JP2022128897A - Water-level abnormality detection program and water-level abnormality detection device - Google Patents

Abstract

To provide a water-level abnormality detection program and a water-level abnormality detection device, that can easily detect abnormalities in a water level.SOLUTION: A water-level abnormality detection program PRG causes a computer to execute processing for detecting that there is an abnormality in a water level of an object area. The water-level abnormality detection program PRG causes the computer to function as: an image acquisition section that acquires a plurality of captured images in which the object area is captured; a segmentation execution section that identifies a water region in which water is displayed by executing segmentation processing on each of the plurality of captured images; a detection site setting section that sets a specific site in each of the plurality of captured images as a detection site; and an abnormality detection section that detects the existence of the abnormality in the water level of the object area when a positional relation between the water region and the detection site satisfies a preset detection condition in any of the plurality of captured images.SELECTED DRAWING: Figure 10

Description

The present disclosure relates to a water level abnormality detection program and a water level abnormality detection device.

A technique is known for monitoring the water level of a river or the like and detecting an abnormality in the water level. For example, in Patent Document 1, a water metering board with a scale for measuring the water level is installed in a river or the like, and the water level is monitored by imaging the water metering board and reading the scale corresponding to the water level. Techniques are disclosed.

JP 2016-090279 A

In the above-described technique, it is necessary to install a metering plate in advance in a river or the like where the water level is to be monitored, and furthermore, the state of the metering plate must be determined so that the installed metering plate can be clearly imaged. must always be managed. As described above, complicated work may be required when adopting the above-described technique.

Therefore, the water level abnormality detection program and the water level abnormality detection device according to the present disclosure aim to enable simple detection of an abnormality in the water level.

A water level abnormality detection program (PRG) according to one aspect of the present disclosure is a water level abnormality detection program (PRG) that causes a computer (10) to execute a process of detecting that there is an abnormality in the water level of the target area (A), , an image acquisition unit (11) for acquiring a plurality of captured images (FP) in which the target area (A) is captured, and a segmentation process for each of the plurality of captured images (FP). A segmentation execution unit (12) that identifies a water region (W) in which water is displayed by executing When the positional relationship between the water region (W) and the detection site (P) satisfies a preset detection condition in one of the plurality of captured images (FP) and the site setting unit (13), the target It functions as an abnormality detection section (15) that detects that there is an abnormality in the water level in the area (A).

A water level abnormality detection device (1) according to one aspect of the present disclosure is a water level abnormality detection device (1) that detects that there is an abnormality in the water level of a target area (A), and the target area (A) is imaged. and an image acquisition unit (11) for acquiring a plurality of captured images (FP), and a water area (W) in which water is displayed by performing segmentation processing on each of the plurality of captured images (FP). a segmentation execution unit (12) that identifies a plurality of captured images (FP), a detection site setting unit (13) that sets a specific site in each of a plurality of captured images (FP) as a detection site (P), and a plurality of captured images (FP ), when the positional relationship between the water area (W) and the detection part (P) satisfies a preset detection condition, an abnormality that detects that there is an abnormality in the water level of the target area (A) and a detection unit (15).

According to at least one of these water level abnormality detection program (PRG) and water level abnormality detection device (1), the water area (W) is identified in the captured image (FP) in which the target area (A) is captured, and identified An abnormality in the water level is detected based on whether or not the positional relationship between the detected water area (W) and the detection site (P) satisfies the detection conditions. That is, it is possible to monitor the water level without necessarily using a water metering plate or the like. Therefore, according to at least one of the water level abnormality detection program (PRG) and the water level abnormality detection device (1), it is possible to easily detect that there is an abnormality in the water level.

In the water level abnormality detection program (PRG) according to one aspect of the present disclosure, each of the plurality of captured images (FP) may be an image of the target area (A) captured from the same position. According to this, it is possible to apply the same detection site (P) and detection conditions to each of the plurality of captured images (FP). This simplifies the process and makes it possible to easily track changes in the water level over time.

In the water level abnormality detection program (PRG) according to one aspect of the present disclosure, each of the plurality of captured images (FP) may be images of the target area (A) captured at predetermined time intervals. According to this, it is possible to easily track changes in the water level over time.

In the water level abnormality detection program (PRG) according to one aspect of the present disclosure, the detection condition may be a condition regarding how the water area (W) and the detection site (P) overlap. According to this, it becomes possible to accurately detect that there is an abnormality in the water level.

In the water level abnormality detection program (PRG) according to one aspect of the present disclosure, the detection part (P) may be a linear or strip-shaped marking (Q). This simplifies the processing.

In the water level abnormality detection program (PRG) according to one aspect of the present disclosure, the detection part (P) includes a linear or strip-shaped marking (Q), and a graphic area ( R). According to this, since the process is executed based on the graphic area (R) wider than the marking (Q), it is possible to accurately detect that there is an abnormality in the water level.

In the water level abnormality detection program (PRG) according to one aspect of the present disclosure, the detection site setting unit (13) sets a plurality of detection sites (P) for each of the plurality of captured images (FP), and performs abnormality detection. A unit (15) detects the target area (A) when the positional relationship between the water region (W) and any of the detection parts (P) satisfies the detection condition in any of the plurality of captured images (FP). It may be detected that there is an abnormality in the water level of According to this, it is possible to determine the state of the water level in more detail, so that it is possible to accurately detect that there is an abnormality in the water level.

In the water level abnormality detection program (PRG) according to one aspect of the present disclosure, the detection site setting unit (13), when setting a plurality of detection sites (P) for each of a plurality of captured images (FP), A different level (LV) is set for each of the plurality of detection parts (P), and the abnormality detection unit (15) detects the water region (W) and any one of the When the positional relationship with the detection part (P) satisfies the detection condition, it is detected that the water level in the target area (A) has an abnormality of the level (LV) set for the detection part (P). good too. According to this, when it is detected that there is an abnormality in the water level, it is possible to know the level of the abnormality as well. For this reason, it becomes easy to judge the degree of urgency, etc., regarding an abnormality in the water level, for example.

A water level abnormality detection program (PRG) according to one aspect of the present disclosure causes a computer (10) to display a history (H) of abnormality detected by an abnormality detection unit (15) on an image display device (3). It may function as a history display unit (16) that generates history display data and outputs the generated history display data to the image display device (3). According to this, it is possible to easily trace the history of water level anomalies.

It should be noted that the reference numerals in parentheses above indicate the reference numerals of the constituent elements in the embodiment described later as an example of the present disclosure, and are not intended to limit the present disclosure to the aspect of the embodiment.

In this way, the water level abnormality detection program (PRG) and the water level abnormality detection device according to the present disclosure can easily detect that there is an abnormality in the water level.

FIG. 1 is a block diagram showing the functional configuration of the water level abnormality detection device according to this embodiment. FIG. 2 is a diagram showing a captured image in which a target area is captured. FIG. 3 is a diagram showing a segmentation image obtained by performing segmentation processing on a captured image. FIG. 4 is a diagram showing a marking setting screen for setting marking for a captured image. FIG. 5 is a diagram showing a graphic area corresponding to set markings. FIG. 6 is a diagram showing a list screen displaying a list of a plurality of captured images in which target areas are captured at predetermined time intervals. FIG. 7 is a diagram showing an anomaly display screen that enlarges and displays a captured image in which an anomaly in the water level has been detected. FIG. 8 is a diagram showing a history display screen that displays a history of detected abnormalities. FIG. 9 is a flow chart showing abnormality monitoring processing for monitoring water level abnormality. FIG. 10 is a diagram showing a water level abnormality detection program.

Exemplary embodiments are described below with reference to the drawings. In addition, the same reference numerals are given to the same or corresponding parts in each figure, and overlapping explanations are omitted.

[overall structure]
FIG. 1 is a block diagram showing the functional configuration of a water level abnormality detection device 1 according to this embodiment. The water level abnormality detection device 1 shown in FIG. 1 is a device realized by executing a water level abnormality detection program PRG by a computer 10 . The water level abnormality detection program PRG is a program that causes the computer 10 to execute processing for detecting that there is an abnormality in the water level of the target area A (see FIG. 10). First, the water level abnormality detection device 1 will be described.

Here, the "target area" means a river or the like whose water level is to be monitored, and may include the periphery of the river or the like. The object to monitor the water level is not limited to rivers as long as it is a place where water exists, and may be, for example, the sea, a lake, a dam, or the like. The “water level” means the surface position (or water depth) of water existing in the target area A. FIG. "Abnormality" means a state in which the water level deviates from the appropriate range in the target area A, and specifically includes cases where the water level is higher or lower than the appropriate range. The abnormal state may mean a state in which the water level deviates from the appropriate range in the target area A, or a state in which the water level tends to deviate.

The water level abnormality detection device 1 is configured as a computer 10 capable of communicating with an external terminal such as an imaging device 2 and an image display device 3, for example. The computer 10 of the water level abnormality detection device 1 has a control arithmetic device, a storage device, and an input/output device as physical components. The control arithmetic device is composed of a controller such as a CPU (Central Processing Unit), for example, and performs arithmetic processing and controls the storage device and the input/output device. The storage device has, for example, a main storage device and an auxiliary storage device. The main storage device is composed of, for example, a RAM (Random Access Memory). Also, the auxiliary storage device is composed of, for example, a ROM (Read Only Memory). The input/output device has, for example, an input device for receiving data from an external terminal and transmitting the data to the storage device, and an output device for outputting, for example, the result of computation performed by the control computation unit and stored in the storage device to the external terminal. is doing.

The water level abnormality detection device 1 executes a predetermined process by, for example, reading a program stored in a ROM into a RAM and executing the program read into the RAM by a CPU. Specifically, the water level abnormality detection device 1 reads the water level abnormality detection program PRG stored in the ROM into the RAM, and executes the water level abnormality detection program PRG read in the RAM by the CPU, thereby the water level of the target area A You may perform the process which detects that there exists abnormality in. The water level abnormality detection device 1 may have a configuration different from that of the computer 10 described above.

The imaging device 2 is a device that captures an image of the target area A and acquires the captured image FP. The imaging device 2 may be, for example, a camera. The imaging device 2 is arranged, for example, in the vicinity of the target area A toward the target area A (that is, in a direction that includes the target area A in the imaging range). The imaging device 2 captures images of the target area A multiple times to obtain multiple captured images FP. These multiple captured images FP are images of the target area A captured at the same angle. Note that the imaging device 2 may capture an image of the target area A at predetermined time intervals (for example, every 10 minutes or every hour). In other words, the captured images FP acquired by the imaging device 2 may be images of the target area A captured from the same position, or images of the target area A captured at predetermined time intervals. There may be.

The image display device 3 is a device that displays various images in addition to the captured image FP captured by the imaging device 2, for example. The image display device 3 may be, for example, a display. The image display device 3 receives information about an object whose water level is to be monitored from the water level abnormality detection device 1, and displays the input information as an image.

The computer 10 of the water level abnormality detection device 1 functionally includes an image acquisition unit 11, a segmentation execution unit 12, a detection site setting unit 13, a water level information display unit 14, an abnormality detection unit 15, and a history display unit 16. ing.

The image acquisition unit 11 acquires a plurality of captured images FP in which the target area A is captured. The image acquisition unit 11 acquires a plurality of captured images FP by inputting a plurality of captured images FP in which the target area A is captured by the imaging device 2 from the imaging device 2 . Specifically, the image acquiring unit 11 acquires a plurality of captured images FP in which the target area A is captured at predetermined time intervals from the same position. Here, FIG. 2 is a diagram showing a captured image FP in which the target area A is captured. FIG. 2 shows a captured image FP in which a bifurcated river is captured as the target area A. As shown in FIG. The image acquisition unit 11 acquires a plurality of captured images FP as shown in FIG. 2 as an example.

The segmentation execution unit 12 executes segmentation processing on each captured image FP acquired by the image acquisition unit 11 to identify water regions W in which water is displayed. The segmentation execution unit 12 generates a plurality of segmentation images FS corresponding to each captured image FP by executing segmentation processing. Here, FIG. 3 is a diagram showing a segmentation image FS obtained by performing segmentation processing on the captured image FP. FIG. 3 shows a water area W, which is an area (pixel area) in which river water is captured in the captured image FP of FIG.

“Segmentation” is also called image segmentation, and is a process of determining to which category each pixel in an image (captured image FP in this case) belongs by an image processing technique. The segmentation execution unit 12 performs segmentation processing on each captured image FP, extracts pixels belonging to the category of water among the pixels in each captured image FP, and divides the region where the extracted pixels are located into water. Let the area be W. Although semantic segmentation is adopted here as a specific method of segmentation, it is not necessarily limited to semantic segmentation, and a method such as instance segmentation may be adopted. Any method can be adopted for the specific processing contents of these various segmentations. The segmentation image FS is an image in which the captured image FP is subjected to segmentation processing and the category of each pixel (or at least a partial category of each pixel) in the captured image FP is designated. Yes, and can be regarded as a kind of captured image FP.

The detection site setting unit 13 sets a specific site in each captured image FP acquired by the image acquisition unit 11 as a detection site P. FIG. The “detection part” is a part on the captured image FP (or the segmentation image FS corresponding to the captured image FP) that is used as a reference when determining whether or not there is an abnormality in the water level of the target area A. be. As will be described later, when the positional relationship between the water region W and the detection site P in the captured image FP (or the segmentation image FS corresponding to the captured image FP) satisfies a preset detection condition, the target area A It is determined that there is an abnormality in the water level of The “specific part” set as the detection part P is, for example, the boundary line between the water area W and the area other than the water area W when the water level deviates from the appropriate range in the target area A. good.

FIG. 4 is a diagram showing a marking setting screen DQ for setting marking Q for the captured image FP. FIG. 5 is a diagram showing a graphic area R corresponding to the set marking Q. As shown in FIG. As shown in FIGS. 4 and 5, the detection site P is the marking Q and the graphic area R here. The marking Q as the detection site P has a linear or band shape, and here, three markings Q are set parallel to each other. That is, the detection site setting unit 13 sets a plurality of detection sites P in each captured image FP. When the detection site setting unit 13 sets a plurality of detection sites P (a plurality of markings Q) in each captured image FP, the plurality of detection sites P may not be set parallel to each other. For example, each detection site P may be set for different points on the river.

Also, the graphic region R as the detection site P presents a graphic (here, a rectangle) having the marking Q as a part of the outer edge. More specifically, the marking Q here corresponds to one side of the graphic area R having a rectangular shape. As shown in FIG. 5, when the graphic region R is a graphic having the marking Q as part of its outer edge, the marking Q may be part of the upper side of the outer edge of the graphic region R. For the sake of simplification of illustration, the graphic region R is not shown in FIG. 4, and in FIG. is described. In practice, similar graphic regions R may be set for all markings Q in FIGS.

The graphic area R does not necessarily have to be a rectangle having the marking Q as part of its outer edge. For example, the graphic region R may be a graphic (for example, a triangle, a pentagon, etc.) other than a rectangle having the marking Q as a part of its outer edge. Also, the graphic area R does not necessarily have the marking Q as part of the outer edge. For example, the graphic region R may be a graphic including all or part of the marking Q, or may be a graphic set at a position separated from the marking Q so as to satisfy a predetermined condition. The shape and the like of the graphic area R may be set and changed by the user's operation.

When setting a plurality of (here, three) detection sites P in each captured image FP, the detection site setting unit 13 may set different levels LV for the detection sites P. FIG. Here, the level LV of the lowest detection site P among the three detection sites P is set to level 1 (the lowest level of urgency regarding water level abnormality), and the three detection sites P Among the three detection sites P, the level LV of the central detection site P is set to level 2 (medium level of urgency regarding water level abnormality), and the uppermost detection site P of the three detection sites P The level LV is set to level 3 (the highest level of urgency regarding water level abnormality).

As described above, in the marking setting screen DQ shown in FIG. 4, one or a plurality of detection sites P are set at arbitrary sites on the captured image FP (or the segmentation image FS corresponding to the captured image FP). In addition, a level LV can be set for each detection site P. Further, as the detection site P, only the marking Q may be set, or in addition to the marking Q, the graphic area R may also be set.

The water level information display unit 14 outputs information about the object whose water level is to be monitored to the image display device 3 to display the information as an image (screen). The water level information display unit 14 generates image display data for displaying these images (screens) on the image display device 3 and outputs the generated image display data to the image display device 3 . The water level information display unit 14 causes the image display device 3 to display, for example, the captured image FP acquired by the image acquisition unit 11, the segmentation image FS generated by the segmentation execution unit 12, and the marking setting screen DQ.

Further, the water level information display unit 14 causes the image display device 3 to display a plurality of captured images FP in which the target area A is captured from the same position at predetermined time intervals in chronological order. FIG. 6 is a diagram showing a list screen DL displaying a list of a plurality of captured images FP obtained by capturing the target area A at predetermined time intervals. FIG. 7 is a diagram showing an abnormality display screen DW that enlarges and displays the captured image FP in which it has been detected that there is an abnormality in the water level. On the list screen DL shown in FIG. 6, the captured images FP are displayed in chronological order, such as from the left end of the top row to the right side, and after reaching the right end, from the left end of the lower row to the right side. ing.

A task bar T is attached to the lower part of each captured image FP. Each taskbar T has a name Ta, a history display button Tb, and a setting button Tc. The name Ta is information (character string) specifying the imaging device 2 that acquired (captured) the captured image FP. The history display button Tb is a button for displaying the history H of anomalies detected in the target area A related to the captured image FP. When the history display button Tb is operated, a history display screen DH, which will be described later, is displayed (see FIG. 8). The setting button Tc is a button for displaying a screen for changing the settings of the imaging device 2 that acquired (captured) the captured image FP. When the setting button Tc is operated, for example, a marking setting screen DQ is displayed.

In the list screen DL shown in FIG. 6, a warning display AL is displayed on the captured image FP displayed third from the left end of the top row. The warning display AL is a display indicating that the abnormality detection unit 15 has detected that there is an abnormality in the water level of the target area A in the captured image FP. In the list screen DL, when the captured image FP on which the warning display AL is displayed is selected, the list screen DL is switched to the abnormality display screen DW. In other words, in a state where the water level information display unit 14 causes the image display device 3 to display the list screen DL, when the captured image FP on which the warning display AL is displayed is selected, the water level information display unit 14 displays the 7 is displayed on the image display device 3 . The abnormality display screen DW enlarges and displays the selected captured image FP (the captured image FP displaying the warning display AL) in a new window NW (modal panel) so as to be superimposed on the display contents of the list screen DL. is the screen. In the abnormality display screen DW, the captured image FP enlarged and displayed in the new window NW is appended with an explanation NWa describing the content of the abnormality detected in the captured image FP.

The water level information display unit 14 may highlight and display the area determined by the abnormality detection unit 15 that the water area W and the detection site P overlap each other in the segmentation image FS. For example, the water level information display unit 14 may display the area by coloring it with a specific color.

The abnormality detection unit 15 detects that the water level in the target area A is abnormal based on the captured image FP. For example, the abnormality detection unit 15 monitors the water level of the target area A using the captured image FP, and detects that the water level of the target area A is abnormal when the water level changes from normal to abnormal. do. The abnormality detection unit 15 determines that there is an abnormality in the water level in the target area A when the positional relationship between the water region W and the detection site P satisfies a preset detection condition in any of the plurality of captured images FP. to detect.

Here, a plurality of detection parts P are set in each captured image FP by the detection part setting unit 13 . In such a case, the abnormality detection unit 15 detects the target area A when the positional relationship between the water region W and any detection site P satisfies the detection condition in any one of the plurality of captured images FP. You may detect that there is abnormality in the water level. In other words, even if the positional relationship between the water region W and the detection parts P does not necessarily satisfy the detection conditions for all the detection parts P, if at least one of the detection parts P satisfies the detection conditions, an abnormality is detected. The detection unit 15 may detect that the water level in the target area A is abnormal.

Also, here, different levels LV are set for the respective detection sites P set in the respective captured images FP. In such a case, the abnormality detection unit 15 detects the target area A when the positional relationship between the water region W and any detection site P satisfies the detection condition in any one of the plurality of captured images FP. It may be detected that the water level has an abnormality of the level LV set in the detection site P. For example, when the positional relationship between the water region W and the detection site P satisfies the detection condition for the detection site P whose level LV is set to level 1, the abnormality detection unit 15 It may be detected that there is a level 1 abnormality in the water level.

The detection condition may be a condition regarding how the water region W and the detection site P overlap. Specifically, the detection condition may be a condition relating to the coordinates or area of the area where the water area W and the detection site P overlap. For example, the detection condition is a state in which a portion occupying a predetermined proportion of the detection site P (the marking Q, the graphic region R, or the set of the marking Q and the graphic region R) overlaps the water region W (first state) may be realized. In this case, the predetermined percentage may be 100% or less than 100% (eg 95%). Alternatively, the detection condition may be that the marking Q as the detection site P and the boundary line between the water region W and the region other than the water region W overlap (second state). . Alternatively, the detection condition is such that the distance between the marking Q as the detection site P and the boundary line between the water region W and the region other than the water region W is equal to or less than a predetermined distance (third state). It may be to Alternatively, the detection condition is that the distance between the marking Q as the detection site P and the boundary line between the water area W and the area other than the water area W is equal to or greater than a predetermined distance (fourth state). It may be to According to the detection condition for the fourth state, it can be detected that there is an abnormality such as the water level in the target area A being too low.

Further, the detection condition may be that a predetermined state (for example, at least one of the first state, second state, third state, and fourth state) continues to be realized for a predetermined period of time. Alternatively, the detection condition may be that a predetermined state (for example, at least one of the first state, second state, third state, and fourth state) is realized a predetermined number of times.

More specifically, the abnormality detection unit 15 may determine whether the first state is realized based on the coordinate information in the captured image FP (or the segmentation image FS corresponding to the captured image FP). good. For example, the abnormality detection unit 15 may determine whether or not the first state is realized by approximately calculating the area of each region in the image using the triclinic method. Further, the abnormality detection unit 15 may determine whether or not the first state is realized by directly comparing the captured images FP (or the segmentation images FS corresponding to the captured images FP).

The history display unit 16 generates history display data for causing the image display device 3 to display the history H of the anomalies detected by the anomaly detection unit 15 , and outputs the generated history display data to the image display device 3 . FIG. 8 is a diagram showing a history display screen DH that displays a history H of detected abnormalities. The captured image FP of the target area A and the history H of anomalies detected by the anomaly detector 15 in the target area A are displayed on the history display screen DH. The anomaly history H includes the date and time when each anomaly was detected and the level LV of each detected anomaly. When the display of any history H is operated on the history display screen DH, the history display unit 16 causes the image display device 3 to display the captured image FP when the history H is detected.

[Error monitoring process]
An abnormality monitoring process executed by the water level abnormality detection device 1 will be described. FIG. 9 is a flow chart showing abnormality monitoring processing for monitoring water level abnormality. For example, the abnormality monitoring process shown in FIG. 9 is performed by the computer 10 of the water level abnormality detection device 1 in a state where the captured image FP including the target area A in the imaging range is acquired by the imaging device 2 (or in a state where it can be acquired). is started by executing the water level abnormality detection program PRG.

In step S10, the image acquisition unit 11 of the water level abnormality detection device 1 acquires a plurality of captured images FP by inputting a plurality of captured images FP in which the target area A is captured by the imaging device 2 from the imaging device 2. do. After that, the abnormality monitoring process proceeds to step S12.

In step S12, the segmentation execution unit 12 of the water level abnormality detection device 1 performs segmentation processing on each captured image FP acquired by the image acquisition unit 11 to identify the water region W where water is displayed. do. The segmentation execution unit 12 generates a plurality of segmentation images FS corresponding to each captured image FP by executing segmentation processing. After that, the abnormality monitoring process proceeds to step S14.

In step S<b>14 , the detection site setting unit 13 of the water level abnormality detection device 1 sets a specific site in each captured image FP acquired by the image acquisition unit 11 as the detection site P. For example, the detection site setting unit 13 sets the detection site P based on the user's operation on the marking setting screen DQ displayed on the image display device 3 by the water level information display unit 14 . After that, the abnormality monitoring process proceeds to step S16.

In step S16, the abnormality detection unit 15 of the water level abnormality detection device 1 starts to determine whether or not the water level of the target area A is abnormal. For example, every time the image acquisition unit 11 acquires a new captured image FP, the abnormality detection unit 15 determines whether or not there is an abnormality in the water level of the target area A based on the captured image FP. Specifically, the abnormality detection unit 15 determines whether or not the positional relationship between the water region W and the detection site P satisfies a preset detection condition in each captured image FP. After that, the abnormality monitoring process proceeds to step S18.

In step S18, the abnormality detection unit 15 of the water level abnormality detection device 1 determines that the positional relationship between the water region W and the detection site P satisfies a preset detection condition in any of the captured images FP. In this case, it is detected that there is an abnormality in the water level of the target area A. Thus, the abnormality monitoring process executed by the water level abnormality detection device 1 ends. After the abnormality monitoring process is completed, the water level abnormality detection device 1 uses the water level information display unit 14 and the history display unit 16 to display information about the captured image FP in which an abnormality in the water level is detected (for example, The image display device 3 may display a captured image FP or a segmentation image FS in which it is detected that there is an abnormality, a history H of detected abnormalities, or the like.

[Water level abnormality detection program]
A water level abnormality detection program PRG for causing the computer 10 to function as the water level abnormality detection device 1 will be described. FIG. 10 is a diagram showing the water level abnormality detection program PRG. The water level abnormality detection program PRG shown in FIG. 10 is a program that causes the computer 10 to execute processing for detecting that the water level of the target area A is abnormal.

The water level abnormality detection program PRG includes a main module M0, an image acquisition module M1, a segmentation execution module M2, a detection site setting module M3, a water level information display module M4, an abnormality detection module M5, and a history display module M6. . The main module M0 is a part that controls the computer 10 in an integrated manner. A function realized by executing each of the image acquisition module M1, the segmentation execution module M2, the detection site setting module M3, the water level information display module M4, the abnormality detection module M5, and the history display module M6 is the water level abnormality detection device. 1, the image acquisition unit 11, the segmentation execution unit 12, the detection site setting unit 13, the water level information display unit 14, the abnormality detection unit 15, and the history display unit 16. It should be noted that the water level abnormality detection program PRG may not include some of the modules described above other than the main module M0.

[Action and effect]
As described above, the water level abnormality detection program PRG is a water level abnormality detection program PRG that causes the computer 10 to execute processing for detecting that the water level in the target area A is abnormal. An image acquisition unit 11 that acquires a plurality of captured images FP, and a segmentation execution unit that performs segmentation processing on each of the plurality of captured images FP to identify a water region W in which water is displayed. 12, a detection site setting unit 13 that sets a specific site in each of a plurality of captured images FP as a detection site P, and a water region W and a detection site P in any of the plurality of captured images FP. It functions as an abnormality detection unit 15 that detects that there is an abnormality in the water level of the target area A when the positional relationship satisfies a preset detection condition.

The water level abnormality detection device 1 is a water level abnormality detection device 1 that detects that there is an abnormality in the water level of the target area A, and an image acquisition unit 11 that acquires a plurality of captured images FP in which the target area A is captured; A segmentation execution unit 12 that performs segmentation processing on each of the plurality of captured images FP to identify a water region W in which water is displayed, and a segmentation execution unit 12 that detects a specific part in each of the plurality of captured images FP. When the positional relationship between the water region W and the detection site P satisfies a predetermined detection condition in any one of the detection site setting unit 13 set as the site P and the plurality of captured images FP, the target area A and an abnormality detection unit 15 that detects that there is an abnormality in the water level of.

According to at least one of the water level abnormality detection program PRG and the water level abnormality detection device 1, the water area W is identified in the captured image FP in which the target area A is captured, and the identified water area W and the detection site P are detected. It is detected that there is an abnormality in the water level based on whether the positional relationship between and satisfies the detection conditions. That is, it is possible to monitor the water level without necessarily using a water metering plate or the like. Therefore, according to at least one of the water level abnormality detection program PRG and the water level abnormality detection device 1, it is possible to easily detect that there is an abnormality in the water level.

In the water level abnormality detection program PRG, each of the plurality of captured images FP is an image of the target area A captured from the same position. According to this, it is possible to apply the same detection site P and detection conditions to each of the plurality of captured images FP. This simplifies the process and makes it possible to easily track changes in the water level over time.

In the water level abnormality detection program PRG, each of the plurality of captured images FP is an image of the target area A captured at predetermined time intervals. According to this, it is possible to easily track changes in the water level over time.

In the water level abnormality detection program PRG, the detection condition is a condition regarding how the water region W and the detection site P overlap. According to this, it becomes possible to accurately detect that there is an abnormality in the water level.

In the water level abnormality detection program PRG, the detection site P is a linear or belt-like marking Q. As shown in FIG. This simplifies the processing.

In the water level abnormality detection program PRG, the detection site P is a linear or strip-shaped marking Q and a graphic area R having the marking Q as part of the outer edge. According to this, since the process is executed with reference to the graphic area R wider than the marking Q, it is possible to accurately detect that there is an abnormality in the water level.

In the water level abnormality detection program PRG, the detection site setting unit 13 sets a plurality of detection sites P in each of the plurality of captured images FP, and the abnormality detection unit 15 detects water in any of the plurality of captured images FP. When the positional relationship between the region W and any detection site P satisfies the detection conditions, it is detected that the water level in the target area A is abnormal. According to this, it is possible to determine the state of the water level in more detail, so that it is possible to accurately detect that there is an abnormality in the water level.

In the water level abnormality detection program PRG, the detection part setting unit 13 sets different levels LV for each of the plurality of detection parts P when setting the plurality of detection parts P for each of the plurality of captured images FP. Then, when the positional relationship between the water area W and any detection site P satisfies the detection condition in any of the plurality of captured images FP, the abnormality detection unit 15 changes the water level of the target area A to the detection purpose It is detected that the part P has an abnormality of the level LV set. According to this, when it is detected that there is an abnormality in the water level, it is possible to know the level of the abnormality as well. For this reason, it becomes easy to judge the degree of urgency, etc., regarding an abnormality in the water level, for example.

The water level abnormality detection program PRG causes the computer 10 to generate history display data for displaying the history H of abnormality detected by the abnormality detection unit 15 on the image display device 3, and displays the generated history display data on the image display device. 3 to function as a history display unit 16. According to this, it is possible to easily trace the history of water level anomalies.

[Modification]
The above-described embodiments can be implemented in various forms modified or improved based on the knowledge of those skilled in the art.

For example, in the above-described embodiment, the abnormality detection unit 15 detects the target area A when the positional relationship between the water region W and any detection site P satisfies the detection condition in any one of the plurality of captured images FP. Detects that there is an abnormality in the water level of However, if the positional relationship between the water region W and any detection site P satisfies the detection condition in all of the plurality of captured images FP, the abnormality detection unit 15 determines that the water level in the target area A is abnormal. may be detected.

1 water level abnormality detection device 3 image display device 10 computer 11 image acquisition unit 12 segmentation execution unit 13 detection site setting unit 15 abnormality detection unit 16 history display unit A target area FP captured image H history LV level P detection site PRG water level abnormality Detection program Q Marking R Graphic area W Water area

Claims (10)

A water level abnormality detection program that causes a computer to execute processing for detecting that there is an abnormality in the water level of a target area,
said computer,
an image acquisition unit that acquires a plurality of captured images in which the target area is captured;
a segmentation execution unit that identifies a water region in which water is displayed by executing segmentation processing on each of the plurality of captured images;
a detection site setting unit that sets a specific site in each of the plurality of captured images as a detection site;
Abnormality detection for detecting an abnormality in the water level in the target area when the positional relationship between the water area and the detection site satisfies a preset detection condition in any of the plurality of captured images. A water level abnormality detection program that functions as a part. The water level abnormality detection program according to claim 1, wherein each of the plurality of captured images is an image of the target area captured from the same position. The water level abnormality detection program according to claim 1 or 2, wherein each of the plurality of captured images is an image of the target area captured at predetermined time intervals. 4. The water level abnormality detection program according to any one of claims 1 to 3, wherein the detection condition is a condition regarding how the water area and the detection part overlap. The water level abnormality detection program according to any one of claims 1 to 4, wherein the detection part is a linear or strip-shaped marking. The water level abnormality detection program according to any one of claims 1 to 4, wherein the detection site is a linear or band-shaped marking and a graphic area having the marking as a part of the outer edge. The detection site setting unit sets a plurality of the detection sites for each of the plurality of captured images,
The abnormality detection unit detects an abnormality in the water level in the target area when the positional relationship between the water area and any of the detection parts satisfies the detection condition in any one of the plurality of captured images. The water level abnormality detection program according to any one of claims 1 to 6, which detects that there is a water level abnormality. When setting a plurality of detection parts for each of the plurality of captured images, the detection part setting unit sets different levels for each of the plurality of detection parts,
The abnormality detection unit detects the water level in the target area when the positional relationship between the water area and any of the detection parts satisfies the detection condition in any one of the plurality of captured images. 8. The water level abnormality detection program according to claim 7, which detects that there is an abnormality of the level set in the water portion. The computer as a history display unit that generates history display data for displaying a history of anomalies detected by the anomaly detection unit on an image display device, and outputs the generated history display data to the image display device. The water level abnormality detection program according to any one of claims 1 to 8, which is operated. A water level abnormality detection device that detects that there is an abnormality in the water level of a target area,
an image acquisition unit that acquires a plurality of captured images in which the target area is captured;
a segmentation execution unit that identifies a water region in which water is displayed by executing segmentation processing on each of the plurality of captured images;
a detection site setting unit that sets a specific site in each of the plurality of captured images as a detection site;
Abnormality detection for detecting an abnormality in the water level in the target area when the positional relationship between the water area and the detection site satisfies a preset detection condition in any of the plurality of captured images. A water level abnormality detection device comprising:

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