KR20170067023A - Apparatus and method for inspecting drawing - Google Patents

Apparatus and method for inspecting drawing Download PDF

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KR20170067023A
KR20170067023A KR1020150173382A KR20150173382A KR20170067023A KR 20170067023 A KR20170067023 A KR 20170067023A KR 1020150173382 A KR1020150173382 A KR 1020150173382A KR 20150173382 A KR20150173382 A KR 20150173382A KR 20170067023 A KR20170067023 A KR 20170067023A
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image
dimensional model
photographing
present
processing unit
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KR1020150173382A
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KR101792701B1 (en
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박정서
박인하
황인혁
강태선
김호구
홍지수
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삼성중공업 주식회사
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    • B63B9/001—
    • G06F17/5095—
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects

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Abstract

The present invention relates to a drawing inspection apparatus and method. An apparatus for inspecting a drawing according to an embodiment of the present invention includes an image processing unit for synthesizing a three-dimensional model of the structure and drawings of the structure on a structure image obtained by photographing the structure to generate a composite image; And an output unit outputting the synthesized image.

Figure P1020150173382

Description

[0001] APPARATUS AND METHOD FOR INSPECTING DRAWING [0002]

The present invention relates to a drawing inspection apparatus and method.

Before a ship or an offshore plant is manufactured, a three-dimensional model is created by three-dimensional modeling of a structure such as a block or a module, and various drawings for each part of the structure, such as a front view, a flat view, and a perspective view, . Unlike the 3D model, which contains information on all types of works for the structure, the 2D drawings only contain information for a single process, so that the drawings have a limit to provide information limited to the worker as compared with the 3D model.

Therefore, when the work is carried out only by the drawing information at the time of performing the process on the structure, it often happens that there is an inefficient situation in which the equipment or the other parts of the structure installed in the structure are interfered with and rework. In addition, since inspection is performed on the basis of the drawings of the structure at the time of inspection of the work to judge the omission or erroneousness after the completion of the construction of the structure, when the work is carried out through the design change in the structure production process, It is necessary to prepare for future work inspection.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a drawing inspection apparatus and method for providing a user with various information on a structure to enable a process to be performed more efficiently.

It is an object of the present invention to provide a drawing inspection apparatus and method capable of easily modifying a drawing when a structure design is changed, and obtaining a corrected drawing with an actual shape of the structure and a small error.

An apparatus for inspecting a drawing according to an embodiment of the present invention includes an image processing unit for synthesizing a three-dimensional model of the structure and drawings of the structure on a structure image obtained by photographing the structure to generate a composite image; And an output unit outputting the synthesized image.

The drawing inspection apparatus includes: an image input unit receiving an image of the structure from a user; And a camera unit for photographing the structure to generate the structure image.

Wherein the image processing unit is configured to: match the three-dimensional model to the structure image so that at least one reference point extracted from the structure image matches the corresponding point of the three-dimensional model corresponding to the reference point, Acquiring a position and a photographing direction of the camera that photographed the viewpoint and the view direction, and converting the viewpoint and sight direction of the viewpoint corresponding to the position and the photographing direction of the camera, can do.

Wherein the output unit displays a three-dimensional model of the structure, and the image processing unit receives structure photographing data related to a position at which the structure is photographed based on the displayed three-dimensional model, The direction of the eye of the 3D model can be detected.

Wherein the drawing inspection apparatus includes: a non-corresponding detector that detects a portion of the composite image in which the structure image and the three-dimensional model do not correspond to each other; And a drawing modifying unit for deleting the matched portion from the non-corresponding portion of the three-dimensional model from the drawing and adding an edge of the non-corresponding portion of the structure image to the drawing.

According to another aspect of the present invention, there is provided a method of inspecting a drawing, comprising: obtaining a structure image obtained by photographing a structure; Synthesizing a three-dimensional model of the structure and a drawing of the structure on the structure image to generate a composite image; And outputting the composite image.

According to the embodiment of the present invention, the user can perform the process more efficiently by providing various information regarding the structure.

According to the embodiment of the present invention, the user can easily modify the drawings when changing the structure design, and obtain the corrected drawings with the actual shape of the structure and with a small error.

1 is an exemplary block diagram of a drawing inspection apparatus according to an embodiment of the present invention.
2 is an exemplary view showing a structure image taken by photographing a structure according to an embodiment of the present invention.
FIG. 3 exemplarily shows a three-dimensional model of the structure shown in FIG.
4 exemplarily shows a view of the structure shown in Fig.
5 is an exemplary diagram for explaining a process of synthesizing a three-dimensional model and a structure image according to an embodiment of the present invention.
6 is a view for explaining a user input process for determining a viewing direction of a three-dimensional model corresponding to a photographing direction of a structure according to an embodiment of the present invention.
7 is an exemplary diagram for explaining a process of composing a structure image and a drawing according to an embodiment of the present invention.
8 is an exemplary diagram for explaining a process of converting a drawing corresponding to a structure photographing position and direction according to an embodiment of the present invention.
9 is an exemplary diagram for explaining a process of detecting a portion where a structure image and a three-dimensional model do not correspond to each other in a composite image according to an embodiment of the present invention.
10 is an exemplary diagram illustrating a process of modifying a drawing according to an embodiment of the present invention.
11 is an exemplary flow diagram of a method of inspecting a drawing according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings attached hereto.

1 is an exemplary block diagram of a drawing inspection apparatus 100 according to an embodiment of the present invention.

1, the drawing inspection apparatus 100 may include an input unit 110, an image processing unit 120, and an output unit 130. As shown in FIG.

The input unit 110 may be an input device such as a keyboard, a mouse, a touch pad, a touch screen, or the like when receiving data from a user.

The image processing unit 120 is an apparatus for processing images, and may include a processor such as a GPU. According to an embodiment of the present invention, the image processing unit 120 may generate a composite image by synthesizing a three-dimensional model of the structure and drawings of the structure on a structure image obtained by photographing the structure.

The output unit 130 is an apparatus for outputting data, and may include a display device for outputting an image to a screen. According to an embodiment of the present invention, the output unit 130 may output the composite image generated by the image processing unit 120.

According to an embodiment of the present invention, the drawing inspecting apparatus 100 may be implemented as a terminal device that can be carried by a user such as a smart device, a tablet PC, and the like. In this case, the user can check the information on the structure through the drawing inspection apparatus 100 when performing the work on the structure while carrying the drawing inspection apparatus 100.

However, the drawing inspection apparatus 100 is not limited to the terminal apparatus. According to an embodiment, the drawing inspection apparatus 100 may be implemented as an apparatus that is fixedly disposed at one point, such as a kiosk, and provides structure information to a user.

When the drawing inspection apparatus 100 is implemented in the form of a kiosk, the output unit 130 may include not only a display apparatus but also a printing apparatus capable of printing a composite image of a structure on a printing medium such as paper .

The drawing inspection apparatus 100 may further include a control unit 140. The controller 140 is a controller for controlling the operation of the drawing inspecting apparatus 100. The controller 140 may execute a program or software for driving the apparatus and may generate commands and control signals according to the programs and software.

According to an embodiment of the present invention, the drawing inspection apparatus 100 may further include an image input unit 150 to receive a structure image.

The image input unit 150 is an interface device that receives a structure image obtained by photographing a structure. For example, the image input unit 150 may include a data port (e.g., a USB port) that is connected to a camera of a user and receives image data through a wired connection, but the present invention is not limited thereto.

The method by which the image input unit 150 receives image data is not limited to wired communication, and may receive data through wireless communication, for example, near-field wireless communication. In this case, the user can transmit the image from the device storing the structure image to the drawing inspection apparatus 100 using Bluetooth or the like.

Alternatively, according to another embodiment of the present invention, the drawing inspection apparatus 100 may further include a camera unit 160.

The camera unit 160 may photograph a structure to generate a structure image. That is, in this embodiment, the structure image is acquired directly by the drawing inspection apparatus 100 instead of receiving input from another apparatus.

2 is an exemplary view showing a state in which a structure image 10 is obtained by imaging a structure 10 according to an embodiment of the present invention.

2, a structure such as a pipe is installed on a structure 10 such as a block, and a user views the structure image 10 by photographing the structure 10 with a camera mounted on the drawing inspection apparatus 100, . The structure image 11 may be displayed on the output unit 130 corresponding to the display device and provided to the user.

According to an embodiment of the present invention, the image processing unit 120 may synthesize a three-dimensional model of the structure in the structure image 11 to obtain a composite image.

Figure 3 illustrates, by way of example, a three-dimensional model 12 of the structure 10 shown in Figure 2.

In accordance with an embodiment of the present invention, the drawing inspection apparatus 100 may invoke a three-dimensional model 12 associated with the structure 10. The three-dimensional model 12 may be modeling data modeling the shape of the structure 10 itself, modeling data installed in the structure 10, or modeling data of various articles (e.g., equipment). The three-dimensional model 12 shown in FIG. 3 is a shape model modeled up to a pipe installed in the outer plate of the structure 10 together with the outer plate.

In addition, the image processing unit 120 may generate a composite image by synthesizing two-dimensional drawings in addition to the three-dimensional model 12 on the structure image 11.

Figure 4 illustrates, by way of example, a drawing 13 of the structure 10 shown in Figure 2.

Similar to the three-dimensional model 12 described above, the drawing inspection apparatus 100 can recall the drawing 13 associated with the structure 10. The figure (13) is a two-dimensional image providing geometric information of a structure or an article to be installed thereon, and the appearance of the structure 10 in one direction is displayed using various lines, symbols, and the like. 4 is a front view of the piping installed in the structure 10 as viewed from the front.

According to one embodiment, at least one of the three-dimensional model 12 and the drawing 13 may be stored in the server 200 connected to the drawing inspection apparatus 100 via a network, Dimensional model 12 or drawing 13 relating to the structure 10 by connecting to the server 200 through the communication unit 190. The three-

According to another embodiment, at least one of the three-dimensional model 12 and the drawing 13 may be stored in the storage unit 195 included in the drawing inspection apparatus 100. In this case, the drawing inspection apparatus 100 may invoke the three-dimensional model 12 or the drawing 13 from the storage unit 195 and synthesize the three-dimensional model 12 or the drawing 13 with the structure image 11 to generate a composite image.

According to an embodiment of the present invention, in order to invoke at least one of the three-dimensional model 12 and the drawing 13 of the structure 10, the input unit 110 may include a structure identification Data can be input.

For example, the user may input an ID or a serial number for identifying the structure 10 through the input unit 110. Then, the drawing inspection apparatus 100 retrieves the three-dimensional model 12 or the drawing 13 matched with the structure identification data from the server 200 or the storage unit 195 and combines the three-dimensional model 12 or the drawing 13 with the structure image 11 .

According to another embodiment of the present invention, in order to recall at least one of the three-dimensional model 12 and the figure 13 of the structure 10, the camera unit 160 includes a structure for identifying the structure 10 Identifiers can be photographed.

For example, the user can take a barcode or a QR code displayed on the structure 10 or around the camera 10 with the camera unit 160. The drawing inspection apparatus 100 then calls the three-dimensional model 12 or the drawing 13 matched with the photographed structure identification symbol from the server 200 or the storage unit 195 to display the structure image 11 Can be synthesized.

The image processing unit 120 may generate a composite image by synthesizing the three-dimensional model 12 of the structure and the drawing 13 of the structure on the structure image 11.

5 is an exemplary diagram for explaining a process of synthesizing the structure image 11 and the three-dimensional model 12 according to an embodiment of the present invention.

According to an embodiment of the present invention, the image processing unit 120 may be configured such that at least one reference point (?) Extracted from the structure image 11 matches the corresponding point (x) of the three- So that the three-dimensional model 12 can be matched to the structure image 11.

For example, referring to FIG. 5, the image processing unit 120 may extract a reference point (?) From the structure image 11. Then, the image processing unit 120 can extract the corresponding point (x) from the three-dimensional model 12 of the structure. Then, the image processing unit 120 aligns the structure image 11 and the three-dimensional model 12 so that the reference point () of the structure image 11 and the corresponding points of the three-dimensional model 12 coincide with each other, A composite image 21 can be generated.

In order to match the three-dimensional model 12 to the two-dimensional structure image 11, the viewing direction of the three-dimensional model 12 corresponding to the photographing direction of the structure image 11 may be required. Although the structure image 11 and the three-dimensional model 12 include shape data for the same structure 10, unlike the structure image 11 including only two-dimensional plane data, the three- Dimensional model 12 viewed in the same direction as the photographing direction of the structure image 11 is matched with the structure image 11 in order to generate the first composite image 21 because the three- .

According to an embodiment of the present invention, in order to determine the viewing direction of the three-dimensional model 12, the output unit 130 displays the three-dimensional model 12, The user can receive data regarding the position where the structure 10 is photographed based on the 3D model 12. Then, the image processing unit 120 can detect the viewing direction of the three-dimensional model 12 corresponding to the photographing direction of the structure 10 based on the received photographing position.

FIG. 6 is an exemplary view for explaining a user input process for determining a viewing direction of the three-dimensional model 12 corresponding to a structure photographing direction according to an embodiment of the present invention.

According to this embodiment, the user inputs data regarding the photographing point of the structure 10 to the drawing inspecting apparatus 100, and instructs the drawing inspecting apparatus 100 to change the viewing direction of the three- It is possible to quickly detect the amount of computation less.

For example, referring to FIG. 6, the output unit 130 of the drawing inspection apparatus 100 may display a three-dimensional model 12 of the structure 10 on a screen. The user can input data regarding the structure photographing position based on the displayed three-dimensional model 12 through the input unit 110 such as a touch screen.

6, the drawing inspection apparatus 100 provides touch buttons 111, 112, and 113 for rotating the displayed three-dimensional model 12 in a three-dimensional coordinate space to a touch screen can do.

6, the touch button 111 relating to the x-axis is a button for rotating the three-dimensional model 12 around the x-axis, and the touch button 112 relating to the y- Axis, and the touch button 113 related to the z-axis is a button for rotating the three-dimensional model 12 about the z-axis. The user rotates the three-dimensional model 12 displayed on the output unit 130 in the three-dimensional coordinate space by touching the touch buttons 111, 112 and 113 to correspond to the direction in which the user took the structure 10 The three-dimensional model 12 can be operated.

The touch buttons 111, 112 and 113 for rotating the three-dimensional model 12 in the three-dimensional coordinate space and the touch buttons 114 and 115 for enlarging and reducing the three- ). ≪ / RTI >

Then, when the user touches the confirmation button 116, the image processing unit 130 searches the three-dimensional model 12 based on the viewing direction of the three-dimensional model 12 displayed on the output unit 130 by the user's operation, The viewing direction of the corresponding three-dimensional model 12 can be detected.

According to this embodiment, the image processing unit 120 can search the three-dimensional model 12 without having to search the view direction of the three-dimensional model 12 corresponding to the photographing direction of the structure image 11 over the entire area of the three- Dimensional model 12 can be searched only for a certain region centered on the structure photographing position input by the user and the sight direction corresponding to the photographing direction of the real image 11 can be detected. As a result, the embodiment of the present invention can greatly reduce the data throughput of the three-dimensional model 12 required for image matching, thereby improving the processing speed and reducing the hardware resources used in the computation.

The embodiment shown in FIG. 6 receives the structure photographing position from the user through the touch button provided on the touch screen, but the method of receiving the photographing position is not limited to this and can be implemented by various user interfaces.

The image processing unit 120 may synthesize not only the three-dimensional model 12 but also the drawing 13 of the structure on the structure image 11.

7 is an exemplary diagram for explaining a process of synthesizing the structure image 11 and the drawing 13 according to an embodiment of the present invention.

According to an embodiment of the present invention, the image processing unit 120 may acquire the position and the photographing direction of the camera 10 that has taken the structure 10 based on the structure image 11, and may correspond to the position and the photographing direction of the camera The viewpoint and the viewing direction of the drawing 13 can be changed, and the view and the viewing direction can be matched to the structure image 11.

Similar to the three-dimensional model 12 requiring a view direction corresponding to the structure photographing direction at the time of registration, the two-dimensional view 13 also requires information on the structure photographing position and direction in order to match the structure image 11 . For example, when the structure image 11 is an image obtained by obliquely photographing the structure 10 obliquely as shown in FIG. 2 and FIG. 13 is a front view of the structure 10 viewed from the front as shown in FIG. 4, Although the image 11 and the drawing 13 are two-dimensional shape data representing the same structure 10, they are difficult to match with each other due to the different viewing directions of the structures.

Therefore, according to the embodiment of the present invention, the image processing unit 120 transforms the viewpoint and the sight direction of the figure 13 corresponding to the camera photographing position and direction according to the structure image 11, and performs a preprocessing for registration can do.

8 is an exemplary diagram for explaining a process of converting a drawing corresponding to a structure photographing position and direction according to an embodiment of the present invention.

8, the image processing unit 120 acquires the position and the photographing direction of the camera 10 that has taken the structure 10 based on the structure image 11, 13) and the viewing direction of the image.

In order to detect the position and the photographing direction of the camera on the basis of the structure image 11, the drawing inspection apparatus 100 provides basic structure information on the shape and size of the structure 10 in advance, ) ≪ / RTI >

Then, the image processing unit 120 can process the figure 13 so that the viewpoint and the sight direction of the figure 13 are converted in the detected camera position and photographing direction. Thereafter, the image processing unit 120 may generate the second composite image 22 by matching the view 13 'with the viewpoint and the viewing direction to the structure image 11.

Although the first and second composite images 21 and 22 are introduced in the specification to describe the process of matching the three-dimensional model 12 to the structure image 11 and the process of matching the figure 13, Dimensional model 12 and the figure 13 together in the structure image 11. The three-

As a result, the drawing inspection apparatus 100 can visually combine three different data representing the shape of the structure 10 and provide the combined data to the user. A user can view a drawing 13 containing information on the current process and a three-dimensional model 12 providing general information of the structure 10 to the actual image of the structure 10 to be operated, By confirming the synthesized image that is converted and synthesized, it is possible to work more efficiently by receiving various information about the structure during the process.

Referring again to FIG. 1, the drawing inspection apparatus 100 may further include a non-corresponding detection unit 170 and a drawing inspection unit 180.

The non-corresponding detector 170 can detect a part where the structure image 11 and the three-dimensional model 12 do not correspond to each other in the composite image. The figure modifying unit 180 deletes the matched portion from the non-corresponding portion of the three-dimensional model 12 from the drawing 13 and displays the non-corresponding portion of the structure image 11 in the drawing (13) You can add an edge.

According to this embodiment, the drawing inspection apparatus 100 can modify the drawing 13 so that the design shape conforms to the actual shape when the actual shape and the design shape of the structure 10 do not match.

9 is a diagram illustrating an example of a process of detecting the parts 231 and 232 of the composite image 23 and the three-dimensional model 12 that do not correspond to each other in the composite image 23 according to an embodiment of the present invention And Fig. 10 is an exemplary diagram for explaining the process of modifying the figure 13 according to an embodiment of the present invention.

Ideally, the actual shape of the structure 10 should match the design shape shown in the design information, since the structure 10 is manufactured according to previously provided design information. However, errors may arise in the dimensions of members used in the manufacture of the structure 10, or a difference may occur between the actual shape and the design shape of the structure 10 due to various parameters generated during the process.

The embodiment of the present invention can compare the structure image 11 and the three-dimensional model 12 to reflect the difference in the design information, and modify the drawing 13 based on the inconsistent portion.

9, the non-corresponding detection unit 170 detects the structure image 11 in the composite image 23 in which the structure image 11, the three-dimensional model 12, and the drawing 13 are matched. It is possible to detect the portions 231 and 232 where the three-dimensional models 12 do not correspond to each other. 9, the position of some pipes 231 provided in the structure 10 does not coincide with the position of the corresponding pipes 232 shown in the three-dimensional model 12.

The nonconformity detection unit 170 detects the portion of the composite image 23 that does not correspond to the structure image 11 representing the actual shape of the structure 10 and the three-dimensional model 12 that represents the design shape 231, 232 can be detected through image processing.

Referring now to FIG. 10, the figure modifier 180 obtains the detected non-corresponding portion 232 of the three-dimensional model 12 from the figure 13 'included in the composite image 23 It is possible to delete the portion 131 and add the edge 132 of the detected non-corresponding portion 231 of the structure image 11 to the figure 13 '.

The modified figure 13 'in which the non-corresponding parts 231 and 232 are thus modified is obtained by transforming the viewpoint and the sight line direction into the viewpoint and the sight line direction before the image synthesis, Front view) can be obtained.

According to the embodiment of the present invention described above, when the design change of the structure 10 is required during the process, the user can easily modify the drawing 13 based on the composite image 23, Since the actual shape of the structure 10 is reflected as it is, the user can easily obtain a corrected drawing with a small error.

Figure 11 is an exemplary flow diagram of a method 200 for inspecting drawings in accordance with one embodiment of the present invention.

The drawing inspection method 200 can be performed by the drawing inspection apparatus 100 according to the embodiment of the present invention described above.

Referring to FIG. 11, the drawing inspection method 200 includes a step S210 of obtaining a structure image 11 obtained by photographing the structure 10, a three-dimensional model 12 of the structure in the structure image 11, (S220) of synthesizing a drawing (13) of the structure to generate a composite image (23), and outputting a composite image (23) (S230).

The step S210 of obtaining the structure image 11 may include the step of receiving the structure image 11 from the user or the camera unit 160 provided in the drawing inspection apparatus 100 may receive the structure 10 And generating the structure image 11 by photographing.

According to an embodiment of the present invention, the step S220 of generating the composite image 23 includes at least one reference point (?) Extracted from the structure image 11 and a three-dimensional model 12 Dimensional model 12 to the structure image 11 so that the corresponding points (x) of the three-dimensional model 12 are matched with each other.

In this case, the step S220 of generating the composite image 23 in order to detect the viewing direction of the three-dimensional model 12 corresponding to the photographing direction of the structure image 11 may be performed in a three- The method includes displaying the model 12, receiving data from a user about a location where the structure 10 is photographed based on the displayed three-dimensional model 12, Dimensional model 12 corresponding to the photographing direction of the three-dimensional model 12, as shown in Fig.

According to an embodiment of the present invention, the step S220 of generating the composite image 23 may include acquiring the position and the photographing direction of the camera 10 photographing the structure 10 based on the structure image 11 (13) corresponding to the position and the photographing direction of the camera, and matching the viewpoint and the sight direction converted view (13 ') to the structure image (11) . ≪ / RTI >

The inspection method 200 for inspecting the drawings can be applied to a method of inspecting a drawing by using a combination of the three-dimensional model 12 of the structure and the drawing 13 of the structure in the structure image 11, Can be generated.

11, the drawing inspection method 200 includes the steps of detecting portions 231 and 232 of the composite image 23 where the structure image 11 and the three-dimensional model 12 do not correspond to each other S250) of removing the matched portion 131 from the non-corresponding portion 232 of the three-dimensional model 12 from the drawing 13 'and the structure image 11 in the drawing 13' (Step S260) of adding an edge 132 of the non-corresponding part 231 of the display device 100. [

The drawing inspection method 200 may be stored in a computer-readable recording medium that is manufactured as a program for execution on a computer. The computer-readable recording medium includes all kinds of storage devices in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like. The drawing inspection method 200 may also be embodied as a computer program stored on a medium for execution in association with the computer.

While the present invention has been described with reference to the exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Those skilled in the art will appreciate that various modifications may be made to the embodiments described above. The scope of the present invention is defined only by the interpretation of the appended claims.

10: Structure
11: Structure image
12: Three-dimensional model
13: Drawings
23: Composite image
100: drawing inspection device
110: input unit
120:
130:
140:
150: Image input unit
160:
170:
180:
190:
195:
200: Server

Claims (6)

An image processing unit for synthesizing a three-dimensional model of the structure and drawings of the structure on a structure image obtained by photographing the structure to generate a composite image; And
And an output unit for outputting the composite image. The method according to claim 1,
An image input unit for receiving the image of the structure from a user; And
A camera unit for photographing the structure to generate the structure image;
Further comprising: The method according to claim 1,
Wherein the image processing unit comprises:
Dimensional model to the structure image so that at least one reference point extracted from the structure image and a corresponding point of the three-dimensional model corresponding to the reference point coincide with each other,
Acquiring a position and a photographing direction of a camera that has photographed the structure on the basis of the structure image, converting a viewpoint and a viewpoint direction of the viewpoint corresponding to a position and a photographing direction of the camera, To match the structure image. The method of claim 3,
Wherein the output unit displays a three-dimensional model of the structure,
Wherein the image processing unit receives structure photographing data on a position where the structure is photographed based on the displayed three-dimensional model, and detects the sight direction of the three-dimensional model corresponding to the photographing direction of the structure. The method according to claim 1,
A non-corresponding detector that detects a portion of the composite image in which the structure image and the three-dimensional model do not correspond to each other; And
A figure modifying unit for deleting the matched part from the non-corresponding part of the three-dimensional model from the figure and adding an edge of the non-corresponding part of the structure image to the figure;
Further comprising: Acquiring a structure image obtained by photographing a structure;
Synthesizing a three-dimensional model of the structure and a drawing of the structure on the structure image to generate a composite image; And
And outputting the composite image.
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