Repair determination system, repair determination program, and method for repair determination for buildings such as high-rise office buildings and high-rise condominiums

Abstract

To provide a repair determination system capable of detecting damaged parts of a building while reducing cost.SOLUTION: A building repair determination system (100) has a server (200) having: a storage unit (220) for storing a three-dimensional model created by photogrammetry; and a damage detection unit (240) for detecting damaged portions of a building. The damage detection unit (240) compares a three-dimensional model of the building before damage, stored in the storage unit, with a three-dimensional model of the building at the time of inspection, and detects damaged parts of the building on the basis of differences between the two models.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a repair assessment system, a repair assessment program, and a repair assessment method for buildings such as high-rise buildings and high-rise apartment buildings. [Background technology]

[0002] Generally, when inspecting exterior walls and other exterior features of low- to mid-rise apartment buildings, it is possible to visually inspect them from the ground, but in the case of tower apartment buildings and high-rise buildings, scaffolding must be set up to inspect the condition of exterior walls that are too high to be seen with the naked eye.

[0003] In addition, when investigating deterioration of high-rise condominiums, it is necessary to use existing gondolas or to suspend the gondolas just for the purpose of the investigation.

[0004] Deterioration surveys can be carried out as partial surveys, but some administrative agencies require that regular building inspection reports be submitted for apartment buildings of a certain size or larger.

[0005] This requires that every three years investigations and reports be conducted on the proper setting of fire compartments, the maintenance of evacuation stairs and evacuation equipment, as well as the deterioration of the building's framework, external equipment, fences, etc.

[0006] In addition, exterior walls and other structures must undergo a "visual inspection and partial tapping survey" every three years.

[0007] Furthermore, if the exterior is finished with tiles (including those applied to PC / ALC panels or poured in at a factory), stonework (excluding those made using dry construction methods), or mortar lath (mortar coating, generally 20mm to 40mm thick), and it has been more than 10 years since the building was completed, and if no exterior wall renovation work has been carried out in more than 10 years, or if a full tapping survey of the exterior walls in areas that may pose a hazard to pedestrians etc. has not been carried out in more than 10 years, then a full tapping survey of the exterior walls must be carried out within three years.

[0008] In other words, for apartment buildings with tiled floors that are more than 10 years old, a full inspection must be carried out by the 13th year.

[0009] In this case, "assembly scaffolding," which is set up and assembled from the ground, can only be used up to a height of 45 meters; at heights higher than that, investigations cannot be carried out without the use of special scaffolding such as "gondola scaffolding" or "mobile elevating scaffolding."

[0010] However, there is a problem in that it is very expensive to erect scaffolding and suspend gondolas for deterioration diagnosis investigations. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Japanese Patent Application Publication No. 2018-010630 [Patent Document 2] Japanese Patent Publication No. 2022-155553 Summary of the Invention [Problem to be solved by the invention]

[0012] The invention of Patent Document 1 provides a technology that can clearly display changed parts from the perspective of a worker who investigates, inspects, checks the deterioration status, and repairs (maintenance) the changed parts of the subject, for example, from the perspective of the work position, diagnose the condition of the changed parts, and investigate whether there are any abnormalities in the subject.

[0013] The invention of Patent Document 2 includes an imaging means capable of acquiring a real image of a target area including a structure, a display means capable of displaying a real image; a storage means; and a support information generating means for acquiring three-dimensional shape information corresponding to a target area and generating virtual support information indicating that a virtual task has been performed over time with respect to the three-dimensional shape information, The real image and the virtual support information are synchronized in real time and can be displayed on the display means.

[0014] However, the inventions of Patent Documents 1 and 2 do not require time-consuming inspections, and therefore have the problem of not being able to investigate fine details.

[0015] A main object of the present invention is to provide a repair assessment system that can reduce costs and detect damaged portions of a building.

[0016] Another object of the present invention is to provide a repair assessment program that can reduce costs and detect damaged portions of a building.

[0017] Another object of the present invention is to provide a repair assessment method that can reduce costs and detect damaged portions of a building. [Means for solving the problem]

[0018] A building repair assessment system according to a first aspect of the present invention is a building repair assessment system including a server capable of communicating with a terminal for making a repair assessment of a building including a high-rise building and a high-rise apartment that are objects of a three-dimensional model, The server: a storage unit that stores the three-dimensional model created by photogrammetry; a damage detection unit that detects a damaged portion, The damage detection unit is a building repair assessment system that compares the three-dimensional model of the building before damage, which is stored in the memory unit, with the three-dimensional model of the building at the time of inspection, and detects damaged parts of the building based on the differences.

[0019] The three-dimensional model of the building before damage is preferably a three-dimensional model of the building when it was newly constructed or at approximately the same time as when it was newly constructed.

[0020] The building repair assessment system can be used for renovations as well as repairs.

[0021] The damage detection unit detects damaged areas in a three-dimensional model, allowing the user to check the damaged areas from any viewpoint.

[0022] Damaged areas can be identified using a three-dimensional model, eliminating the need for scaffolding or gondolas, reducing costs when investigating repairs or renovations.

[0023] Creating a three-dimensional model has the advantage that damaged areas can be checked over time rather than on-site using a drone, reducing the chance of overlooking damaged areas.

[0024] In addition, apartment building residents and management associations can easily check damaged areas of the building using the three-dimensional model.

[0025] A building repair assessment system according to a second aspect of the present invention is the building repair assessment system according to the first aspect, a repair determination unit that determines whether the building needs repair based on the detection content of the damage detection unit; The repair assessment unit is a building repair assessment system that assesses whether or not to carry out repairs on the building based on the damaged parts of the building detected by the damage detection unit and predetermined repair standards.

[0026] The repair determination unit makes a determination based on predetermined repair criteria such as the size and width of the damaged portion.

[0027] Based on this, the user can determine whether or not repairs are necessary.

[0028] A building repair assessment system according to a third aspect of the present invention is the building repair assessment system according to the first aspect, a thermal image conversion unit that converts the three-dimensional model into a thermal image; The damage detection unit is a building repair assessment system that compares a thermal image of the three-dimensional model of the building before damage, which is stored in the memory unit, with a thermal image of the three-dimensional model of the building at the time of inspection, and detects damaged parts of the building based on the differences.

[0029] By converting the three-dimensional model into a thermal image, the damage detection unit can detect loose tiles on the building, etc.

[0030] A building repair program according to a fourth aspect of the present invention is a building repair assessment program including a server capable of communicating with a terminal, for making a repair assessment for a building including a high-rise building and a high-rise apartment that are objects of a three-dimensional model, a storage process for storing the three-dimensional model created by photogrammetry; A damage detection process is performed to detect a damaged portion. The damage detection process is a building repair assessment program that compares the three-dimensional model of the building before damage, which is stored by the memory process, with the three-dimensional model of the building at the time of inspection, and detects damaged parts of the building based on the differences.

[0031] This provides the same effects as the building repair system according to the first aspect.

[0032] A building repair method according to a fifth aspect of the present invention is a building repair assessment method including a server capable of communicating with a terminal, for making a repair assessment of a building including a high-rise building and a high-rise apartment that are objects of a three-dimensional model, the method comprising: a storage step in which the server stores the three-dimensional model created by photogrammetry; a damage detection step in which the server detects a damaged portion; The damage detection process is a building repair assessment method in which the three-dimensional model of the building before damage, which is stored in the storage process, is compared with the three-dimensional model of the building at the time of inspection, and damaged parts are detected based on the differences.

[0033] This provides the same effects as the building repair system according to the first aspect and the building repair program according to the fourth aspect. [Brief explanation of the drawings]

[0034] [Figure 1] FIG. 1 is a conceptual diagram illustrating the creation of a 3D model of a building S using photogrammetry in one embodiment of the present invention. [Figure 2] FIG. 10 is a conceptual diagram showing the creation of a 3D model of a building S using photogrammetry in the embodiment. [Figure 3] 1 is a conceptual diagram of a building repair determination system according to an embodiment of the present invention. [Figure 4] FIG. 2 is a conceptual diagram of the building repair determination system according to the embodiment. [Figure 5] FIG. 2 is a conceptual diagram of the building repair determination system according to the embodiment. [Figure 6] FIG. 2 is a conceptual diagram of the building repair determination system according to the embodiment. [Figure 7] 1 is a flowchart of a building repair assessment system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0035] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0036] (Photogrammetry) In this embodiment, photogrammetry is used to create the 3DCG.

[0037] "Photogrammetry" is a technology that generates realistic 3DCG from photographs.

[0038] Specifically, photogrammetry is a technique for synthesizing multiple photographs of an object (in this embodiment, a building) taken from various angles.

[0039] The number of photos required varies depending on how realistic and detailed you want the 3DCG model to be, ranging from dozens to hundreds.

[0040] The photogrammetry production process consists of the following steps: 1. photography, 2. alignment, 3. mesh generation (creation of point cloud data), 4. simplification, 5. unwrap, and 6. texture generation.

[0041] When taking photographs, since it is not possible to recreate areas that have not been photographed, the subject, the building, is photographed from various angles.

[0042] Care must be taken when taking photographs, as missing any photographs can lead to alignment failures and mesh generation failures.

[0043] 1 and 2 are examples showing locations photographed by the photographing device P. As can be seen from FIGS. 1 and 2, photographs are taken, in principle, with horizontal and vertical movement.

[0044] In this embodiment, a drone is used as the photographing device P, but a 3D laser scanner, a handheld scanner, etc. may also be used.

[0045] In this embodiment, the photographing device P is equipped with a normal camera and an infrared camera.

[0046] A more accurate mesh can be obtained using laser scanning.

[0047] By using a drone, it is possible to take pictures from high positions of buildings such as skyscrapers and high-rise apartment buildings. It is also possible to take pictures from high positions using a long pole.

[0048] "Alignment" means arranging elements based on each point of the object (element).

[0049] In this embodiment, alignment means placing the building S based on each point of the building S.

[0050] To ensure successful alignment, it is necessary to ensure that no images are missed when photographed by the photographing device P.

[0051] "Mesh generation" creates a mesh at normal resolution. By reducing the image size, processing time can be reduced without affecting quality.

[0052] Simplification involves adjusting the number of polygons depending on the object. A "polygon" is a polygonal shape (flat surface) used in 3D graphics to represent the curved surfaces of a three-dimensional object.

[0053] Set the texture resolution, number of images, etc. in the settings, then select Unwrap.

[0054] "Texture" originally refers to the texture and feel of an object's surface. In 3D computer graphics (CG), a "texture" is a pattern or image that is pasted onto the surface of a 3D object to express the surface texture of the object, and the technique of pasting textures in this way is called "texture mapping."

[0055] Texture mapping makes the texture of 3D objects more realistic. For example, the same object will look like a piece of metal if you apply a metal texture, or like a piece of wood if you apply a wood grain texture. Texture mapping can also be used to create a shiny table or reflections on glass.

[0056] Mesh data consists of polygons and textures.

[0057] 3DCG (3D models, three-dimensional models) created using this photogrammetry can also be used in the Metaverse, etc.

[0058] In addition, the 3D model of building S, etc. created using this photogrammetry has spatial coordinates (X, Y, Z), and the actual distance can be determined based on the coordinate position.

[0059] Photogrammetry can be constructed using point cloud data. Point cloud data is composed of only information on independent points, which is closer to the raw data obtained from a sensor than mesh data, and is therefore characterized by superior accuracy in many cases.

[0060] As shown in FIGS. 4 and 5, in this embodiment, photogrammetry is created using point cloud data.

[0061] The data format of point cloud data consists of six basic components: spatial coordinates (X, Y, Z) for each vertex and color (R (red), G (green), B (blue)).In addition, it may contain information such as reflectance and normal vectors, known as scalar information.

[0062] As shown in Figure 6, by overlaying thermal images taken by an infrared camera on a 3D model created from point cloud data, it is easy to understand loose or damaged tiles installed in building S.

[0063] As shown in FIG. 3, the repair determination system 100 according to this embodiment includes a cloud server 200, and a first terminal 300 that is a terminal that can access the cloud server 200.

[0064] The cloud server 200 is a server built on a cloud, and its server functions can be used via the Internet. In this embodiment, the cloud server 200 is used as the server, but a normal server may also be used.

[0065] As shown in FIG. 3, the cloud server 200 includes a communication unit 210 that can communicate with the first terminal 300, A storage unit 220 that stores a 3D model (three-dimensional model) of a building S, such as a high-rise building or a high-rise apartment building, which is an object created by photogrammetry; a thermal image conversion unit 230 that converts the 3D model of the building S into a thermal image; a damage detection unit 240 for detecting damaged portions of the building S by comparing a 3D model of the building S before damage stored in the memory unit 220 with a 3D model of the building S at the time of inspection; It also includes a repair determination unit 250 that determines whether repair or renovation is necessary from a 3D model of the building S before and after damage based on the detection by the damage detection unit 240.

[0066] The communication unit 210 communicates with the first terminal 300. The communication method may be either wired or wireless. There may be multiple first terminals 300.

[0067] The storage unit 220 stores a 3D model of the building S etc. before damage, created by photogrammetry.

[0068] The 3D model of the building S before damage is preferably a 3D model of the building S when it was newly constructed or approximately the same as when it was newly constructed.

[0069] The storage unit 220 also stores 3D models of buildings S and the like at the time of survey that have been newly photographed and created using a drone or the like.

[0070] 3D models created using photogrammetry have spatial coordinates, and the distance in the spatial coordinates corresponds to the actual distance.

[0071] The actual distance is then calculated from the distance of the spatial coordinates of the 3D model. The calculated distance may be corrected during calculation.

[0072] Furthermore, if distortion occurs in the lens of the photographing device P, it may be corrected.

[0073] The thermal image conversion unit 230 uses an image of the building S captured by an infrared camera to convert the building S into a 3D model represented by a thermal image.

[0074] The thermal image conversion unit 230 may be configured to convert a part of the 3D model of the building S into a thermal image.

[0075] By comparing the thermal image of the 3D model of building S before damage with the thermal image of the 3D model of building S at the time of the investigation, the difference in temperature changes can be seen.

[0076] The loosening of tiles on building S can be easily detected by changes in the thermal image.

[0077] The damage detection unit 240 detects damaged portions of the building S by comparing a 3D model of the building S before damage with a 3D model of the building S at the time of inspection.

[0078] The user of the first terminal 300 can easily check the detected damaged parts of the building S from any viewpoint using the 3D model. In addition, as shown in Figures 4 to 6, the 3D model of the building S can be partially enlarged, making it easy to check the damaged parts.

[0079] In addition, the damage detection unit 240 detects damaged portions of the building S by comparing a thermal image of the 3D model of the building S before damage with a thermal image of the 3D model of the building S at the time of inspection.

[0080] This allows the damage detection unit 240 to detect loose tiles in the building S.

[0081] The repair determination unit 250 determines whether or not repair or renovation of the building S is necessary based on the damaged portion of the building S detected by the damage detection unit 240.

[0082] The repair determination unit 250 determines whether or not repair is necessary based on the damaged portion detected by the damage detection unit 240 and predetermined repair standards.

[0083] The repair assessment unit 250 may overlay the 3D model of the building S stored in the memory unit 220 with the 3D model of the building S after damage, and determine the percentage difference from the 3D model of the building S before damage.

[0084] That is, the repair assessment unit 250 calculates the degree of damage to the building S.

[0085] The predetermined repair standards are, for example, the width and size of cracks, or standards that are uniquely determined for the building S.

[0086] For example, if the width of a crack in building S is 0.5 mm or more, this becomes a factor in determining whether insurance coverage is applicable, so the repair determination unit 250 determines that repair or renovation is necessary if the width of the crack detected by the damage detection unit 240 is 0.5 mm or more.

[0087] Based on the determination by the repair determination unit 250, the user of the first terminal 300 can determine whether or not the building S needs repair.

[0088] (First terminal 300) The first terminal 300 is a terminal that includes a first communication unit 310, which is a communication function for accessing the Internet in order to access the cloud server 200; a first storage unit 320 capable of storing data stored in the storage unit 220 of the cloud server 200; and a first display unit 330 that accesses the cloud server 200 and displays the work content or stored data.

[0089] Examples of the first terminal 300 include a personal computer and a tablet.

[0090] The first communication unit 310 is a unit for performing communication for connecting to the Internet. The first communication unit 310 enables the first terminal 300 to access the cloud server 200.

[0091] Note that the first communication unit 310 also includes accessing the Internet via Wi-Fi (wireless LAN) or wired LAN.

[0092] (Flowchart for assessing building repairs) FIG. 7 shows a flowchart for determining whether a building S needs repair or renovation in this embodiment. First, a 3D model (three-dimensional model) of a building S such as a high-rise building or a high-rise apartment building before damage is created by photogrammetry (step S11, three-dimensional model creation process).

[0093] The 3D model of the building S before damage is preferably a 3D model of the building S at the time of new construction or at the same time.

[0094] Next, a 3D model (three-dimensional model) of the building S at the time of investigation is created by photogrammetry (step S12, three-dimensional model creation process).

[0095] The damage detection unit 240 compares the three-dimensional model of the building S before damage with the three-dimensional model of the building S at the time of inspection, and detects damaged portions (step S13, damage detection process).

[0096] In addition, the thermal image conversion unit 230 may convert the 3D model of the building S into a thermal image (thermal image conversion process), and the damage detection unit 240 may compare the thermal image of the three-dimensional model of the building S before damage with the thermal image of the three-dimensional model of the building S at the time of inspection to detect damaged areas (step S14, damage detection process).

[0097] Next, the repair determination unit 250 determines whether or not repair of the building S is necessary based on the damaged portion detected by the damage detection unit 240 and predetermined repair standards (step S15, repair determination step).

[0098] The user of the first terminal 300 determines whether or not repair or renovation of the building S is necessary based on the determination by the repair determination unit 250 (step S16).

[0099] The present invention can be implemented in various forms with various improvements, modifications, or variations added thereto without departing from the spirit of the invention. [Explanation of symbols]

[0100] 100...Building Deterioration Survey System 200...Cloud server (server) 210…Communications Department 220...Storage section 230...Thermal image conversion unit 240...Damage detection unit 250…Repair Judgment Department 300... Terminal 1 (terminal) 310…1st Communications Department 320...1st memory section 330...First display section (display section)

Claims

1. A building repair assessment system including a server capable of communicating with a terminal for making a repair assessment of a building, including a high-rise building and a high-rise apartment building, which are objects of a three-dimensional model, The server: a storage unit that stores the three-dimensional model created by photogrammetry; a damage detection unit that detects a damaged portion, The damage detection unit is a building repair assessment system that compares the three-dimensional model of the building before damage, which is stored in the memory unit, with the three-dimensional model of the building at the time of inspection, and detects damaged parts of the building based on the differences.

2. a repair determination unit that determines whether the building needs repair based on the detection content of the damage detection unit; The building repair assessment system of claim 1, wherein the repair assessment unit determines whether or not to carry out repairs on the building based on the damaged parts of the building detected by the damage detection unit and predetermined repair standards.

3. a thermal image conversion unit that converts the three-dimensional model into a thermal image; The building repair assessment system of claim 1, wherein the damage detection unit compares a thermal image of the three-dimensional model of the building before damage stored in the memory unit with a thermal image of the three-dimensional model of the building at the time of inspection, and detects damaged portions of the building based on the differences.

4. A building repair assessment program including a server capable of communicating with a terminal for making a repair assessment of a building, including a high-rise building and a high-rise apartment building, which is an object of a three-dimensional model, a storage process for storing the three-dimensional model created by photogrammetry; A damage detection process is performed to detect a damaged portion. The damage detection process is a building repair assessment program that compares the three-dimensional model of the building before damage, which is stored by the memory process, with the three-dimensional model of the building at the time of inspection, and detects damaged parts of the building based on the differences.

5. A building repair assessment method for making a repair assessment for a building, including a high-rise building and a high-rise apartment building, which is an object of a three-dimensional model, including a server capable of communicating with a terminal, a storage step in which the server stores the three-dimensional model created by photogrammetry; a damage detection step in which the server detects a damaged portion; In the damage detection process, the three-dimensional model of the building before damage, which is stored in the storage process, is compared with the three-dimensional model of the building at the time of inspection, and damaged parts are detected based on the differences.

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