JP7059650B2 - How to diagnose the tarpaulin - Google Patents

Description

The present invention is a method for diagnosing a waterproof sheet for evaluating the deterioration state of the waterproof sheet laid in a building.

As a method for inspecting a building roofing material, there is a method of photographing the building roofing material and evaluating the degree of deterioration by separating the deteriorated part and the sound part by using the difference in color of the photographed image (for example, Patent Document 1). ). In this method, the degree of deterioration of the roofing material can be objectively determined as compared with the case of visual determination. According to Patent Document 1, when photographing a building roofing material, for example, in addition to using a crane or an aerial work platform, it is possible to photograph from the sky using a flying object. If you don't have to work at height, you can inspect the roofing material more safely.

However, when the degree of deterioration is evaluated by using the difference in the color of the captured image, there is a problem that the evaluation accuracy of the degree of deterioration is lowered because the color changes depending on the shooting environment and the setting of the camera. Therefore, for example, an 18% gray color known body is prepared, a color known body is photographed together with the building roof material, and the color of the image is corrected based on the color known body in the photographed image. A technique for improving accuracy has been proposed (for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 07-318510 Japanese Unexamined Patent Publication No. 2014-21371

However, the above-mentioned diagnostic method for roofing materials requires going to the site to take images, and in order to take pictures of roofing materials from above, equipment that enables high-altitude photography is required. , It took time and cost to make a diagnosis.

By the way, in recent years, aerial photograph images of a wide range of areas have been provided on the Internet together with a map information service, and such aerial photograph images can sufficiently distinguish the color of the roof of a building.

Therefore, the present invention provides a method for diagnosing a waterproof sheet for evaluating the deterioration status of a waterproof sheet laid in a building by using an aerial photograph image originally provided without taking a picture by itself or going to the site. The purpose is.

The method for diagnosing a waterproof sheet of the present invention is a method for diagnosing a waterproof sheet laid in a building, and is an image acquisition that acquires an aerial photograph image including the target building and a white road sign based on the position information of the target building. The process, the image color information acquisition step of acquiring the image color information which is the color information of the waterproof sheet of the target building from the aerial photograph image, and the correction color which is the color information of the white road marking from the aerial photograph image. Based on the difference between the correction color information acquisition process for acquiring information and the reference color information which is the original color of the white road sign and the correction color information, the image color information is corrected and the evaluation target color information is obtained. A correction step for acquiring the above and an evaluation step for evaluating the deterioration status of the waterproof sheet of the target building based on the information including the evaluation target color information are provided, and the waterproofing laid in the building in advance for each building is provided. The product color information, which is the product's original color information of the sheet, is stored in the database, and the evaluation step comprises the product color information of the waterproof sheet of the target building and the evaluation target color information stored in the database. It is characterized in that it is a step of evaluating the deterioration state of the waterproof sheet of the target building based on the difference .

The method for diagnosing a waterproof sheet of the present invention is a method for diagnosing a waterproof sheet laid in a building, and is an image acquisition that acquires an aerial photograph image including the target building and a white road sign based on the position information of the target building. The process, the image color information acquisition step of acquiring the image color information which is the color information of the waterproof sheet of the target building from the aerial photograph image, and the correction color which is the color information of the white road marking from the aerial photograph image. Based on the difference between the correction color information acquisition process for acquiring information and the reference color information which is the original color of the white road sign and the correction color information, the image color information is corrected and the evaluation target color information is obtained. The color change and performance of each waterproof sheet product are provided with a correction process for acquiring the color and an evaluation process for evaluating the deterioration status of the waterproof sheet of the target building based on the information including the evaluation target color information. Color performance-related data showing a correlation with deterioration is accumulated in a database, and the evaluation process determines the deterioration status of the waterproof sheet of the target building based on the evaluation target color information and the color performance-related data. It is characterized by being an evaluation process .

The method for diagnosing a waterproof sheet of the present invention is a method for diagnosing a waterproof sheet laid in a building, and is an image acquisition that acquires an aerial photograph image including the target building and a white road sign based on the position information of the target building. The process, the image color information acquisition step of acquiring the image color information which is the color information of the waterproof sheet of the target building from the aerial photograph image, and the correction color which is the color information of the white road marking from the aerial photograph image. Based on the difference between the correction color information acquisition process for acquiring information and the reference color information which is the original color of the white road sign and the correction color information, the image color information is corrected and the evaluation target color information is obtained. The correction step includes the correction step of evaluating the deterioration state of the waterproof sheet of the target building based on the information including the evaluation target color information, and the correction step includes the reference color information and the said. The image color information is corrected based on the difference in brightness of the correction color information to acquire the evaluation target color information, and the evaluation step is based on the information indicating the brightness of the evaluation target color information. It is characterized in that it evaluates the deterioration state of the waterproof sheet of the target building .

The method for diagnosing a waterproof sheet of the present invention is a method for diagnosing a waterproof sheet laid in a building, and is an image acquisition that acquires an aerial photograph image including the target building and a white road sign based on the position information of the target building. The process, the image color information acquisition step of acquiring the image color information which is the color information of the waterproof sheet of the target building from the aerial photograph image, and the correction color which is the color information of the white road marking from the aerial photograph image. Based on the difference between the correction color information acquisition process for acquiring information and the reference color information which is the original color of the white road sign and the correction color information, the image color information is corrected and the evaluation target color information is obtained. The image color information acquisition step includes an evaluation step of evaluating the deterioration state of the waterproof sheet of the target building based on the information including the evaluation target color information, and the image color information acquisition step is the target building. It is characterized in that the color information of the light-colored portion of the waterproof sheet is acquired as image color information .

In the method for diagnosing a waterproof sheet of the present invention, in addition to the above-mentioned features, the image color information acquisition step and the correction color information acquisition step obtain image color information and correction color information in the sunlit area directly exposed to sunlight, respectively. It is characterized by acquiring.

According to the method for diagnosing the waterproof sheet of the present invention, it is obtained from the aerial photograph image based on the difference between the standard color information which is the original color of the white road sign and the corrected color information of the white road sign acquired from the aerial photograph image. Since the image color information of the waterproof sheet is corrected to acquire the evaluation target color information and the deterioration status of the waterproof sheet is evaluated based on the information including the evaluation target color information, the aerial photograph image acquired in the image acquisition process is If the target building and the white road sign are included, it is not necessary to specify conditions such as the shooting environment and camera settings. That is, since the color change of the aerial photograph image caused by the difference in the shooting environment and the camera setting is corrected in the correction process, the diagnostician does not take a picture by himself and does not go to the site, for example, on the Internet. The aerial photograph image provided can be used to accurately evaluate the deterioration status of the waterproof sheet laid in the building.

According to the method for diagnosing the tarpaulin of the present invention, the product color information, which is the original color information of the tarpaulin product, is stored in the database for each building. Therefore, if the target building to be diagnosed is specified, the product color information is acquired. Since the difference between this product color information and the evaluation target color information represents the color change of the waterproof sheet over time, it is possible to objectively evaluate the deterioration status of the waterproof sheet of the target building. ..

According to the method for diagnosing the waterproof sheet of the present invention, the degree of performance deterioration of the evaluation target color information is determined based on the color performance-related data showing the correlation between the color change of the waterproof sheet and the performance deterioration. The deterioration status of the sheet can be objectively evaluated.

According to the diagnostic method of the waterproof sheet of the present invention, the image color information is corrected based on the difference in brightness between the reference color information and the correction color information, so that the correction process becomes extremely simple and the evaluation process is the evaluation target color information. Since the deterioration status of the waterproof sheet is evaluated based on the information indicating the brightness of the above, the deterioration status of the waterproof sheet can be easily and accurately determined.

According to the method for diagnosing the waterproof sheet of the present invention, since the image color information and the color information for correction are obtained in the Hinata area, the influence of shadows can be eliminated in the diagnosis of the waterproof sheet, and the waterproof sheet can be more accurately diagnosed. Deterioration status can be determined.

According to the method for diagnosing the waterproof sheet of the present invention, the image color information is the color information of the light-colored portion of the waterproof sheet of the target building. At the beginning of construction, dust adheres to the waterproof sheet due to static electricity, and the color gradually darkens. After a certain number of years, the waterproof sheet becomes lighter due to discoloration due to aging. Therefore, it is presumed that the light-colored part of the waterproof sheet is the part that deteriorates most quickly over time, and by determining the deterioration status of the waterproof sheet based on the image color information of this light-colored part, the deterioration of the waterproof sheet progresses most. It is possible to determine the deterioration status of the part that is exposed.

A block diagram showing an example of a system that implements a method of diagnosing a tarpaulin. The flowchart which shows the process of the diagnosis method of a waterproof sheet. A list diagram schematically showing the contents of the building list information. The figure which shows an example of the aerial photograph image displayed on the display of a PC in the image color information acquisition process. The figure which shows an example of the aerial photograph image displayed on the display of a PC at the time of a correction color information acquisition process. The figure which shows the color information of the Lab color system for each waterproof sheet schematically showing the product color information for each sheet. A line graph showing color performance-related data showing the correlation between the color change of the waterproof sheet and the performance deterioration.

Hereinafter, embodiments of the method for diagnosing a waterproof sheet according to the present invention will be described with reference to each figure. The method for diagnosing the waterproof sheet is a method for diagnosing the waterproof sheet for evaluating the state of aging deterioration of the waterproof sheet 13 laid on the roof portion 2 of the building. The "roof portion" in the present invention is a surface structure open toward the sky, such as a flat roof, a sloped roof, a balcony floor, and an eave, and a waterproof sheet 13 is laid on the upper surface thereof. As shown in FIG. 1, the system for executing the diagnostic method of the waterproof sheet includes a database 3 in which information is stored in advance, a PC 4 (personal computer) connected to the database 3, and the PC 4 via the Internet 5. Includes an aerial photograph image providing server 6 that can be connected to the computer.

Further, in the database 3, the building name, the position information for each building, the product name of the waterproof sheet 13 used for the building, and the construction date of the waterproof treatment of the roof portion 2 are stored in association with each other. 7, the product color information 8 for each sheet that stores the product color information for each product name of the waterproof sheet 13, and the color performance-related data 9 that shows the correlation between the color change and the performance deterioration for each product of the waterproof sheet 13. Each is remembered. Since the product name of the waterproof sheet 13 is stored in the building list information 7, and the product color information is stored for each product name of the waterproof sheet 13 in the product color information 8 for each sheet, the building list information 7 and the sheet are stored. By referring to the separate product color information 8, the product color information of the waterproof sheet 13 for each target building 1 can be acquired.

As a method for diagnosing the waterproof sheet, as shown in FIG. 2, first, the target building 1 for diagnosing the waterproof sheet 13 is determined (S20), and then an image acquisition step (S21) for acquiring an aerial photograph image 12 of the target building 1. ), The image color information acquisition step (S22) for acquiring the image color information of the waterproof sheet 13 from the aerial photograph image 12, and the correction for acquiring the correction color information which is the color information of the white road marking 10 from the aerial photograph image 12. The correction step (S24) for correcting the image color information and obtaining the evaluation target color information based on the difference between the color information acquisition step (S23) and the reference color information and the correction color information of the white road marking 10, and the evaluation. The evaluation step (S25) for evaluating the deterioration state of the waterproof sheet 13 based on the information including the target color information is sequentially executed.

In the step (S20) of determining the target building 1, as shown in FIG. 3, the operator operates the PC 4 to access the building list information 7 of the database 3, and the building requires the diagnosis of the deterioration status of the waterproof sheet 13. To extract. Specifically, a building that has passed a predetermined period from the construction date of the roof waterproofing treatment is extracted as the target building 1 that requires diagnosis of the deterioration status of the waterproof sheet 13.

Next, in the image acquisition step (S21), the aerial photograph image 12 including the target building 1 and the white road sign 10 is acquired from the aerial photograph image providing server 6 via the Internet 5. Specifically, the aerial photograph image 12 including the corresponding target building 1 is displayed on the display of the worker's PC4 based on the position information of the target building 1, or the displayed aerial photograph image 12 is stored in the storage unit of the PC4. Save to. The position information is, for example, an address in the present embodiment as shown in FIG. 3, but may indicate the position of the target building 1 by longitude and latitude. The aerial photograph image providing server 6 is a conventionally known service in which the aerial photograph image 12 is provided on the Internet 5. The aerial photograph image 12 may be taken from an aircraft, a drone, an artificial satellite, or any other flying object, but at least the roof portion 2 of the target building 1 must have an identifiable resolution.

It is desirable that the aerial photograph image 12 to be acquired has a clear shooting date, but since the waterproof sheet 13 changes its color over a long period of time, it suffices if the shooting date can be estimated within a range of, for example, about one year. Further, it is preferable that the aerial photograph image 12 to be acquired has a new shooting date, but even if the shooting date is somewhat old, the deterioration status of the waterproof sheet 13 at the time of shooting can be evaluated, so that the shooting date can be evaluated. By considering the number of years since then, the deterioration status of the waterproof sheet 13 at the present time can be estimated.

In the present invention, the "white road marking" includes lines, symbols or characters drawn on the road surface with white paint among the road markings stipulated in the Road Traffic Law, and other than that, the ground other than the road. Includes white paint lines, symbols or letters drawn on. For example, a white paint line indicating the stopping range of a car drawn in a parking lot on private land is also included.

When the aerial photograph image 12 is acquired by the image acquisition step, the image color information acquisition step (S22) is then performed. In the image color information acquisition step, the image color information which is the color information of the waterproof sheet 13 of the target building 1 is acquired from the aerial photograph image 12 acquired in the image acquisition step. Specifically, first, the image editing software installed in the PC 4 is started, the area where the waterproof sheet 13 is displayed is selected, and the numerical value of the color component of, for example, the RBG color system in the area is set. Extract. More specifically, as shown in FIG. 4, the mouse pointer P is moved to the area where the waterproof sheet 13 is displayed, and the RBG values of one or a plurality of points on the screen are extracted by clicking the mouse pointer P. , Get the average value of each. Alternatively, a certain range A in the area where the waterproof sheet 13 is displayed is selected, and the average value of each RBG in the range A is acquired.

Then, the acquired numerical value of the color component of RBG is converted into the coordinates of the L ^* a ^* b ^* color system to acquire the image color information. The numerical values of the L ^* a ^* b ^* color system are represented by "L ^* , a ^* , b ^* ", but in this embodiment, the star symbol is omitted for the sake of simplicity. Further, the reason why the numerical value of the RBG color system is converted to the Lab color system is to easily quantify the lightness. In the Lab color system, the L value represents the lightness. The "image color information" in the present invention corresponds to the numerical value of the Lab color system in the present embodiment, but is not limited to this, and may be any color system capable of quantifying the brightness. If the image editing software to be used is compatible with the Lab color system, the numerical value of the Lab color system may be directly acquired from the aerial photograph image 12 without going through the RBG color system.

The color of the waterproof sheet 13 does not change uniformly over time, and the degree of progress of deterioration over time varies depending on the difference in parts such as the overlapping margin part and the general part of the sheet and the difference in the environment. It changes so that color unevenness occurs. Therefore, the obtained image color information differs depending on whether the color information of the dark color portion or the color information of the light color portion is acquired in the image color information acquisition step. In the image color information acquisition process, one of the color information of the dark part of the waterproof sheet 13, the color information obtained by averaging the color information of the dark part and the color information of the light color part, and the color information of the light color part is obtained. Acquired as image color information. Preferably, the image information acquisition step acquires the color information of the light-colored portion of the waterproof sheet 13 as the image color information. The waterproof sheet 13 is gray at the beginning of construction, but dust adheres to it due to static electricity and gradually becomes dark gray, and after a certain number of years, it becomes whitish and light gray due to deterioration over time. .. Therefore, the portion where the deterioration over time has progressed becomes a pale gray light-colored portion. Therefore, it is presumed that the light-colored portion of the waterproof sheet 13 has the fastest deterioration over time, and the deterioration status of the waterproof sheet 13 is determined based on the image color information of the light-colored portion. It is possible to determine the deterioration status of the portion where deterioration is progressing.

After completing the image color information acquisition step, the correction color information acquisition step (S23) is then performed. In the correction color information acquisition step, the correction color information which is the color information of the white road marking 10 is acquired from the aerial photograph image 12. That is, as shown in FIG. 5, the area where the white road marking 10 of the aerial photograph image 12 is displayed is designated by, for example, clicking the mouse pointer P, the color information in the area is acquired, and the Lab color system. Get the number of. Since the specific processing is the same as the processing in the image color information acquisition step described above, the description thereof will be omitted. The order in which the image color information acquisition step and the correction color information acquisition step are executed may be reversed.

It is preferable that the image color information and the correction color information acquired in the image color information acquisition step and the correction color information acquisition step are the image color information and the correction color information of the sunlit area 11 directly exposed to sunlight, respectively. The "Hyuga area" refers to an area where sunlight is not blocked by surrounding trees and structures at the time of taking the aerial photograph image 12. By using the image color information and the correction color information of the Hinata region 11 in this way, the influence of the shadow on the diagnosis of the waterproof sheet 13 can be eliminated, and the deterioration status of the waterproof sheet 13 can be determined more accurately. When the sunlight is blocked by clouds on the entire surface of the aerial photograph image 12, such as when the weather at the time of taking the aerial photograph image 12 is cloudy, the image color information acquisition process and the color information for correction are used. The acquisition step may be to acquire image color information and correction color information in a region where sunlight is blocked by clouds.

After completing the image color information acquisition step and the correction color information acquisition step, the correction step (S24) is performed next. In the correction step, first, it is acquired in the image color information acquisition step (S21) based on the difference between the correction color information acquired in the correction color information acquisition step and the reference color information which is the original color of the white road marking 10. The image color information is corrected and the evaluation target color information is acquired.

The reference color information, which is the color of the main body of the white road marking 10, is a numerical value of the Lab color system of the color originally possessed by the white road marking 10. The reference color information is, for example, (L, a, b) = (100,0,0). Further, the correction color information is also represented by the numerical value of the Lab color system. In the present embodiment, in the correction step, the L value of the reference color information and the correction color information is extracted and the difference is obtained. Specifically, if the correction color information is (L, a, b) = (98, 1, -3), the L value of the reference color information is "100" and the correction color information is L. The value "2" which is the difference from the value "98" is acquired. That is, when the L value that should originally be 100 is 98 on the aerial photograph image 12, it can be seen that the brightness is reduced by 2 depending on the shooting environment of the aerial photograph image 12 and the setting of the camera.

Then, the image color information is corrected by adding the difference between the L value of the reference color information and the L value of the correction color information to the L value of the image color information acquired in the image color information acquisition step (S21). Obtain evaluation target color information. Therefore, the evaluation target color information is a value obtained by correcting the brightness value of the color information changed by the shooting environment at the time of shooting the aerial photograph image 12 and the camera setting from the image color information. By extracting and correcting only the L value, which is the information of the brightness, the correction can be performed more easily.

After executing the correction step, the evaluation step (S25) is performed next. In the evaluation step, the deterioration state of the waterproof sheet 13 is evaluated based on the difference between the product color information of the target building 1 stored in the database 3 and the evaluation target color information. Specifically, the building list information 7 of the database 3 is accessed to obtain the information of the product name of the waterproof sheet 13 of the target building 1, and the product color information 8 for each sheet is accessed to obtain the information of the product color information 8 of the waterproof sheet 13. Get product color information. The product color information is the original color information of the product of the waterproof sheet 13, and is the color information of the initial waterproof sheet 13 in which the roof portion 11 of the building is waterproofed. The product color information is represented by the coordinates of the Lab color system.

When the product color information of the waterproof sheet 13 is acquired, the difference between the product color information of the target building 1 and the evaluation target color information is obtained. Specifically, the difference between the L value of the product color information and the L value of the evaluation target color information is obtained. The product color information is the color information of the waterproof sheet 13 at the time when the waterproof treatment of the roof portion 11 is applied, and the evaluation target color information is the color information of the waterproof sheet 13 at the time when the aerial photograph image 12 is taken. The amount of color change from the beginning can be obtained. Therefore, when the difference between the L value of the product color information and the L value of the evaluation target color information is large, it is found that the amount of change in the color of the waterproof sheet 13 is large, and the waterproof sheet 13 may be deteriorated. Is presumed to be high. If a threshold value for which a problem is suspected in waterproof performance is set in advance, it is possible to evaluate whether or not there is a problem in the waterproof performance of the waterproof sheet by obtaining the difference between the product color information and the L value of the evaluation target color information. can.

As described above, the evaluation process is not limited to evaluating the deterioration status of the waterproof sheet 13 based on the difference between the product color information and the evaluation target color information. For example, the evaluation step (S25) evaluates the deterioration status of the waterproof sheet 13 by using the color performance-related data 9 showing the correlation between the color change of the waterproof sheet 13 for each product and the performance deterioration. May be good. As shown in FIG. 7, the color performance-related data 9 schematically shows the L value of the Lab color system of the waterproof sheet 13 on the vertical axis and the elongation rate at break of the waterproof sheet 13 as a line graph shown on the horizontal axis. be able to. The color performance-related data 9 shows the correlation between the color change and the performance deterioration for each of the products "XX sheet", "YY sheet", and "ZZ sheet" of the waterproof sheet 13. The color performance-related data 9 is obtained by actually performing a tensile test on the waterproof sheet 13 and accumulating data on the elongation at break for each color information of the waterproof sheet 13 to obtain correlation data. In the present embodiment, the product's original elongation at break of the waterproof sheet 13 is 350%. For example, when the elongation at break is less than 150%, the deterioration of the waterproof sheet 13 progresses and the waterproof performance is improved. There is a risk of problems.

In the present embodiment, the color performance-related data 9 shows the correlation between the change in the L value of the Lab color system of the waterproof sheet 13 and the elongation rate at break of the waterproof sheet 13, but the waterproof sheet For example, instead of the elongation rate at break of 13, the residual ratio of the plastic agent of the waterproof sheet 13 may be used as an index showing the performance deterioration of the waterproof sheet 13.

For example, when the L value of the evaluation target color information of the waterproof sheet 13 of the product name “XX sheet” is “70”, the elongation rate at break is 150% with reference to the color performance-related data 9. Therefore, it can be evaluated that the waterproof sheet 13 which is the target of the table has a problem in waterproof performance. On the other hand, for example, when the L value of the evaluation target color information of the waterproof sheet 13 of the product name "XX sheet" is "63", the elongation rate at break is 200% with reference to the color performance-related data 9. Therefore, the waterproof sheet 13 that can be represented can be evaluated without any problem in waterproof performance.

As described above, the method for diagnosing the waterproof sheet of the present embodiment is a diagnostic method that can evaluate the deterioration status of the waterproof sheet 13 extremely simply, and goes to the site to perform a full-scale diagnosis of the waterproof sheet 13. It can be used for previous screening. Moreover, since the diagnosis is made based on the quantified color information without relying on visual inspection, it is objective and does not require skill in the diagnosis work.

In particular, the method for diagnosing the waterproof sheet of the present embodiment can be diagnosed using the aerial photograph image 12 provided on the Internet 5, etc., so that the shooting cost can be saved as compared with the case of taking a picture by oneself, and moreover, it is possible to save the shooting cost. Since the influence of the shooting environment and the setting of the camera can be eliminated by correcting by using the white road sign 10, it is possible to perform highly accurate diagnosis while using the generally provided aerial photograph image 12.

In the present embodiment, the "difference between the reference color information and the correction color information" and the "difference between the product color information and the evaluation target color information" are the differences in the L values of the Lab color system, respectively. Further, the value of the color change in the "color performance-related data" shows the value of the change of only the L value, but the color difference in consideration of the a value and the b value in addition to the L value of the Lab color system, respectively. You may judge the deterioration state of the waterproof sheet 13 based on this.

It goes without saying that the embodiment of the present invention is not limited to the above-described embodiment and can be appropriately changed without departing from the scope of the idea of the present invention.

The method for diagnosing a waterproof sheet according to the present invention can be suitably used, for example, as a method for diagnosing a waterproof sheet 13 for a roof portion 2 of a flat roof house.

1 Target building 9 Color performance related data 10 White road sign 11 Hinata area 12 Aerial photograph image 13 Tarpaulin

Claims (5)

It is a diagnostic method for the tarpaulin laid in the building.
An image acquisition process for acquiring aerial photograph images including the target building and white road markings based on the location information of the target building, and
An image color information acquisition process for acquiring image color information which is color information of the tarpaulin of the target building from the aerial photograph image, and
A correction color information acquisition process for acquiring correction color information which is color information of the white road marking from the aerial photograph image, and a correction color information acquisition step.
A correction step of correcting the image color information and acquiring evaluation target color information based on the difference between the reference color information which is the original color of the white road sign and the correction color information.
An evaluation process for evaluating the deterioration status of the waterproof sheet of the target building based on the information including the evaluation target color information, and an evaluation process.
Equipped with
The product color information, which is the original color information of the product of the waterproof sheet laid in the building, is stored in the database in advance for each building.
The evaluation step is a step of evaluating the deterioration state of the waterproof sheet of the target building based on the difference between the product color information of the waterproof sheet of the target building and the evaluation target color information stored in the database. A method of diagnosing a tarpaulin, which is characterized by that . It is a diagnostic method for the tarpaulin laid in the building.
An image acquisition process for acquiring aerial photograph images including the target building and white road markings based on the location information of the target building, and
An image color information acquisition process for acquiring image color information which is color information of the tarpaulin of the target building from the aerial photograph image, and
A correction color information acquisition process for acquiring correction color information which is color information of the white road marking from the aerial photograph image, and a correction color information acquisition step.
A correction step of correcting the image color information and acquiring evaluation target color information based on the difference between the reference color information which is the original color of the white road sign and the correction color information.
An evaluation process for evaluating the deterioration status of the waterproof sheet of the target building based on the information including the evaluation target color information, and an evaluation process.
Equipped with
Color performance-related data showing the correlation between color change and performance deterioration for each waterproof sheet product is stored in the database.
The evaluation step is a step of evaluating the deterioration state of the waterproof sheet of the target building based on the evaluation target color information and the color performance-related data . The method for diagnosing a waterproof sheet. It is a diagnostic method for the tarpaulin laid in the building.
An image acquisition process for acquiring aerial photograph images including the target building and white road markings based on the location information of the target building, and
An image color information acquisition process for acquiring image color information which is color information of the tarpaulin of the target building from the aerial photograph image, and
A correction color information acquisition process for acquiring correction color information which is color information of the white road marking from the aerial photograph image, and a correction color information acquisition step.
A correction step of correcting the image color information and acquiring evaluation target color information based on the difference between the reference color information which is the original color of the white road sign and the correction color information.
An evaluation process for evaluating the deterioration status of the waterproof sheet of the target building based on the information including the evaluation target color information, and an evaluation process.
Equipped with
The correction step corrects the image color information based on the difference in brightness between the reference color information and the correction color information, and acquires the evaluation target color information.
The evaluation step is a method for diagnosing a waterproof sheet, which evaluates a deterioration state of the waterproof sheet of the target building based on information indicating the brightness of the evaluation target color information . It is a diagnostic method for the tarpaulin laid in the building.
An image acquisition process for acquiring aerial photograph images including the target building and white road markings based on the location information of the target building, and
An image color information acquisition process for acquiring image color information which is color information of the tarpaulin of the target building from the aerial photograph image, and
A correction color information acquisition step for acquiring correction color information which is color information of the white road marking from the aerial photograph image, and a correction color information acquisition step.
A correction step of correcting the image color information and acquiring evaluation target color information based on the difference between the reference color information which is the original color of the white road sign and the correction color information.
An evaluation process for evaluating the deterioration status of the waterproof sheet of the target building based on the information including the evaluation target color information, and an evaluation process.
Equipped with
The image color information acquisition step is a method for diagnosing a waterproof sheet, which comprises acquiring color information of a light-colored portion of the waterproof sheet of the target building as image color information . Any one of claims 1 to 4, wherein the image color information acquisition step and the correction color information acquisition step acquire image color information and correction color information in a sunlit area directly exposed to sunlight, respectively. The method of diagnosing the waterproof sheet described in.

Images