TW202107415A - Installation art restoring method applied to traditional building in which the digital technology is used to restore the installation art - Google Patents

Abstract

The present invention relates to an installation art restoring method applied to a traditional building. The 3D laser scanning technology is first used to obtain the point cloud data of an installation art before restoration and the point cloud data of the building body after restoration. Thereafter, the point cloud data of the installation and the building body is performed with coordinate-based uniform calculation to establish a three-dimensional virtual model. Then, by using the point cloud coordinate spatial distribution and values provided by the three-dimensional virtual model, the angle and distance required for layout of the installation art can be calculated so that the installation art can be accurately laid down on the entity of the building body. Thus, it not only facilitates the subsequent repair by the craftsman, but also improves the possibility of the original image restoration, so as to effectively avoid the situation that the composition content before restoration is so much different from that after restoration due to the space illusion. In addition, at least one layout instrument placement coordinate is selected in the three-dimensional virtual model and at least one reference position coordinate is selected. The angle among the reference position, the layout instrument and the installation art is calculated and the distance between the layout instrument and the installation art is calculated to obtain the layout information by summarizing. After the three-dimensional virtual model is established, the standard error calculation is further carried out to improve the accuracy of the three-dimensional virtual model. When acquiring the point cloud data of the installation art, the two-dimensional image data, scene surrounding images, related documents and field interviews of the installation art are also collected to establish a verification data so that the accuracy of the three-dimensional virtual model can be verified and adjusted after the three-dimensional virtual model is established. The installation art is one of stucco mural, painting and sculpturing.

Description

Restoration method of installation art applied to traditional architecture

The present invention is related to a method of restoration of installation art applied to traditional buildings, in particular to a method of restoration of installation art using digital technology.

Generally, traditional Chinese buildings will be equipped with stucco murals, paintings or sculptures, which have great historical, educational and artistic value. However, due to the erosion of natural factors or the destruction of man-made factors, the installation art will inevitably be repaired. Fortunately, there are many scientific methods that can assist related repair work. For example, infrared can be used to detect the underlying condition of the painted without destroying the painted, or the fluorescent reaction of the painted with ultraviolet can be detected, or the X-ray spectrometer can be used to detect Analyze and detect the composition of pigments, etc.

Although the above-mentioned science and technology can help restore the original materials, color materials, painting procedures and painting techniques used in the installation art, the composition of the installation art still has to rely on the artisan to refer to the image data of the installation art. , And it is easy for the illusion of space to cause obvious differences in the composition content before and after the restoration. For example, on May 23, 2013, the Liberty Times reported that "The historical building "Dragon Phoenix Palace", which was restored in Kinmen last year, was discovered by believers. There are many mistakes and dozens of murals in the palace based on novels such as "The Romance of the Three Kingdoms" and "The Romance of the Gods". There are many errors in the pictures and texts." Although this case is the normal state of restoration of non-traditional buildings, it highlights How to ensure the integrity of the original data and the accuracy of the restoration technology is a very important issue during the restoration of related murals or paintings and other installation art.

The purpose of the present invention is to provide an installation art restoration method applied to traditional architecture, which can accurately re-layout the composition content of an installation art on the restored building body, and can effectively avoid the restoration of the composition content due to the space illusion. The situation where the difference between before and after is too large occurs.

In order to achieve the above-mentioned purpose, the method for restoration of installation art applied to traditional architecture provided by the present invention first uses 3D laser scanning to collect the spatial position information of an installation art to obtain point cloud data of an installation art; and then use 3D The laser scanning method collects the spatial position information of a building body, and obtains the point cloud data of a building body; then, the point cloud data of the installation art and the point cloud data of the building body are uniformly calculated and established as a three-dimensional Virtual model; in the three-dimensional virtual model, the person calculates the spatial position of the installation art corresponding to the building body, and obtains a lofting information; finally, at the site of the building body, stake out based on the lofting information to calibrate the installation art The entity in the building body.

The restoration method of installation art applied to traditional architecture provided by the present invention is mainly to re-position the composition and content of the installation art through digital technology to relocate the three-dimensional space, so that the composition and content of the installation art can be accurately Lofting back to the original space position not only facilitates subsequent restoration by the craftsman, but also increases the possibility of restoration of the original image, so as to effectively avoid the situation where the composition content is too different before and after the restoration due to the spatial illusion.

Please refer to Figure 1, which is a schematic flow diagram of a preferred embodiment of the present invention, which discloses an installation art restoration method applied to traditional architecture. The installation art restoration method applied to traditional architecture includes the following steps:

Installation art data collection step S1: Use three-dimensional laser scanning to collect the spatial location information of an installation art to obtain point cloud data of an installation art, where the installation art is one of a plaster mural, painting or sculpture And when the point cloud data of the installation art is obtained, the two-dimensional image data of the installation art, scene surrounding images, related documents and field interviews are also collected to establish a verification data.

Building body data collection step S2: Use three-dimensional laser scanning to collect the spatial position information of a building body to obtain point cloud data of a building body. Among them, a laser scanner such as FARO Photon 120 or Konica Minolta vivid 910 can be used. Perform related 3D laser scanning operations.

Establish a three-dimensional virtual model Step S3: Perform unified calculation of the point cloud data of the installation art and the point cloud data of the building ontology, and establish a three-dimensional virtual model, in which the Bursa-Wolf seven-parameter conversion mode is used to perform the coordinates The benchmark is uniformly calculated, and after the 3D virtual model is established, the standard error calculation can be further performed to improve the accuracy of the 3D virtual model, and the accuracy of the 3D virtual model can be verified and adjusted through the verification data.

Step S4 of drafting the lofting process: In the three-dimensional virtual model, calculate the spatial position of the installation art corresponding to the building body to obtain lofting information. Among them, at least one lofting instrument placement coordinate is selected in the three-dimensional virtual model, and at least A reference position coordinate, and then calculate the angle between the reference position and the stakeout instrument and the installation art, and calculate the distance between the stakeout instrument and the installation art, so as to gather the stakeout information.

Actual stakeout step S5: At the site of the building body, stake out according to the stakeout information to calibrate the installation art to the entity of the building body, where it is on the site of the building body, corresponding to each of the stakeout instrument setting coordinates Place a theodolite of the whole station, and calibrate a reference position corresponding to each reference position coordinate, and then use the triangle method to stake out the angle and distance calculated from the stake out information.

In order to further understand the features of the invention, the technical means and the expected effects of the invention, the use of the invention is described. It is believed that a deeper and specific understanding of the invention can be obtained from this, as follows:

Please continue to refer to Figure 1. The following is an example of restoring a plaster mural. First, before the restoration of the building itself, the user can perform a three-dimensional laser scan of the plaster mural to be restored to collect The spatial positioning of the composition content of the stucco mural is established as the point cloud data of the installation art. At the same time, the user can also collect the two-dimensional image data of the stucco mural, scene surrounding images, related documents and field interviews, etc. After the verification data is generated, the building body is repaired, and after the building body repair is completed, three laser scanning methods are used to collect the spatial position information of the building body after the repair, and the point cloud data of the building body is obtained.

其中

：共軛點同時具備兩個點雲數據各自之三維空間坐標

：尺度

：分別繞三軸旋轉

角度之旋轉矩陣，公式如下：

然後依據統一計算完成之座標基準建立該三維虛擬模型，並且接續進行標準誤差計算及透過比對該驗證資料等方式進行精準度之驗證與調整，即完成該三維虛擬模型之建立作業。Then import the point cloud data of the installation art and the point cloud data of the building itself, and use the Bursa-Wolf seven-parameter conversion mode to calculate the coordinate base. The calculation method is based on the point cloud data of the installation art and the building. In the point cloud data of the body, search for more than three points of feature conjugate points at the same position, and calculate the conversion parameters between the two benchmarks, that is, seven conversion parameters such as a scale, three-axis translation and three-axis rotation. The relevant conversion formula is as follows Shown:

among them

: Conjugate point has the three-dimensional space coordinates of two point cloud data at the same time

:scale

: Rotate around three axes respectively

The rotation matrix of the angle, the formula is as follows:

Then the three-dimensional virtual model is established based on the coordinate base of the unified calculation, and then the standard error calculation and the accuracy verification and adjustment are performed by comparing the verification data, etc., to complete the creation of the three-dimensional virtual model.

After completing the 3D virtual model, the user can start the preparation of the stakeout process and the on-site stakeout. First, select the setting coordinates of the stakeout instrument in the 3D virtual model, and select the reference position coordinates. The reference position is usually the A clearly identifiable component in the building itself, and then use the triangle calculation method to calculate the angle between the reference position and the stakeout instrument and the installation art, and calculate the distance between the stakeout instrument and the installation art, so as to obtain the stakeout by consolidation Information, and finally on the site of the building itself, place the theodolite of the whole station corresponding to the coordinates of the lofting instrument, and locate and calibrate the reference position corresponding to the coordinates of the reference position, and then calculate the angle and distance obtained from the lofting information Sequential lofting, you can accurately loft the original composition and content of the plaster mural on the body of the building. This will not only facilitate subsequent repairs by the craftsman, but also increase the possibility of restoration of the original image. , In order to effectively avoid the excessive difference between the composition content before and after restoration due to the illusion of space.

Hereinafter, the characteristics of the present invention and the expected effects that can be achieved are stated as follows:

The restoration method of the installation art of the present invention applied to traditional buildings is to first obtain the point cloud data of the installation art before restoration and the point cloud data after restoration of the building body through the three-dimensional laser scanning technology, and then combine the point clouds of the two The data is uniformly calculated based on the coordinate base, and the 3D virtual model is created. Then, by using the point cloud coordinate spatial distribution and values provided by the 3D virtual model, the angle and distance required for lofting of the installation art are calculated, and aggregated into The lofting information is finally set out on the site of the building body according to the lofting information, and the installation art can be accurately lofted on the body of the building body. This is not only beneficial to subsequent repairs by the craftsman, but also improves The possibility of restoration of the original image to effectively avoid the situation where the composition content is too different before and after restoration due to the illusion of space.

In summary, the present invention has excellent practicality in similar products. At the same time, we have checked the domestic and foreign technical information about this type of structure. The literature has not found the same structure. Therefore, The present invention actually has the requirements for a patent for invention, and an application is filed in accordance with the law.

However, the above is only one of the preferred and feasible embodiments of the present invention. Therefore, any equivalent structural changes made by applying the specification of the present invention and the scope of the patent application should be included in the patent scope of the present invention.

S1: Collection steps of installation art materials S2: Steps to collect building ontology data S3: Steps to build a 3D virtual model S4: Drafting the steps of the stakeout process S5: Actual stakeout steps

Figure 1 is a schematic flow diagram of a preferred embodiment of the present invention.

S1: Collection steps of installation art materials

S2: Steps to collect building ontology data

S3: Steps to build a 3D virtual model

S4: Drafting the steps of the lofting process

S5: Actual stakeout steps

Claims (7)

An installation art restoration method applied to traditional architecture, which includes the following steps: Use three-dimensional laser scanning methods to collect the spatial location information of an installation art, and obtain the point cloud data of an installation art; Use the three-dimensional laser scanning method to collect the spatial position information of a building body, and obtain the point cloud data of a building body; Perform unified calculation of the coordinate base of the point cloud data of the installation art and the point cloud data of the building ontology, and establish a three-dimensional virtual model; In the three-dimensional virtual model, calculate the spatial position of the installation art corresponding to the building body to obtain a lofting information; At the site of the building body, stake out according to the stakeout information to mark the installation art on the body of the building body. According to the method for restoration of installation art applied to traditional buildings in the first item of the scope of patent application, wherein at least one lofting instrument setting coordinate is selected in the three-dimensional virtual model, and at least one reference position coordinate is selected, and then the reference position is calculated The angle between the stakeout instrument and the installation art, and the distance between the stakeout instrument and the installation art are calculated, and the stakeout information can be obtained by summarizing. According to the method for restoration of installation art applied to traditional buildings as described in item 2 of the scope of patent application, in which, on the site of the building itself, a full-station theodolite is placed corresponding to each of the coordinates of the lofting instrument, and corresponding to each The reference position coordinates calibrate a reference position, and then use the triangle method to stake out the angle and distance calculated from the stakeout information. According to the method of restoration of installation art applied to traditional architecture as described in item 1 of the scope of patent application, the Bursa-Wolf seven-parameter conversion mode is used for unified calculation of coordinate base. According to the device art restoration method applied to traditional buildings as described in item 1 of the scope of patent application, after the three-dimensional virtual model is established, the standard error calculation is further performed to improve the accuracy of the three-dimensional virtual model. According to the method for restoration of installation art applied to traditional architecture as described in item 1 of the scope of patent application, when the point cloud data of the installation art is obtained, the two-dimensional image data, scene environment image, and scene environment image of the installation art are also collected. Relevant documents and field interviews are established as a verification data, so that after the three-dimensional virtual model is established, the accuracy of the three-dimensional virtual model can be verified and adjusted. According to the method for restoration of installation art applied to traditional architecture as described in item 1 of the scope of patent application, the installation art is one of a plaster mural, painting or sculpture.

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