CN115457219B - Protection method for ancient building wood structure in building cultural heritage - Google Patents

Abstract

The invention discloses a protection method of an ancient building wood structure in building cultural heritage, which comprises the steps of firstly, receiving the ancient building wood structure simulated by a computer, separating out each building wood in the ancient building wood structure, establishing a three-dimensional point cloud coordinate system, and clustering point cloud coordinates corresponding to each building wood in the ancient building wood structure to obtain lines corresponding to each building wood, a representation function of the lines and corresponding representative coordinate points; sequentially drawing vectors from each representative coordinate point to the origin of coordinates, and obtaining the type of the historic building wood structure according to the vectors; and finally, sequentially matching all functions in the historic building wood structure with functions in a database to obtain and output a protection mode of the functions. According to the invention, the protection mode of the historic building wood structure is obtained by carrying out algorithm processing on the historic building wood structure simulated in the computer, so that the time for carrying out a great deal of work manually is saved, and the efficiency of researching the historic building wood structure is improved while the cultural relics are well protected.

Description

A protection method for ancient architectural wooden structures in architectural cultural heritage

technical field

The invention relates to the field of protection methods for ancient building wooden structures, in particular to a protection method for ancient building wooden structures in architectural cultural heritage.

Background technique

my country is a big country with a long history. Two thousand years of historical and cultural precipitation has left behind huge wealth for our country, including technological wealth, which are rare treasures. As for technological wealth, technology has been constantly changing from ancient times to the present, and the technology of buildings and other buildings has been constantly changing. At the same time, the ancients have left many places worthy of learning and inheritance by our descendants.

For ancient buildings, when we inherit them, we mainly need to start from two aspects, the first is research, and the second is protection. For ancient wooden buildings, most of them use some proprietary structural designs such as the Falcon structure. For this type of ancient wooden structures, we must first learn their structures and their connection relationships, and use what we have learned to apply them. It is applied, and finally these are reasonably protected, so as to achieve the inheritance of ancient wooden structures.

At present, in the protection of ancient building wooden structures, the protection methods usually used are not unique. They are all based on the specific structure of ancient building wooden structures, and they are properly protected. In this way, the existing ancient building wooden structures need to be protected. The structure should be dismantled as little or not as possible, so that the ancient buildings can be well preserved by reducing the use. However, although this can preserve the wooden structure of ancient buildings well, it is very unfavorable for researchers to study it, and it cannot achieve a good inheritance of wooden structures of ancient buildings.

In view of the above problems, some scholars currently propose that the wooden structure of ancient buildings can be studied by making imitations, and the appropriate protection method can be selected according to the research results, so as to protect the wooden structure of ancient buildings. However, this method requires actual measurement and proportional restoration of the wooden structure of ancient buildings. The original fine parts in the wooden structure of ancient buildings need to be imitated more finely, which requires a lot of man-hours and seriously reduces the work efficiency. , At the same time, it is also necessary to artificially analyze the imitation products in order to obtain the protection method for the wooden structure of ancient buildings. However, if the computer is used to simulate the wooden structure of ancient buildings, it only saves the time of imitating the wooden structure of ancient buildings, and does not save the time of analyzing the way in which the wooden structures of ancient buildings are protected.

Contents of the invention

The purpose of the present invention is to overcome the problems existing in the above-mentioned prior art, provide a kind of protection method of the ancient architectural wooden structure in the architectural cultural heritage, carry out the processing of algorithm by the ancient architectural wooden structure simulated in the computer and obtain the ancient architectural wooden structure The protection method saves a lot of time for man-made work, and improves the efficiency of research on ancient wooden structures while protecting cultural relics.

For this reason, the present invention provides a kind of protection method of ancient architectural wooden structure in architectural cultural heritage, comprises the steps:

Receive the computer-simulated ancient wooden structure, and separate each building wood in the ancient building wooden structure, establish a three-dimensional point cloud coordinate system, and collect the point cloud coordinates corresponding to each of the ancient building wooden structures respectively kind;

Perform line processing on the point cloud coordinates corresponding to each of the building blocks, obtain a line corresponding to each of the building blocks and a representation function of the line, and obtain its corresponding representative coordinate point according to the representation function of the line;

Draw the vectors between each representative coordinate point and the coordinate origin in turn to obtain the corresponding position vectors of each building wood and normalize each position vector, and obtain the type of ancient building wood structure according to all the position vectors in the ancient building wood structure ;

Call the corresponding database according to the type of ancient building wooden structure, and the database is used to store functions and protection methods corresponding to the functions;

All the functions in the wooden structure of the ancient building are sequentially matched with the functions in the database, and the corresponding protection methods are obtained, and all the protection methods are combined and output.

Further, the line processing includes the following steps:

Extracting the edge coordinates of the three-dimensional point cloud coordinates of the building wood, obtaining its corresponding three-dimensional shape according to its edge coordinates, and drawing its corresponding three-dimensional line drawing according to the corresponding three-dimensional shape of the building wood;

Fill the drawn three-dimensional line drawing into the virtual point cloud to obtain the virtual building wood, and obtain the number of point clouds of the virtual building wood;

Obtain the number of point clouds of the building wood, adjust the number of point clouds of the virtual building wood according to the number of point clouds of the building wood, so that the number of point clouds of the virtual building wood and the number of point clouds of the building wood reach The set ratio range;

Output the adjusted point cloud of the building wood, and obtain its edge coordinates according to it, and output the corresponding three-dimensional line drawing as the corresponding line of the building wood.

Furthermore, when obtaining the corresponding three-dimensional shape according to the edge coordinates, the following steps are included:

Divide the surface formed by the edge coordinates into several planes, and adjacent planes intersect;

Take a point on the intersection line of each intersecting plane and record it as the intersection point, and record the point where at least three planes intersect as the intersection point;

Connect adjacent intersection points and intersection points, intersection points and intersection points, intersection points and intersection points in turn, and the line formed by the connected points is located on the plane where the connected points are located;

The three-dimensional graphics of the connected points are output as the three-dimensional shape.

Furthermore, the point of intersection is a midpoint on the intersection of intersecting planes.

Further, when the corresponding representative coordinate points are obtained according to the representation function of the line, the following steps are included:

Calculate the central coordinates of the function and get each coordinate point on the function;

Get the vector from each center coordinate to each coordinate point in the function as its corresponding function vector;

Carrying out a vector sum operation on each of the function vectors to obtain a function uniform vector;

The coordinates of the representative coordinate point are obtained according to the central coordinates and the uniform vector of the function.

Furthermore, when calculating the central coordinate of the function, the abscissa of the central coordinate is the average of the abscissa of the coordinates of each point on the function, and the ordinate of the central coordinate is the ordinate of the coordinates of each point on the function the average of .

Further, the lines corresponding to each building wood in the ancient building wooden structure are represented by different colors.

Further, the database is also used to store the type of the ancient wooden structure and the corresponding vector range, and when obtaining the type of the ancient wooden structure according to the position vector, the following steps are included:

Extract the end point coordinates of each position vector in the wooden structure of the ancient building;

matching the corresponding vector range in the database according to the coordinates of each end point;

Output the type of ancient building timber structure corresponding to the successful vector range.

Further, the database can also be updated and corrected by users.

A kind of protection method of ancient architectural wooden structure in architectural cultural heritage provided by the present invention has the following functions:

Beneficial effect:

The invention obtains the protection mode of the ancient building wooden structure through algorithm processing of the ancient building wooden structure simulated in the computer, which saves a lot of time for man-made work, and improves the research efficiency of the ancient building wooden structure while protecting the cultural relics well. efficiency;

When the present invention uses a computer to judge the protection mode, the corner points and feature points of each building wood simulated by the computer are represented by coordinates, so that the spatial positions of each building wood can be displayed, and then according to the space of the building wood The positions and the representative points represented by their specific shapes and lines can represent all the ancient building wood in the ancient building wooden structure in the form of functions, and then the relationship between functions can be protected, so that the computer simulation can be carried out Continuation plays a role in improving the efficiency of research on wooden structures of ancient buildings while protecting cultural relics well;

The present invention distinguishes each building wood in the ancient building wood structure through different color marks, so that the visual effect can also be used to allow researchers to clearly and intuitively see the structure between the ancient building wood structures The relationship between shapes and lines allows researchers to clearly and intuitively see the essence of the wooden structure of ancient buildings, as well as the structural relationship between shapes and lines represented by different colors, which will help researchers to understand the protection methods derived by computers. Understanding is also convenient for researchers to make subsequent corrections to the protection methods of ancient wooden structures.

Description of drawings

Fig. 1 is a schematic block diagram of the overall method flow of the present invention;

Fig. 2 is a schematic block diagram of the method flow process of line processing in the present invention;

Fig. 3 is a schematic block diagram of the method flow for obtaining the corresponding three-dimensional shape according to the edge coordinates of the present invention;

Fig. 4 is a schematic block diagram of the method flow for obtaining corresponding representative coordinate points according to the representation function of the lines in the present invention;

Fig. 5 is a schematic block diagram of the method for obtaining the type of ancient building wooden structure according to the position vector of the present invention.

Detailed ways

A specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

Specifically, as shown in Figures 1-5, an embodiment of the present invention provides a method for protecting an ancient wooden structure in architectural cultural heritage, including the following steps:

(1) Receive the ancient building wood structure simulated by computer, and separate each building wood in the ancient building wood structure, establish a three-dimensional point cloud coordinate system, and point cloud coordinates corresponding to each said building wood in the ancient building wood structure clustering separately;

(2) Carry out line processing to the point cloud coordinates corresponding to each of the building blocks, obtain the corresponding lines of each of the building blocks and the representation function of the lines, and obtain their corresponding representative coordinate points according to the representation functions of the lines;

(3) Draw the vectors between each representative coordinate point and the coordinate origin in turn to obtain the corresponding position vectors of each building wood and normalize each position vector, and obtain the ancient building wood according to all the position vectors in the ancient building wood structure the type of structure;

(4) According to the type of the ancient building wooden structure, the corresponding database is called, and the database is used to store functions and protection methods corresponding to the functions;

(5) matching all the functions in the wooden structure of the ancient building with the functions in the database in sequence, and obtaining the corresponding protection methods, merging and outputting all the protection methods.

In the above technical solution, steps (1) to (5) are carried out sequentially in a logical order. The present invention uses point cloud data to represent each building wood in the ancient building wood structure, so that only the corresponding information needs to be derived from the computer After that, the present invention expresses each building wood in the ancient building wood structure by means of lines, so that when researching, it is possible to clearly understand the structural relationship between the positions of each building wood and the adjacent building wood , at the same time there is a gap between the lines corresponding to the adjacent building wood, so that the researchers can clearly see the structural relationship between the adjacent building wood. At the same time, in order to achieve a better protection effect, we judge the protection method for ancient wooden structures from the perspective of data, that is, express the above-mentioned lines through functions. Since the lines are in the three-dimensional coordinate system, they must have expressions In this way, the representative coordinate points of each building wood in the ancient building wood structure can be directly determined, so that the vectors of each building wood can be obtained by combining the origin, which is the position vector in the present invention, and then through the relationship between the position vectors relationship, obtain the protection mode of the ancient building wooden structure of the present invention, for the building wood in different positions, the protection mode that has like this will be the protection mode for the whole ancient building wooden structure. The protection method of the present invention uses a specific protection operation process described in words, such as plating each building wood in the ancient building wooden structure, or performing anaerobic environmental protection on some building wood in each ancient building wooden structure.

When the present invention uses a computer to judge the protection mode, the corner points and feature points of each building wood simulated by the computer are represented by coordinates, so that the spatial positions of each building wood can be displayed, and then according to the space of the building wood The positions and the representative points represented by their specific shapes and lines can represent all the ancient building wood in the ancient building wooden structure in the form of functions, and then the relationship between functions can be protected, so that the computer simulation can be carried out Continuation plays a role in improving the efficiency of research on wooden structures of ancient buildings while protecting cultural relics well.

In an embodiment of the present invention, in order to introduce the above technical solution in detail, the line processing includes the following steps:

(1) extract the edge coordinates of the three-dimensional point cloud coordinates of the building wood, obtain its corresponding three-dimensional shape according to its edge coordinates, draw its corresponding three-dimensional line drawing according to the corresponding three-dimensional shape of the building wood;

(2) fill the virtual point cloud with the drawn three-dimensional line drawing to obtain the virtual building wood, and obtain the number of point clouds of the virtual building wood;

(3) Obtain the point cloud quantity of the building wood, adjust the point cloud quantity of the virtual building wood according to the point cloud quantity of the building wood, so that the point cloud quantity of the virtual building wood is the same as the point cloud quantity of the building wood The number of clouds reaches the set ratio range;

(4) Output the adjusted point cloud of the building wood, and obtain its edge coordinates according to this, and output the corresponding three-dimensional line drawing as the corresponding line of the building wood.

In the above technical solution, steps (1) to (4) are carried out sequentially in a logical order, and by extracting the edge coordinates of the three-dimensional point cloud coordinates of the building wood, the three-dimensional shape of the building wood can be obtained. What is the edge profile of the building wood, draw its corresponding three-dimensional line drawing based on this, for example, draw the edge of its edge according to the cube, you can visually get the three-dimensional line drawing of the cube, and fill the drawn three-dimensional line drawing , so that the corresponding number of point clouds can be obtained in the point cloud coordinates. By adjusting the point cloud number of the drawn virtual building wood, that is, adjusting the size of the drawn three-dimensional line drawing, the adjusted three-dimensional line drawing can be used to represent the corresponding lines of the building wood, and make the corresponding The relationship between the line and the position and size of the building wood is equivalent, so that the line corresponding to the building wood is in the middle of the position of the building wood. When the researchers observe, they can clearly see the relationship between the lines. Clearly see each complete line. The ratio range set in step (3) is generally about 40%, and is set by the implementer.

At the same time, as an optimization of the above technical solution, in order to make the above technical solution better implemented, when obtaining the corresponding three-dimensional shape according to the edge coordinates, the following steps are included:

<1> Divide the surface formed by the edge coordinates into several planes, and the adjacent planes intersect;

<2> Take a point on the intersection line of each intersecting plane and record it as the intersection point, and record the point where at least three planes intersect as the intersection point;

<3> Connect adjacent intersection points with intersection points, intersection points with intersection points, intersection points with intersection points in turn, and the line formed by the connected points is located on the plane where the connected points are located;

<4> Output the 3D graphics of each connected point as the 3D shape.

In the above technical solution, step <1> to step <4> are carried out sequentially according to the logical sequence, and the intersection lines between the planes are recorded, and each plane of the outer surface of the building wood is traversed, so that each intersection line can be obtained. The present invention It is the intersection line formed by checking points, so that the obtained intersection line is more perfect, and it can better form a three-dimensional shape. As for the number of planes in the curve, this needs to be determined according to the resolution accuracy of the plane. The resulting three-dimensional shape can better restore the three-dimensional shape of the original building wood. According to the example drawn in this way, the torus is drawn as a circle.

At the same time, as a preference of the above technical solution, the point of intersection is a midpoint on the intersection of intersecting planes. In this way, when each point is connected, the figures in the formed three-dimensional shape can be located on the same plane, on the same plane, and the position of the obtained three-dimensional shape relative to the building wood shown in the play the center of the location.

In addition, in order to make the representative coordinate point more real and accurate, in the embodiment of the present invention, when the corresponding representative coordinate point is obtained according to the representation function of the line, the following steps are included:

<1>Calculate the central coordinates of the function, and get each coordinate point on the function;

<2> Obtain the vector from each center coordinate to each coordinate point in the function as its corresponding function vector;

<3> carry out the sum operation of vector to each described function vector to obtain the function uniform vector;

<4> Obtain the coordinates of the representative coordinate point according to the central coordinates and the uniform vector of the function.

In the above technical solution, step <1> to step <4> are carried out sequentially in a logical order, and the representative coordinate points of the building wood are determined by means of vectors, so that the shape of the building wood is also considered, and when it is considered , the final sum vector is obtained through the sum of the vectors, that is, the uniform vector of the function. By considering the shape and structure of the building wood, the corresponding representative coordinate points are obtained. Compared with the traditional average or median of the abscissa and ordinate The number has the accuracy of the position of the building wood, because through the operation process, it contains the position representation of the vector of each point, and the vector of each point is the direction and direction of each point of the building wood. The representation of can express the specific shape and structural relationship.

At the same time, as a preference of the above technical solution, when calculating the central coordinate of the function, the abscissa of the central coordinate is the average of the abscissas of the coordinates of each point on the function, and the ordinate of the central coordinate is the average of the coordinates of each point on the function. The mean of the ordinates of the point's coordinates. Therefore, the representative coordinate point used in the present invention is the correction of the central coordinate of the function, so that it can better represent the positional relationship of the building wood.

In the embodiment of the present invention, the lines corresponding to each of the building trees in the ancient building wooden structure are represented by different colors. The present invention distinguishes each building wood in the ancient building wood structure through different color marks, so that the visual effect can also be used to allow researchers to clearly and intuitively see the structure between the ancient building wood structures The relationship between shapes and lines allows researchers to clearly and intuitively see the essence of the wooden structure of ancient buildings, as well as the structural relationship between shapes and lines represented by different colors, which will help researchers to understand the protection methods derived by computers. Understanding is also convenient for researchers to make subsequent corrections to the protection methods of ancient wooden structures.

In addition, in an embodiment of the present invention, the database is also used to store the type of ancient building wooden structure and the corresponding vector range, and when obtaining the type of ancient building wooden structure according to the position vector, the following steps are included:

-1- Extract the end point coordinates of each position vector in the wooden structure of the ancient building;

-2- Match the corresponding vector range in the database according to the coordinates of each end point;

-3- Output the type of ancient wooden structure corresponding to the successful vector range.

In the above-mentioned technical solution, step-1- to step-3-are carried out sequentially according to the logical sequence, the vector range in the present invention means that the direction is the same, and the amount in the direction is within the set range, the protection method of this range is The same, therefore, when meeting the same vector range, it is considered to be the same type of ancient building wooden structure, so it is protected in the same way.

In an embodiment of the present invention, the database can also be updated and corrected by users. In this way, the protection method that can be provided by the invention can always be the latest method, and at the same time, due to receiving revisions, it can also be adjusted in time with the planned protection method.

In the present invention, the protection method is obtained through computer calculations. During the research process, researchers are also supported to modify it and store the corrected results. Machine learning can also be introduced. It can be selectively studied in a manner to update and adjust the technical solutions provided by the present invention.

The above disclosures are only a few specific embodiments of the present invention, however, the embodiments of the present invention are not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (7)

1. The protection method of the ancient building wood structure in the building cultural heritage is characterized by comprising the following steps of:

receiving an ancient building wood structure simulated by a computer, separating each building wood in the ancient building wood structure, establishing a three-dimensional point cloud coordinate system, and clustering point cloud coordinates corresponding to each building wood in the ancient building wood structure;

carrying out line processing on the point cloud coordinates corresponding to each building wood to obtain lines corresponding to each building wood and a representing function of the lines, and obtaining corresponding representing coordinate points according to the representing functions of the lines;

the line processing comprises the following steps:

extracting edge coordinates of the three-dimensional point cloud coordinates of the building wood, obtaining a corresponding three-dimensional shape according to the edge coordinates, and drawing a corresponding three-dimensional line drawing according to the corresponding three-dimensional shape of the building wood;

filling virtual point clouds into the drawn three-dimensional line drawing to obtain virtual building wood, and obtaining the number of the point clouds of the virtual building wood;

the method comprises the steps of obtaining the number of point clouds of building wood, and adjusting the number of point clouds of the virtual building wood according to the number of the point clouds of the building wood so that the number of the point clouds of the virtual building wood and the number of the point clouds of the building wood reach a set proportion range;

outputting the adjusted point cloud of the building wood, obtaining the edge coordinates of the point cloud, and outputting a corresponding three-dimensional line drawing as a line corresponding to the building wood;

when obtaining the corresponding representative coordinate point according to the expression function of the line, the method comprises the following steps:

calculating the center coordinates of the function, and obtaining each coordinate point on the function;

obtaining the vector from each center coordinate to each coordinate point in the function as the corresponding function vector;

vector sum operation is carried out on each function vector to obtain a function unified vector;

obtaining the coordinates of the representative coordinate points according to the central coordinates and the function unified vector;

sequentially drawing vectors from each representative coordinate point to the coordinate origin to obtain position vectors corresponding to each building wood, carrying out normalization processing on each position vector, and obtaining the type of the historic building wood structure according to all the position vectors in the historic building wood structure;

according to the types of the historic building wood structures, a corresponding database is called, and the database is used for storing functions and protection modes corresponding to the functions;

and sequentially matching all functions in the historic building wood structure with the functions in the database, obtaining corresponding protection modes, and combining and outputting all the protection modes.

2. The method for protecting an ancient architecture wood structure in a cultural heritage of building according to claim 1, wherein when a corresponding three-dimensional shape is obtained according to edge coordinates, comprising the steps of:

dividing the surface formed by the edge coordinates into a plurality of planes, and intersecting the adjacent planes;

taking a point on the intersecting line of each intersecting plane as an intersecting line point, and taking the intersecting points of at least three planes as intersecting plane points;

connecting adjacent intersecting points with each other, and intersecting points with each other in sequence, wherein a line formed by the connected points is positioned on a plane where the connected points are positioned;

outputting the three-dimensional graph of each connected point to be the three-dimensional shape.

3. The method of claim 2, wherein the intersection is a midpoint of the intersection of intersecting planes.

4. The method for protecting an ancient architecture wooden structure in a cultural heritage of building according to claim 1, wherein when calculating a central coordinate of a function, an abscissa of the central coordinate is an average of abscissas of respective points on the function, and an ordinate of the central coordinate is an average of abscissas of respective points on the function.

5. The method of claim 1, wherein each of the lines of the historic building wood structure is represented by a different color.

6. The method for protecting an ancient architecture wood structure in a cultural heritage of claim 1, wherein the database is further used for storing types of the ancient architecture wood structure and corresponding vector ranges, and when the types of the ancient architecture wood structure are obtained according to the position vectors, the method comprises the following steps:

extracting the end point coordinates of each position vector in the historic building wood structure;

matching corresponding vector ranges in the database according to each end point coordinate;

and outputting the types of the historic building wood structures corresponding to the successfully matched vector range.

7. The method of claim 1, wherein the database is further capable of receiving updates and modifications from a user.