 4 corresponds to the inundation height calculation program according to embodiment 4.

[0092] In step S2 of Fig. 4, the detection unit 211 of the inundation height calculation device 20 generates an enlarged image 55 by enlarging the range indicated by the guide 51 in the image data, as shown in Fig. 22. The detection unit 211 then detects a reference object from the enlarged image 55. Specifically, the detection unit 211 inputs the enlarged image 55 into an object detection model to detect the reference object.

[0093] The detection unit 211 may generate an enlarged image 55 by slightly expanding the range indicated by the guide 51.

[0094] ***Effects of the Fourth Embodiment*** As described above, the flood height calculation system 100 according to the fourth embodiment is The range is expanded to detect the reference object. In object detection using image recognition, detection accuracy tends to decrease when the size of the reference object in the image data is small compared to the size of the entire image data. Furthermore, when the size of the reference object is small, the area in the image data that does not show the reference object becomes large, increasing the possibility of falsely detecting an object other than the reference object as the reference object. However, in the flood height calculation system 100 according to the fourth embodiment, the reference object is detected from the enlarged image 55, which is an enlarged view of the area where the reference object is located. This prevents a decrease in detection accuracy and false detection.

[0095] ***Other Configurations*** <Variation 5> When using the method described in the second embodiment, it is necessary to detect the lid of the plastic bottle. In this case, the detection unit 211 cuts out and enlarges the central portion in the left-right direction at the top end of the range in which the plastic bottle, which is the reference object, was detected in step S2 of Fig. 4. The detection unit 211 may then detect the lid from the enlarged image data. It is assumed that the lid is located in the central portion in the left-right direction at the top end.

[0096] Embodiment 5 The fifth embodiment differs from the second embodiment in that there are multiple types of bottles that serve as reference objects. In the fifth embodiment, this difference will be explained, and explanation of the same points will be omitted.

[0097] ***Configuration Description*** The configuration of a flood height calculation device 20 according to the fifth embodiment will be described with reference to FIG. The inundation height calculation device 20 differs from the inundation height calculation device 20 shown in Figure 10 in that it includes a type identification unit 216 as a functional component. The function of the type identification unit 216, like the other functional components, is realized by software or hardware.

[0098] ***Explanation of Operation*** The operation of the inundation height calculation system 100 according to the fifth embodiment will be described with reference to FIGS. The operating procedure of the inundation height calculation system 100 according to embodiment 5 corresponds to the inundation height calculation method according to embodiment 5. Furthermore, the program that realizes the operation of the inundation height calculation system 100 according to embodiment 5 corresponds to the inundation height calculation program according to embodiment 5.

[0099] In the fifth embodiment, as in the second embodiment, the reference object is a plastic bottle. As shown in FIG. 24, there are multiple types of plastic bottles, such as those with a capacity of 500 mL (milliliters) and those with a capacity of 2 L (liters). The sizes vary depending on the type. Therefore, in order to calculate the flood height, it is necessary to identify the type of plastic bottle used as the reference object. In this explanation, we will assume that either a plastic bottle with a capacity of 500 mL or a plastic bottle with a capacity of 2 L is used as the reference object.

[0100] The unit height calculation process according to the fifth embodiment will be described with reference to FIG. (Step S31A: Type identification process) The type identification unit 216 of the flood height calculation device 20 identifies the type of the reference object. In the fifth embodiment, the type identification unit 216 identifies the type of the plastic bottle from the size of the cap portion of the plastic bottle detected in step S2 of FIG. 4 and the size of the body portion of the plastic bottle.

[0101] Specifically, the type identification unit 216 identifies the type of the plastic bottle from the ratio between the width of the lid and the width of the body. As a specific example, the type identification unit 216 determines that the bottle is a 500 mL plastic bottle when the ratio value obtained by dividing the width of the lid by the width of the body is greater than threshold A. On the other hand, the type identification unit 216 determines that the bottle is a 2 L plastic bottle when the ratio value is equal to or less than threshold A.

[0102] The type identification unit 216 may interrupt the process as an error if the ratio value is greater than threshold B or less than threshold C. Here, threshold B is greater than threshold A, and threshold C is less than threshold A. This makes it possible to interrupt the process as an error if a 1 L plastic bottle or the like is used.

[0103] The processing from step S32A to step S34A is the same as the processing from step S31 to step S33 in Fig. 12. However, the actual size of the plastic bottle is determined according to the type identified in step S31A. Specifically, the actual lid depth 37, actual bottom depth 38, and actual height are determined according to the type identified in step S31A. In addition, the slope and intercept, or the top surface ratio used when calculating the lid image depth 36 also use values ​​according to the type identified in step S31A.

[0104] ***Effects of the Fifth Embodiment*** As described above, the flood height calculation system 100 according to the fifth embodiment identifies the type of reference object. This allows the flood height to be calculated using any one of multiple types of reference objects. When a flood occurs, it may be difficult to obtain the specified reference object. Therefore, being able to calculate the flood height using any one of multiple types of reference objects increases convenience.

[0105] Embodiment 6 The sixth embodiment differs from the first to fifth embodiments in that the calculated flood height is corrected. In the sixth embodiment, this difference will be explained, and explanation of the same points will be omitted. In the sixth embodiment, a case where a modification is made to the first embodiment will be described. However, modifications can also be made to the second to fifth embodiments.

[0106] ***Configuration Description*** The configuration of a flood height calculation device 20 according to the sixth embodiment will be described with reference to FIG. The inundation height calculation device 20 differs from the inundation height calculation device 20 shown in Figure 3 in that it includes a correction unit 217 as a functional component. The function of the correction unit 217, like the other functional components, is realized by software or hardware.

[0107] ***Explanation of Operation*** The operation of the flood height calculation system 100 according to the sixth embodiment will be described with reference to FIGS. The operating procedure of the inundation height calculation system 100 according to embodiment 6 corresponds to the inundation height calculation method according to embodiment 6. Furthermore, the program that realizes the operation of the inundation height calculation system 100 according to embodiment 6 corresponds to the inundation height calculation program according to embodiment 6.

[0108] The flood height calculation process (step S4 in FIG. 4) according to the sixth embodiment will be described with reference to FIG. (Step S41: Height calculation process) The flood height calculation unit 213 calculates the flood height as explained in the first embodiment.

[0109] (Step S42: Correction process) The correction unit 217 of the flood height calculation device 20 performs correction according to the flood height calculated in step S41. The flood height calculated in step S41 is corrected by the positive amount. As shown in Figure 28, the image data obtained by the camera 141 shows larger images closer to the center. In other words, the closer the distance to the camera 141, the larger the image. Therefore, even if the distance is the same, the number of pixels increases toward the center of the image data. Therefore, as shown in Figure 29, the approximate deviation for each flood height is statistically recorded in advance as a correction amount. In Figure 29, the correction amount is recorded every 10 centimeters. The correction unit 217 reads out the correction amount corresponding to the flooded height calculated in step S41, and corrects the flooded height calculated in step S41 by the read correction amount.

[0110] In Figure 29, the correction amount is a specific distance. However, as shown in Figure 30, the correction amount may be a percentage of the flood height. This allows for more appropriate correction.

[0111] ***Effects of the Sixth Embodiment*** As described above, the inundation height calculation system 100 according to the sixth embodiment corrects the calculated inundation height by a correction amount corresponding to the calculated inundation height, thereby enabling the inundation height to be calculated with high accuracy.

[0112] Embodiment 7 The seventh embodiment differs from the first to sixth embodiments in that it calculates the reliability of the calculated flood height. In the seventh embodiment, this difference will be explained, and explanation of the same points will be omitted. In the seventh embodiment, a case where a modification is made to the first embodiment will be described. However, modifications can also be made to the second to sixth embodiments.

[0113] ***Configuration Description*** The configuration of the flood height calculation device 20 according to the seventh embodiment will be described with reference to FIG. The inundation height calculation device 20 differs from the inundation height calculation device 20 shown in Figure 3 in that it includes a reliability calculation unit 218 as a functional component. The function of the correction unit 217, like the other functional components, is realized by software or hardware.

[0114] ***Explanation of Operation*** The operation of the flood height calculation system 100 according to the seventh embodiment will be described with reference to FIG. The operating procedure of the inundation height calculation system 100 according to embodiment 7 corresponds to the inundation height calculation method according to embodiment 7. Furthermore, the program that realizes the operation of the inundation height calculation system 100 according to embodiment 7 corresponds to the inundation height calculation program according to embodiment 7.

[0115] The flood height calculation process (step S4 in FIG. 4) according to the seventh embodiment will be described with reference to FIG. (Step S41A: Height calculation process) The flood height calculation unit 213 calculates the flood height as explained in the first embodiment.

[0116] (Step S42A: Reliability calculation process) The reliability calculation unit 218 of the inundation height calculation device 20 calculates the reliability of the inundation height calculated in step S41. Specifically, the reliability calculation unit 218 calculates the reliability based on information related to the accuracy of calculation of the unit height or inundation height, such as the shooting angle of the image data and the state of the reference object. In this case, the reliability calculation unit 218 may calculate an error range for the inundation height according to the reliability. The lower the reliability, the larger the error range.

[0117] A specific example of a method for calculating the reliability will be described. As explained in the third embodiment, it is assumed that the guide 51 is displayed and image data is acquired. In this case, the reliability calculation unit 218 calculates the reliability according to the degree to which the reference object follows the guide 51. For example, the reliability calculation unit 218 calculates the reliability according to the distance between the upper end of the reference object and the upper limit position 52 and the distance between the lower end of the reference object and the lower limit position 53. The reliability calculation unit 218 increases the reliability as the sum of these distances becomes shorter.

[0118] As explained in Modification 3, it is assumed that at least one of the wall bottom position 31 and the on-wall position 32 is specified. In this case, the reliability calculation unit 218 calculates the reliability according to the difference between the specified wall bottom position 31 and the wall bottom position 31 calculated by the method explained in Embodiment 2. The reliability calculation unit 218 also calculates the reliability according to the difference between the specified on-wall position 32 and the on-wall position 32 calculated by the method explained in Embodiment 2. The smaller the difference, the higher the reliability calculation unit 218 sets. Note that the reliability calculation unit 218 may significantly lower the reliability if the wall bottom position 31 is not between the lower end and the upper end of the reference object, because the wall bottom position 31 should be between the lower end and the upper end of the reference object.

[0119] As described in the fifth embodiment, it is assumed that the type of the reference object is determined. In this case, the reliability calculation unit 218 calculates the reliability according to the determination accuracy. The higher the determination accuracy, the higher the reliability calculation unit 218 sets. For example, suppose you want to determine whether a plastic bottle is 500 mL or 2 L using a ratio value obtained by dividing the width of the lid by the width of the body. In this case, you set the accuracy of the determination result for each ratio value. This allows you to specify the accuracy of the determination result.

[0120] In step S5 of Fig. 4, the data transmission unit 214 transmits the reliability together with the flood height to the insurance company's server. If an error range has been calculated, the data transmission unit 214 also transmits the error range to the insurance company's server.

[0121] ***Effects of the Seventh Embodiment*** As described above, the flood height calculation system 100 according to the seventh embodiment calculates the reliability of the flood height, which makes it easier for insurance companies to determine whether or not the calculated flood height is reliable. When filing an insurance claim for flood damage, if a user uses the system in an unexpected way, the insurance amount calculated may be higher than the actual amount. It is also possible that a malicious user may tamper with the reference object to claim an unreasonably high amount of insurance. An example of tampering with the reference object is using a plastic bottle with an unusual shape. Therefore, if the reliability is lower than the standard, a possible response would be to have an insurance company employee visually check the claim.

[0122] Moreover, the flood height calculation system 100 according to the seventh embodiment calculates the error range. Insurance payments for flood damage may be determined based on the range of flood height. Therefore, insurance companies may take the following measures, for example: If the insurance payment does not change even after taking into account the margin of error, they will use the calculated flood height. If the insurance payment may change when the margin of error is taken into account, they will conduct a visual check.

[0123] In addition, the word "unit" in the above description may be read as a "circuit," "step," "procedure," "process," or "processing circuit."

[0124] The embodiments and modifications of the present disclosure have been described above. Some of these embodiments and modifications may be combined and implemented. Also, one or more of them may be implemented partially. Note that the present disclosure is not limited to the above embodiments and modifications, and various modifications are possible as needed. [Explanation of symbols]

[0125] 100 Flood height calculation system, 10 user terminal, 11 processor, 12 memory, 13 storage, 14 communication interface, 15 electronic circuit, 111 image acquisition unit, 112 flood line setting unit, 113 image transmission unit, 114 guide display unit, 141 camera, 20 flood height calculation device, 21 processor, 22 memory, 23 storage, 24 communication interface, 25 electronic circuit, 211 detection unit, 212 unit height calculation unit, 213 Flood height calculation unit, 214 data transmission unit, 215 wall position identification unit, 216 type identification unit, 217 correction unit, 218 reliability calculation unit, 31 wall bottom position, 32 wall top position, 33 top end position, 34 bottom image depth, 35 bottom end, 36 lid image depth, 37 lid actual depth, 38 bottom actual depth, 39 lid vertical width, 40 lid horizontal width, 41 displacement amount, 42 top end, 51 guide, 52 upper limit position, 53 lower limit position, 54 spirit level, 55 enlarged image, 90 transmission path.

Claims

1. An image acquisition unit that acquires image data that is a camera image taken with a camera while satisfying shooting conditions, which are conditions for the camera position to take the image, and that includes image data on a wall surface that includes a flood line; a guide display unit that displays guides indicating upper and lower limit positions in a height direction superimposed on a camera image obtained by the camera; and a detection unit that detects a reference object placed on a floor surface from the image data; a wall position specifying unit that specifies a wall bottom position, which is a position on the wall surface corresponding to the bottom of the reference object detected by the detection unit, and a wall top position, which is a position on the wall surface corresponding to the top of the reference object; a unit height calculation unit that calculates a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall specified by the wall position specifying unit and an actual height, which is an actual height of the reference object; a flood height calculation unit that calculates a flood height, which is the distance from the wall bottom position to the flood line, based on the number of pixels from the wall bottom position to the flood line in the image data and the unit height calculated by the unit height calculation unit; a reliability calculation unit that calculates the reliability of the flooded height calculated by the flooded height calculation unit based on the distance between the upper end of the reference object and the upper limit position and the distance between the lower end of the reference object and the lower limit position; A flood height calculation system.

2. The reliability calculation unit calculates the reliability so that the reliability increases as the sum of the distance between the upper end of the reference object and the upper limit position and the distance between the lower end of the reference object and the lower limit position decreases. The flood height calculation system according to claim 1 .

3. a detection unit that detects a reference object placed on the floor surface from image data including a water inundation line on the wall surface; a wall position specifying unit that specifies a wall bottom position, which is a position on the wall surface corresponding to the bottom of the reference object detected by the detection unit, and a wall top position, which is a position on the wall surface corresponding to the top of the reference object; a unit height calculation unit that calculates a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall specified by the wall position specifying unit and an actual height, which is an actual height of the reference object; a flood height calculation unit that calculates a flood height, which is the distance from the wall bottom position to the flood line, based on the number of pixels from the wall bottom position to the flood line in the image data and the unit height calculated by the unit height calculation unit; a reliability calculation unit that calculates the reliability of the flood height calculated by the flood height calculation unit based on the difference between the wall bottom position specified by the user and the wall bottom position identified by the wall position identification unit; A flood height calculation system.

4. the reference object is an object having a thickness, The flood height calculation system described in claim 3, wherein the wall position identification unit identifies the wall bottom position as a position obtained by shifting the lower end of the reference object in the image data upward by the bottom image depth, which is the depth-wise length of the bottom surface of the reference object in the image data.

5. The reliability calculation unit calculates the reliability so that the smaller the difference between the wall bottom position specified by the user and the wall bottom position identified by the wall position identification unit, the higher the reliability. The flood height calculation system according to claim 4.

6. a detection unit that detects a reference object, which is a bottle placed on a floor surface, from image data including a water inundation line on the wall surface; a position on the wall surface corresponding to the bottom of the reference object detected by the detection unit; and a wall top position, which is a position on the wall surface corresponding to the top of the reference object. a wall position specifying unit for determining a wall position; The image data from the bottom position of the wall to the top position of the wall specified by the wall position specifying unit a unit height calculation unit that calculates a unit height, which is a height per unit pixel, from the number of pixels in the data and an actual height, which is an actual height of the reference object; a flood height calculation unit that calculates a flood height, which is the distance from the wall bottom position to the flood line, based on the number of pixels from the wall bottom position to the flood line in the image data and the unit height calculated by the unit height calculation unit; a reliability calculation unit that calculates the reliability of the flooded height calculated by the flooded height calculation unit based on a ratio value obtained by dividing the width of the lid portion of the bottle detected by the detection unit by the width of the body portion of the bottle; A flood height calculation system.

7. The flood height calculation system further comprises: a data transmission unit that transmits the reliability calculated by the reliability calculation unit together with the flood height to a server of an insurance company; The flood height calculation system according to any one of claims 1 to 6, comprising:

8. The reliability calculation unit calculates the error range so that the lower the calculated reliability, the larger the error range of the flood height.

7. The flood height calculation system according to claim 1.

9. The flood height calculation system further comprises: a data transmission unit that transmits the reliability and the error range calculated by the reliability calculation unit together with the flood height to a server of an insurance company; The flood height calculation system according to claim 8, comprising:

10. A computer acquires image data that is a camera image taken with a camera under conditions that are conditions for the camera position to take the image, the image data including a water inundation line on a wall surface, a computer displays guides indicating upper and lower limit positions in the height direction superimposed on the camera image obtained by the camera; a computer detects a reference object placed on the floor surface from the image data; a computer identifying a wall bottom position, which is a position on the wall surface corresponding to a bottom of the reference object, and a wall top position, which is a position on the wall surface corresponding to an upper part of the reference object; a computer calculates a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall and an actual height, which is an actual height of the reference object; a computer calculates a flood height, which is the distance from the wall bottom position to the flood line, from the number of pixels from the wall bottom position to the flood line in the image data and the unit height; A flood height calculation method in which a computer calculates the reliability of the flood height based on the distance between the upper end of the reference object and the upper limit position and the distance between the lower end of the reference object and the lower limit position.

11. The computer detects a reference object placed on the floor surface from image data including a flood line on the wall surface; a computer identifying a wall bottom position, which is a position on the wall surface corresponding to a bottom of the reference object, and a wall top position, which is a position on the wall surface corresponding to an upper part of the reference object; a computer calculates a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall and an actual height, which is an actual height of the reference object; a computer calculates a flood height, which is the distance from the wall bottom position to the flood line, from the number of pixels from the wall bottom position to the flood line in the image data and the unit height; A flood height calculation method in which a computer calculates the reliability of the flood height based on the difference between the wall bottom position specified by the user and the identified wall bottom position.

12. The computer detects a reference object, which is a bottle placed on the floor, from image data including a water intrusion line on the wall surface; a computer identifying a wall bottom position, which is a position on the wall surface corresponding to a bottom of the reference object, and a wall top position, which is a position on the wall surface corresponding to an upper part of the reference object; a computer calculates a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall and an actual height, which is an actual height of the reference object; a computer calculates a flood height, which is the distance from the wall bottom position to the flood line, from the number of pixels from the wall bottom position to the flood line in the image data and the unit height; A water inundation height calculation method in which a computer calculates the reliability of the water inundation height based on a ratio value obtained by dividing the detected width of the bottle cap portion by the width of the bottle body portion.

13. An image acquisition process for acquiring image data that is a camera image taken with a camera while satisfying a shooting condition, which is a condition for the camera position to take the image, and that includes a water inundation line on a wall surface; a guide display process for displaying guides indicating upper and lower limit positions in a height direction superimposed on a camera image obtained by the camera; a detection process for detecting a reference object placed on a floor surface from the image data; a wall position specifying process for specifying a wall bottom position, which is a position on the wall surface corresponding to the bottom of the reference object detected by the detection process, and a wall top position, which is a position on the wall surface corresponding to the top of the reference object; a unit height calculation process for calculating a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall specified by the wall position specification process and an actual height, which is the actual height of the reference object; a flood height calculation process that calculates a flood height, which is the distance from the wall bottom position to the flood line, based on the number of pixels from the wall bottom position to the flood line in the image data and the unit height calculated by the unit height calculation process; a reliability calculation process for calculating the reliability of the flooded height calculated by the flooded height calculation process, based on the distance between the upper end of the reference object and the upper limit position and the distance between the lower end of the reference object and the lower limit position; A flood height calculation program that enables a computer to function as a flood height calculation device.

14. a detection process for detecting a reference object placed on the floor surface from image data including a flood line on the wall surface; a wall position specifying process for specifying a wall bottom position, which is a position on the wall surface corresponding to the bottom of the reference object detected by the detection process, and a wall top position, which is a position on the wall surface corresponding to the top of the reference object; a unit height calculation process for calculating a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall specified by the wall position specification process and an actual height, which is the actual height of the reference object; a flood height calculation process that calculates a flood height, which is the distance from the wall bottom position to the flood line, based on the number of pixels from the wall bottom position to the flood line in the image data and the unit height calculated by the unit height calculation process; a reliability calculation process for calculating the reliability of the flood height calculated by the flood height calculation process according to the difference between the wall bottom position specified by the user and the wall bottom position identified by the wall position identification process; A flood height calculation program that enables a computer to function as a flood height calculation device.

15. a detection process for detecting a reference object, which is a bottle placed on the floor surface, from image data including a water inundation line on the wall surface; a wall position specifying process for specifying a wall bottom position, which is a position on the wall surface corresponding to the bottom of the reference object detected by the detection process, and a wall top position, which is a position on the wall surface corresponding to the top of the reference object; a unit height calculation process for calculating a unit height, which is a height per unit pixel, from the number of pixels in the image data from the bottom position of the wall to the top position of the wall specified by the wall position specification process and an actual height, which is the actual height of the reference object; a flood height calculation process that calculates a flood height, which is the distance from the wall bottom position to the flood line, based on the number of pixels from the wall bottom position to the flood line in the image data and the unit height calculated by the unit height calculation process; a reliability calculation process for calculating the reliability of the flooded height calculated by the flooded height calculation process based on a ratio value obtained by dividing the width of the lid portion of the bottle detected by the detection process by the width of the body portion of the bottle; A flood height calculation program that enables a computer to function as a flood height calculation device.

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