JP2022122587A - Inundation height measurement device, inundation height measurement method, and inundation height measurement program - Google Patents

Abstract

To provide an inundation height measurement device, an inundation height measurement method, and an inundation height measurement program which can easily measure an inundation height when a flood occurs.SOLUTION: A data acquisition section 112 acquires point group data as a plurality of pieces of point data indicating positions of reflection points, which are obtained by measuring an area including an upper limit position of inundation from the ground in an inundated building by using an optical sensor 141 for receiving reflection light reflected at the reflection points after irradiation of irradiation light so as to measure the positions of the reflection points. An inundation height measurement section 114 measures the distance from a ground level indicating a position of the ground to an inundation line indicating the upper limit position of the inundation in a direction vertical to a horizontal direction as an inundation height on the basis of the point group data acquired by the data acquisition section 112.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to technology for measuring the flood height of a flooded building.

When flood damage occurs, the property and casualty insurance company receives a call from the policyholder, dispatches an assessor to the policyholder's building, and determines whether the damage situation meets the insurance claim payment requirements. .

The payment requirements for insurance claims are, for example, to satisfy at least one of the following two conditions. Condition 1: There is flooding above the floor, Condition 2: There is flooding above a certain height (for example, 45 cm or more) from the ground level.
Condition 1 can be easily determined by visually observing the inside of the building or by checking image data of the inside of the building. However, condition 2 requires an assessor to measure the inundation height using a measure or the like, which is time-consuming.

Patent Literature 1 describes comparing a photographed image of the accident vehicle with a registered image of the vehicle type of the accident vehicle, and specifying the degree of damage from the difference.

JP-A-2001-76055

When applying the technique of Patent Literature 1 to the measurement of the flood height, the image data must contain information that can identify the height. So, for example, an object of known measure or size must be photographed along with a flooded building. Depending on how an object whose measure or size is known is reflected, it is difficult to accurately measure the flooded height.
An object of the present disclosure is to make it possible to easily measure the inundation height.

The inundation height measuring device according to the present disclosure is
Obtained by measuring an area of a flooded building from the ground to the flooded upper limit position by an optical sensor that measures the position of the reflection point by irradiating irradiation light and receiving the reflected light reflected by the reflection point. a data acquisition unit that acquires point cloud data, which is a plurality of point data indicating positions of the reflection points;
Based on the point cloud data acquired by the data acquisition unit, the vertical distance from the ground surface indicating the position of the ground to the inundation line indicating the upper limit of the inundation is measured as the inundation height. and a high measurement unit.

The data acquisition unit is a target image, which is image data of an area from which the point cloud data is acquired, and is image data in which each of the plurality of point data constituting the point cloud data is associated with a pixel. and get
The inundation height measuring device further comprises:
a submerged area identifying unit that identifies the submerged line based on the target image obtained by the data obtaining unit;
The inundation height measuring unit measures a vertical distance from the ground surface to the inundation line specified by the inundation range specifying unit as the inundation height.

The flooded area identifying unit identifies the flooded line by displaying the target image and receiving a designation of a flooded upper limit position in the target image.

The inundation range identification unit identifies the inundation line based on the target image acquired by the data acquisition unit, using a trained model that infers the upper limit of flooding from an input image that is image data of a flooded building. do.

The inundation range identification unit uses a trained model for inferring a flooded upper limit position from an input image that is image data of a flooded building, and the candidate for the inundation line based on the target image acquired by the data acquisition unit. The inundation line is specified by specifying the position, displaying the target image with the candidate position indicated, and accepting the specification of the flooded upper limit position in the target image.

The inundation height measurement unit measures a position indicated by point data relating to the ground surface in the point cloud data acquired by the data acquisition unit, and point data relating to the inundation line in the point cloud data acquired by the data acquisition unit. The flood height is measured from the position indicated by .

The inundation height measuring device further comprises:
A height determination unit is provided for determining whether or not the flooded height measured by the flooded height measuring unit is equal to or higher than a reference height.

The inundation height measuring device further comprises:
An insurance money calculation unit is provided for calculating an insurance money amount for flood damage related to the building when the height determination unit determines that the flooded height is equal to or higher than the reference height.

The inundation height measurement method according to the present disclosure includes:
The data acquisition unit detects an area of the flooded building from the ground to the flooded upper limit position by an optical sensor that measures the position of the reflection point by receiving the light reflected by the reflection point after irradiating the irradiation light. Acquiring point cloud data, which is a plurality of point data indicating the positions of the reflection points obtained by measurement,
Based on the point cloud data, the inundation height measuring unit measures the vertical distance from the ground surface indicating the position of the ground to the inundation line indicating the upper limit position of the water as the inundation height.

The inundation height measurement program according to the present disclosure is
Obtained by measuring an area of a flooded building from the ground to the flooded upper limit position by an optical sensor that measures the position of the reflection point by irradiating irradiation light and receiving the reflected light reflected by the reflection point. a data acquisition process for acquiring point cloud data, which is a plurality of point data indicating the positions of the reflection points;
Based on the point cloud data acquired by the data acquisition process, the vertical distance from the ground surface indicating the position of the ground to the inundation line indicating the upper limit of the inundation is measured as the inundation height. The computer functions as an inundation height measurement device that performs high measurement processing.

In the present disclosure, the flood height is measured based on the point cloud data obtained by measuring with the optical sensor. As a result, it is not necessary to photograph an object of known measure or size together with the flooded building, and the flood height can be easily measured.

1 is a configuration diagram of a damage assessment system 100 according to Embodiment 1. FIG. 1 is a configuration diagram of a flooded height measuring device 10 according to Embodiment 1. FIG. 2 is a configuration diagram of the master management device 20 according to the first embodiment; FIG. 4 is a flowchart showing the operation of the damage assessment system 100 according to Embodiment 1; 4 is an explanatory diagram of user information 231 according to Embodiment 1. FIG. 4 is an explanatory diagram of contract information 232 according to Embodiment 1. FIG. FIG. 4 is an explanatory diagram of rate information 233 according to Embodiment 1; FIG. FIG. 2 is an explanatory diagram of accident information 234 according to Embodiment 1; FIG. FIG. 2 is a configuration diagram of a flooded height measuring device 10 according to Modification 1; FIG. 3 is a configuration diagram of a master management device 20 according to Modification 1; FIG. 2 is a configuration diagram of a flood height measuring device 10 according to Embodiment 2; FIG. 10 is a configuration diagram of a flood height measuring device 10 according to Embodiment 3;

Embodiment 1.
*** Configuration description ***
A configuration of a damage assessment system 100 according to Embodiment 1 will be described with reference to FIG.
A damage assessment system 100 includes a flood height measuring device 10 and a master management device 20 . The inundation height measuring device 10 and the master management device 20 are connected via a transmission line 30 .
The inundation height measuring device 10 is a computer such as a smartphone and a tablet terminal that measures the inundation height of a building and assesses damage. The master management device 20 is a computer such as a server that manages information on buildings and insurance contracts. The transmission line 30 is a network such as a cellular communication network and the Internet.

The configuration of the flooded height measuring device 10 according to the first embodiment will be described with reference to FIG.
The inundation height measuring device 10 includes hardware including 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 these other hardware.
The inundation height measuring device 10 is connected to an optical sensor 141 such as LiDAR (Light Detection and Ranging) and an optical camera 142 via a communication interface 14 . Although the optical sensor 141 and the optical camera 142 are mounted on the inundation height measuring device 10 in FIG. 2 , they may be provided outside the inundation height measuring device 10 .

The inundation height measurement device 10 includes, as functional components, a communication unit 111, a data acquisition unit 112, a inundation range identification unit 113, a inundation height measurement unit 114, a height determination unit 115, and an insurance payment calculation unit 116. Prepare. The function of each functional component of the inundation height measuring device 10 is implemented by software.
The storage 13 stores a program that implements the function of each functional component of the inundation height measuring device 10 . This program is read into the memory 12 by the processor 11 and executed by the processor 11 . Thereby, the function of each functional component of the inundation height measuring device 10 is realized.

The configuration of the master management device 20 according to the first embodiment will be described with reference to FIG.
The master management device 20 includes hardware including a processor 21 , a memory 22 , a storage 23 and a communication interface 24 . The processor 21 is connected to other hardware via signal lines and controls these other hardware.

The master management device 20 includes a communication unit 211 and a determination unit 212 as functional components. The function of each functional component of the master management device 20 is implemented by software.
The storage 23 stores a program that implements the function of each functional component of the master management device 20 . This program is read into the memory 22 by the processor 21 and executed by the processor 21 . Thereby, the function of each functional component of the master management device 20 is realized.

The storage 23 stores user information 231 , contract information 232 , rate information 233 and accident information 234 .

The processors 11 and 21 are ICs (Integrated Circuits) that perform processing. Specific examples of the processors 11 and 21 are CPUs (Central Processing Units), DSPs (Digital Signal Processors), and GPUs (Graphics Processing Units).

The memories 12 and 22 are storage devices that temporarily store data. Specific examples of the memories 12 and 22 are SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory).

The storages 13 and 23 are storage devices that store data. As a specific example, the storages 13 and 23 are HDDs (Hard Disk Drives). The storages 13 and 23 are SD (registered trademark, Secure Digital) memory cards, CF (Compact Flash, registered trademark), NAND flashes, flexible disks, optical disks, compact disks, Blu-ray (registered trademark) disks, DVDs (Digital Versatile Disks). ) may be a portable recording medium.

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 (Universal Serial Bus), and HDMI (registered trademark, High-Definition Multimedia Interface) ports.

Only one processor 11 was shown in FIG. However, there may be a plurality of processors 11, and the plurality of processors 11 may cooperate to execute programs that implement each function. Similarly, only one processor 21 was shown in FIG. However, there may be a plurality of processors 21, and the plurality of processors 21 may cooperate to execute programs that implement each function.

***Description of operation***
The operation of the damage assessment system 100 according to the first embodiment will be described with reference to FIGS. 4 to 8. FIG.
The operation procedure of the damage assessment system 100 according to the first embodiment corresponds to the damage assessment method according to the first embodiment. A program that implements the operation of the damage assessment system 100 according to the first embodiment corresponds to the damage assessment program according to the first embodiment.
In particular, the operation procedure of the inundation height measuring device 10 in the damage assessment system 100 according to the first embodiment corresponds to the inundation height measuring method according to the first embodiment. A program for realizing the operation of the inundation height measuring device 10 in the damage assessment system 100 according to the first embodiment corresponds to the inundation height measurement program according to the first embodiment.

(Step S101 in FIG. 4: authentication processing)
The communication unit 111 of the inundation height measuring device 10 transmits the authentication information of the user of the inundation height measuring device 10 to the master management device 20 . In one embodiment, the user is a policyholder or adjuster of an insurance company. In Embodiment 1, it is assumed that the user is a policyholder.
Specifically, the communication unit 111 receives authentication information input by the user. The communication unit 111 transmits the accepted authentication information to the master management device 20 via the communication interface 14 . Then, the communication unit 211 of the master management device 20 receives the transmitted authentication information.

(Step S102 in FIG. 4: determination processing)
The determination unit 212 determines whether or not the authentication information received in step S101 is valid.
Specifically, the determination unit 212 refers to the user information 231 and determines whether or not the authentication information is valid. As shown in FIG. 5, the user information 231 includes authentication information for each user. For example, as shown in FIG. 5 , when the authentication information is a password, the determination unit 212 determines the set of the ID and password received as the authentication information and any ID and password included in the user information 231. If the set of passwords matches, it is determined that the authentication information is valid.

If it is determined that the authentication information is valid, the communication unit 211 transmits the authentication result indicating that the authentication was successful and the list information of the buildings linked to the user via the communication interface 24 to measure the inundation height. Send to device 10 . On the other hand, when it is determined that the authentication information is not valid, the communication unit 211 transmits an authentication result indicating that the authentication has failed to the inundation height measuring device 10 via the communication interface 24 . Then, the communication unit 111 of the inundation height measuring device 10 receives the transmitted authentication result. If the authentication result indicates successful authentication, the communication unit 111 also receives the list information.
When it is determined that the authentication information is valid, the communication unit 211 refers to the contract information 232 to identify the building associated with the user and generate list information. As shown in FIG. 6, the contract information 232 includes a user ID and building information for each policy number of the insurance contract. The building information includes identification information such as the location of the building, information about the building such as the total floor area, the floor area of each floor, the number of floors, and the presence or absence of a piloti. The communication unit 211 refers to the contract information 232 to identify the security number including the user ID of the successfully authenticated user, and extracts building identification information from the building information associated with the identified security number. Then, the communication unit 211 generates list information indicating the extracted identification information of the building.

When the authentication result received in step S102 indicates that the authentication has succeeded, the communication unit 111 advances the process to step S103. On the other hand, if the authentication result received in step S102 indicates that the authentication has failed, the communication unit 111 returns the process to step S101 to re-enter the authentication information.

(Step S103: Building designation process)
The communication unit 111 displays the list information on the display device and allows the user to select a building to be processed. The communication unit 111 transmits the identification information of the selected building to the master management device 20 via the communication interface 14 . Then, the communication unit 211 of the master management device 20 receives the transmitted building identification information.

(Step S104: Building information transmission process)
The communication unit 211 refers to the contract information 232 and extracts building information linked to the building identification information received in step S103. The communication unit 211 transmits the extracted building information to the inundation height measuring device 10 via the communication interface 24 . Then, the communication unit 111 of the inundation height measuring device 10 receives the transmitted building information.

(Step S105: Data Acquisition Processing)
The data acquisition unit 112 of the flooded height measuring device 10 uses the optical sensor 141 and the optical camera 142 to acquire data of a flooded building to be processed.
Specifically, the data acquisition unit 112 uses the optical sensor 141 to acquire point cloud data of the building to be processed, and uses the optical camera 142 to acquire image data of the building to be processed. The image data acquired here is called a target image. At this time, the data acquisition unit 112 acquires the point cloud data obtained by measuring the area from the ground to the upper limit of the flooded area of the building to be processed, and the target image obtained by photographing. The optical sensor 141 is a sensor that measures the position and luminance of a reflection point by radiating irradiation light and receiving the reflected light reflected by the reflection point. Here, the position of the reflection point is the relative position of the reflection point with respect to the position of the optical sensor 141 . The point cloud data is three-dimensional point cloud data composed of a plurality of point data indicating the position and brightness of each reflection point.
By acquiring data simultaneously with the optical sensor 141 and the optical camera 142, each of the plurality of point data constituting the point cloud data is associated with any pixel of the target image. That is, point data and pixels of the target image for the same position are associated with each other.

It should be noted that there are cases where the area of the building to be processed that includes the ground level and the upper limit of the flooded area cannot be photographed at once. In this case, the optical camera 142 may take a plurality of images while moving the inundation height measuring device 10 . For example, a plurality of pieces of image data may be acquired by the user moving the inundation height measuring device 10 while shooting with the optical camera 142 as in the case of shooting a moving image. At this time, the optical sensor 141 also measures the photographed area.
The data acquisition unit 112 identifies the amount of movement of the inundation height measuring device 10 at the time of photographing using an acceleration sensor or the like provided in the inundation height measuring device 10 . Based on the amount of movement, the data acquisition unit 112 synthesizes the measured point cloud data into one point cloud data, and synthesizes the image data obtained by photographing a plurality of times into one target image. . As a result, it is possible to acquire the point cloud data and the target image for the area including the ground to the upper limit position of the building to be processed.

(Step S106: Submerged area identification process)
The flooded range identifying unit 113 of the flooded height measuring device 10 identifies a flooded line indicating the upper limit position of the flooded area based on the target image acquired in step S105. In Embodiment 1, the submerged area identification unit 113 displays the target image on the display device and allows the user to designate the submerged upper limit position. The inundation range identification unit 113 accepts that the specified position is the position of the inundation line. In addition, if the inundation height measuring device 10 is a smart phone, the display device is the display of the smart phone.
Exterior walls of flooded buildings are discolored where they are soaked with water. The user confirms this discoloration, identifies the flood line, and designates the flood line portion. For example, if the inundation height measuring device 10 is a smartphone, the inundation line is specified by touching the inundation line portion displayed on the display.

In addition, the flooded area identification unit 113 identifies the ground surface of the building to be processed from the point cloud data acquired in step S105. Identifying a toposurface from point cloud data is feasible using existing techniques. For example, the ground surface can be specified by specifying the ground from changes in brightness of a plurality of point data that constitute the point cloud data. In addition, if mud accumulates near the building to be processed due to the effects of flooding, the ground surface can be specified by acquiring point cloud data and image data up to the area where mud has not accumulated. is possible.

(Step S107: Inundation height measurement process)
Based on the point cloud data acquired in step S105, the inundation height measurement unit 114 of the inundation height measurement device 10 measures the vertical direction with respect to the horizontal direction from the ground surface indicating the position of the ground to the inundation line indicating the upper limit position of the inundation. Measure the distance as the flood height.
Specifically, the inundation height measurement unit 114 identifies point data corresponding to the ground surface identified in step S106. The inundation height measurement unit 114 identifies point data corresponding to the inundation line identified in step S106. The inundation height measurement unit 114 measures the inundation height from the position indicated by the point data corresponding to the ground surface and the position indicated by the point data corresponding to the inundation line. Specifically, the inundation height is measured from the difference between the position indicated by the point data corresponding to the ground surface and the position indicated by the point data corresponding to the flood line.
At this time, the inundation height measurement unit 114 may identify the vertical direction from the point cloud data, or may identify the vertical direction using a sensor mounted on the inundation height measurement device 10 . For example, the inundation height measurement unit 114 may specify the horizontal direction by specifying the point data forming the ground from the point cloud data, and may specify the vertical direction with respect to the horizontal direction. In addition, the inundation height measurement unit 114 may specify a pillar or the like of a building from the point cloud data, and specify the longitudinal direction of the pillar as the vertical direction with respect to the horizontal direction.

(Step S108: height determination processing)
The height determination unit 115 of the flooded height measuring device 10 determines whether or not the flooded height measured in step S107 is equal to or higher than the reference height. Here, the reference height is 45 centimeters, which is a payment requirement for insurance claims.
If the inundation height is equal to or higher than the reference height, the height determination unit 115 determines that the insurance claim payment requirement is satisfied, and advances the process to step S109. On the other hand, if the inundation height is less than the reference height, the height determination unit 115 determines that the insurance claim payment requirements are not met, and terminates the process.

(Step S109: rate information request processing)
The communication unit 111 of the inundation height measuring device 10 transmits to the master management device 20 via the communication interface 14 request data requesting rate information for the building to be processed. The requested data includes the inundation height measured in step S107, the point cloud data and target image acquired in step S105, the information indicating the position of the inundation line specified in step S106, and the amount of insurance money calculated. and information indicating the damage status that can specify the rate for the damage.
Then, the communication unit 211 of the master management device 20 receives the transmitted request data.

(Step S110: rate information transmission process)
The communication unit 211 of the master management device 20 identifies the rate based on the request data received in step S109. Specifically, the communication unit 211 refers to the rate information 233 to identify the rate. As shown in FIG. 7, the rate information 233 includes a rate for each damage situation. The damage situation is the inundation rate of the building. Then, the communication unit 211 transmits rate data indicating the specified rate to the inundation height measuring device 10 via the communication interface 24 . Then, the communication unit 111 of the inundation height measuring device 10 receives the rate data.

(Step S111: insurance claim calculation processing)
The insurance claim calculation unit 116 of the inundation height measuring device 10 calculates the insurance payment amount based on the rate data received in step S110 and the building information received in step S104. The insurance claim calculation unit 116 displays the calculated payment amount on the display device.
The communication unit 111 transmits amount data indicating the calculated payment amount to the master management device 20 via the communication interface 14 . Then, the communication unit 111 of the master management device 20 receives the money amount data, and writes the payment amount indicated by the money amount data in the payment amount item of the accident information 234 .

As shown in FIG. 8, the accident information 234 includes the inundation height, acquired data, summary of the insured event, and payment amount for each building identification information and insured event number. In step S109, an insured accident number is assigned, and in correspondence with the identification information of the building to be processed and the assigned insured accident number, the flood height is written in the flood height item, and the point cloud data is written in the acquired data item. , the target image and the inundation line are written. In step S111, the payment amount indicated by the amount data is written in the payment amount item. A summary of the insured event will be filled in later by the assessor.

*** Effect of Embodiment 1 ***
As described above, the flooded height measuring device 10 according to the first embodiment measures the flooded height based on the point cloud data obtained by measuring with the optical sensor 141 . As a result, it is not necessary to photograph an object of known measure or size together with the flooded building, and the flood height can be easily measured.

When an object whose measure or size is known is photographed together with a flooded building to measure the flood height, the flood height may be disguised by disguising the object photographed together with the building. Therefore, the reliability of determining whether or not the insurance claim payment requirements are satisfied based solely on the image data taken by the policyholder has been low.
However, since the inundation height measuring device 10 according to Embodiment 1 measures the inundation height from point cloud data, camouflage is difficult. Therefore, it is highly reliable to determine whether or not the insurance claim payment requirements are satisfied based on the point cloud data acquired by the policyholder using the flood height measuring device 10 .

The user who uses the inundation height measuring device 10 is not limited to an insurance policyholder, and may be an assessor of an insurance company. If the user is an assessor of an insurance company, the building list information transmitted in step S102 indicates buildings for which assessment by the assessor is permitted.

***Other Configurations***
<Modification 1>
In Embodiment 1, each functional component is realized by software. However, as Modification 1, each functional component may be implemented by hardware. Differences between the first modification and the first embodiment will be described.

The configuration of the flooded height measuring device 10 according to Modification 1 will be described with reference to FIG. 9 .
When each functional component is implemented by hardware, the flood height measurement device 10 includes an electronic circuit 15 instead of the processor 11, memory 12 and storage 13. FIG. The electronic circuit 15 is a dedicated circuit that realizes the functions of each functional component, memory 12 and storage 13 .

The configuration of the master management device 20 according to Modification 1 will be described with reference to FIG.
When each functional component is realized by hardware, the master management device 20 has 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, memory 22 and storage 23 .

The electronic circuits 15 and 25 include single circuits, composite circuits, programmed processors, parallel programmed processors, logic ICs, GAs (Gate Arrays), ASICs (Application Specific Integrated Circuits), and FPGAs (Field-Programmable Gate Arrays). ) is assumed.
Each functional component may be implemented by one electronic circuit 15, 25, or each functional component may be implemented by being distributed among a plurality of electronic circuits 15, 25. FIG.

<Modification 2>
As a modification 2, some functional components may be implemented by hardware and other functional components may be implemented by software.

Processors 11 and 21, memories 12 and 22, storages 13 and 23, and electronic circuits 15 and 25 are called processing circuits. That is, the function of each functional component is realized by the processing circuit.

Embodiment 2.
Embodiment 2 differs from Embodiment 1 in that the inundation line is specified using a learned model. In the second embodiment, this different point will be explained, and the explanation of the same point will be omitted.

*** Configuration description ***
The configuration of the flooded height measuring device 10 according to the second embodiment will be described with reference to FIG. 11 .
The inundation height measuring device 10 differs from the inundation height measuring device 10 shown in FIG. 2 in that a learned model 131 is stored in the storage 13 . The learned model 131 is a model that infers the upper limit position of flooding from an input image that is image data of a flooded building.

***Description of operation***
The operation of the damage assessment system 100 according to the second embodiment will be described with reference to FIG.
The processing from step S101 to step S105 and the processing from step S107 to step S111 are the same as in the first embodiment.

(Step S106: Submerged area identification process)
The flooded range identifying unit 113 of the flooded height measuring device 10 identifies a flooded line indicating the upper limit position of the flooded area based on the target image acquired in step S105. In Embodiment 2, the inundation range identifying unit 113 uses the learned model 131 to identify the inundation line based on the target image acquired in step S105. Specifically, the flooded area identification unit 113 identifies the flooded upper limit position output from the trained model 131 as the flooded line by inputting the target image to the trained model 131 .

Also, the flooded area identifying unit 113 identifies the ground surface of the building to be processed from the point cloud data acquired in step S105, as in the first embodiment.

Here, the trained model 131 uses, as learning data, a set of building image data taken when an assessor of an insurance company measured the inundation height in the past and the position of the inundation line specified by the assessor. It is a model generated by learning. The position of the flood line specified by the assessor is the so-called correct data. That is, the trained model 131 is learned by supervised learning. For learning, for example, a neural network is used.

*** Effect of Embodiment 2 ***
As described above, the inundation height measuring device 10 according to Embodiment 2 uses the learned model 131 to identify the inundation line. This eliminates the need for the user to specify the flood line as in the first embodiment. Therefore, the flood height can be measured more easily than in the first embodiment.

***Other Configurations***
<Modification 3>
In Embodiment 2, the learned model 131 is stored in the storage 13 of the inundation height measuring device 10 . However, the learned model 131 may be stored in the storage 23 of the master management device 20, or may be stored in another device connected to the inundation height measuring device 10 via the transmission line 30. In this case, the inundation range identification unit 113 of the inundation height measuring device 10 reads the learned model 131 via the communication interface 14 and uses the learned model 131 when identifying the inundation line.
As a result, when the learned model 131 is updated by the master management device 20 or the like, the inundation line can be specified using the latest learned model 131 . Updating the learned model 131 means that learning is performed using new learning data. For example, when the legitimacy of the inundation line written in the accident information 234 is confirmed in step S109, a set of the inundation line and the target image used to identify the inundation line is given as learning data. Then, the trained model 131 is trained.

Embodiment 3.
Embodiment 3 differs from Embodiments 1 and 2 in that candidate positions of inundation lines identified using the learned model 131 are indicated and the inundation lines are specified. In the third embodiment, this different point will be explained, and the explanation of the same point will be omitted.
In Embodiment 3, points different from Embodiment 2 will be described.

*** Configuration description ***
The configuration of the flooded height measuring device 10 according to the third embodiment will be described with reference to FIG.
The inundation height measuring device 10 differs from the inundation height measuring device 10 shown in FIG. 11 in that a learning unit 117 is provided as a functional component. The learning unit 117 is realized by software or hardware, like other functional components.

***Description of operation***
The operation of the damage assessment system 100 according to the third embodiment will be described with reference to FIG.
The processing from step S101 to step S105 and the processing from step S107 to step S111 are the same as those in the second embodiment.

(Step S106: Submerged area identification process)
The flooded range identifying unit 113 of the flooded height measuring device 10 identifies a flooded line indicating the upper limit position of the flooded area based on the target image acquired in step S105. In Embodiment 3, the inundation area identifying unit 113 uses the learned model 131 to identify one or more candidate positions of the inundation line based on the target image acquired in step S105. Specifically, the submerged area identifying unit 113 inputs the target image to the learned model 131, and determines the submerged upper limit position output from the learned model 131, and the accuracy is higher than the threshold. The flooded upper limit position determined as is specified as a candidate position of the inundation line. The flooded area identification unit 113 identifies the flooded line by displaying the target image with the candidate positions indicated and accepting the designation of the flooded upper limit position in the target image. For example, the inundation area identification unit 113 identifies the inundation line by displaying each candidate position on the target image and allowing the user to select one of the candidate positions.

Also, the flooded area identifying unit 113 identifies the ground surface of the building to be processed from the point cloud data acquired in step S105, as in the second embodiment.

Every time the process of step S106 is executed or periodically, the learning unit 117 learns a set of the flood line identified in step S106 and the target image used to identify the flood line. As data, the learned model 131 is made to learn. As a result, the learned model 131 is updated.

*** Effect of Embodiment 3 ***
As described above, the inundation height measuring device 10 according to Embodiment 3 indicates the candidate positions of the inundation line identified by using the learned model 131, and designates the inundation line. Thereby, the inundation line can be specified more appropriately.
For example, if the walls of the building are dirty or the like, the learned model 131 may identify an erroneous position as the inundation line. However, in the flooded height measuring device 10 according to Embodiment 3, it is possible to correct such an error.

Also, in the inundation height measuring device 10 according to Embodiment 3, the learned model 131 is updated by the learning unit 117 . As a result, it is possible to gradually increase the accuracy of the trained model 131 . That is, in the flood height measuring device 10 according to the third embodiment, the user finally designates the flood line. Therefore, it is possible to perform learning using the specified inundation line as correct data.

Note that "unit" in the above description may be read as "circuit", "process", "procedure", "process", or "processing circuit".

The embodiments and modifications of the present disclosure have been described above. Some of these embodiments and modifications may be combined and implemented. Also, any one or some may be partially implemented. It should be noted that the present disclosure is not limited to the above embodiments and modifications, and various modifications are possible as necessary.

100 damage assessment system, 10 inundation height measurement device, 11 processor, 12 memory, 13 storage, 14 communication interface, 15 electronic circuit, 111 communication unit, 112 data acquisition unit, 113 inundation range identification unit, 114 inundation height measurement unit, 115 height determination unit, 116 insurance claim calculation unit, 117 learning unit, 131 learned model, 141 optical sensor, 142 optical camera, 20 master management device, 21 processor, 22 memory, 23 storage, 24 communication interface, 25 electronic circuit, 211 communication unit, 212 determination unit, 231 user information, 232 contract information, 233 rate information, 234 accident information, 30 transmission path.

Claims (10)

Obtained by measuring an area of a flooded building from the ground to the flooded upper limit position by an optical sensor that measures the position of the reflection point by irradiating irradiation light and receiving the reflected light reflected by the reflection point. a data acquisition unit that acquires point cloud data, which is a plurality of point data indicating positions of the reflection points;
Based on the point cloud data acquired by the data acquisition unit, the vertical distance from the ground surface indicating the position of the ground to the inundation line indicating the upper limit of the inundation is measured as the inundation height. A flood height measurement device comprising a height measurement unit. The data acquisition unit is a target image, which is image data of an area from which the point cloud data is acquired, and is image data in which each of the plurality of point data constituting the point cloud data is associated with a pixel. and get
The inundation height measuring device further comprises:
a submerged area identifying unit that identifies the submerged line based on the target image obtained by the data obtaining unit;
2. The inundation height measuring device according to claim 1, wherein the inundation height measuring unit measures a vertical distance from the ground surface to the inundation line specified by the inundation range specifying unit as the inundation height. 3. The inundation height measuring device according to claim 2, wherein the inundation range identifying unit identifies the inundation line by displaying the target image and receiving a designation of a flooded upper limit position in the target image. The inundation range identification unit identifies the inundation line based on the target image acquired by the data acquisition unit, using a trained model that infers the upper limit of flooding from an input image that is image data of a flooded building. The inundation height measuring device according to claim 2. The inundation range identification unit uses a trained model for inferring a flooded upper limit position from an input image that is image data of a flooded building, and the candidate for the inundation line based on the target image acquired by the data acquisition unit. 3. The inundation height measurement according to claim 2, wherein the inundation line is specified by specifying a position, displaying the target image with the candidate position indicated, and receiving a specification of a flooded upper limit position in the target image. Device. The inundation height measurement unit measures a position indicated by point data relating to the ground surface in the point cloud data acquired by the data acquisition unit, and point data relating to the inundation line in the point cloud data acquired by the data acquisition unit. 6. The inundation height measuring device according to any one of claims 1 to 5, wherein the inundation height is measured from the position indicated by . The inundation height measuring device further comprises:
The inundation height measuring device according to any one of claims 1 to 6, further comprising a height determination unit that determines whether or not the inundation height measured by the inundation height measurement unit is equal to or higher than a reference height. The inundation height measuring device further comprises:
8. The inundation height according to claim 7, further comprising an insurance money calculation unit that calculates an insurance money amount for flood damage related to the building when the height determination unit determines that the water inundation height is equal to or higher than the reference height. measuring device. The data acquisition unit detects an area of the flooded building from the ground to the flooded upper limit position by an optical sensor that measures the position of the reflection point by receiving the light reflected by the reflection point after irradiating the irradiation light. Acquiring point cloud data, which is a plurality of point data indicating the positions of the reflection points obtained by measurement,
Flood height measurement for measuring the vertical distance from the ground surface indicating the position of the ground to the flood line indicating the upper limit position of the flood as the flood height, based on the point cloud data. Method. Obtained by measuring an area of a flooded building from the ground to the flooded upper limit position by an optical sensor that measures the position of the reflection point by irradiating irradiation light and receiving the reflected light reflected by the reflection point. a data acquisition process for acquiring point cloud data, which is a plurality of point data indicating the positions of the reflection points;
Based on the point cloud data acquired by the data acquisition process, the vertical distance from the ground surface indicating the position of the ground to the inundation line indicating the upper limit of the inundation is measured as the inundation height. A flood height measurement program that causes a computer to function as a flood height measurement device that performs high-level measurement processing.

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