CN115457219B - Protection method for ancient building wood structure in building cultural heritage - Google Patents
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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
Technical Field
The invention relates to the field of protection methods of historic building wood structures, in particular to a protection method of an historic building wood structure in building cultural heritage.
Background
China is a large country with long history, and history culture sediment of two thousand years is a huge wealth left for China, wherein the huge wealth comprises technical wealth, and the huge wealth is an unprecedented treasure. For the technological wealth, the technology is continuously replaced from ancient times, and the technology of buildings and the like is continuously replaced, and ancient people also leave a plurality of places worth learning and inheriting by later people.
For ancient architecture, we mainly need to start from two aspects, namely, research and protection. For ancient wooden buildings, a plurality of special structural designs such as falcon mueller structures and the like are mostly used, for the ancient wooden building structures, we firstly learn the structures and the connection relations of the structures, apply the ancient wooden building structures on the basis of learning to be communicated with each other, and finally reasonably protect the ancient wooden building structures, thereby achieving the inheritance of the ancient wooden building structures.
At present, in the protection of the wooden structure of the ancient architecture, the protection method generally used is not unique, and is to properly protect the wooden structure of the ancient architecture according to the specific structure of the wooden structure of the ancient architecture, so that the wooden structure of the existing ancient architecture needs to be disassembled as little as possible or not, and the ancient architecture can be well preserved in a manner of reducing the use. However, although the wooden structure of the ancient building can be well preserved, the wooden structure of the ancient building is quite unfavorable for researchers to study, and good inheritance of the wooden structure of the ancient building cannot be achieved.
To solve the above problems, it has been proposed by students to study the wooden structure of the ancient architecture by making imitations, and to select a proper protection mode according to the study result, thereby protecting the wooden structure of the ancient architecture. However, such a method requires actual measurement and equal-proportion reduction of the historic building wood structure, the original fine parts in the historic building wood structure are more fine to imitate, a large amount of working hours are consumed, the working efficiency is seriously reduced, and meanwhile, the imitation is also required to be analyzed manually, so that the protection mode of the historic building wood structure can be obtained. If the computer is used for simulating the historic building wood structure, only the time for imitating the historic building wood structure is saved, and the time for obtaining the protection mode of the historic building wood structure through analysis does not have the saving effect.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, and provides a protection method for the historic building wood structure in the building cultural heritage, wherein the protection mode of the historic building wood structure is obtained by carrying out algorithm processing on the historic building wood structure simulated in a computer, so that the time for carrying out a large amount of work manually is saved, and the efficiency of researching the historic building wood structure is improved while the cultural relics are well protected.
Therefore, the invention provides a protection method for an ancient building wood structure in building cultural heritage, which comprises the following steps:
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;
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.
Further, the line processing includes the steps of:
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;
and 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.
Further, when obtaining the corresponding three-dimensional shape according to the edge coordinates, the method comprises the following steps:
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.
Further, the intersection point is a midpoint on an intersection of intersecting planes.
Further, 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;
and obtaining the coordinates of the representative coordinate point according to the central coordinates and the function unified vector.
Further, when calculating the center coordinates of the function, the abscissa of the center coordinates is the average of the abscissas of the coordinates of the respective points on the function, and the ordinate of the center coordinates is the average of the abscissas of the coordinates of the respective points on the function.
Further, each line corresponding to the building wood in the historic building wood structure is represented by using a different color.
Further, the database is further configured to store types of the historic building wood structures and corresponding vector ranges, and when the types of the historic building wood structures are obtained according to the position vectors, the method includes 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.
Further, the database can also accept updates and corrections made by the user.
The invention provides a protection method of an ancient building wood structure in building cultural heritage, which comprises the following steps of
The beneficial effects are that:
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 large amount of work manually is saved, and the efficiency of researching the historic building wood structure is improved while the cultural relics are well protected;
when the computer is used for judging the protection mode, the spatial position of each building wood can be displayed through the representation of the corner point and the characteristic point of each building wood by the computer simulation through coordinates, and then all the ancient building wood in the ancient building wood structure can be represented by a function mode according to the spatial position of the building wood and the representative point represented by the specific shape line of the building wood, and the protection mode is obtained by the relation among the functions, so that the computer simulation mode is continued, and the function of well protecting cultural relics and improving the research efficiency of the ancient building wood structure is achieved;
according to the invention, the building woods in the historic building wood structure are distinguished through different color marks, so that the visual effect is achieved, a researcher can clearly and intuitively see the structural relationship among the historic building woods in the historic building wood structure, the researcher can clearly and intuitively see the essence of the historic building wood structure in a shape line representation mode, and the structural relationship among the shape lines represented by different colors, the understanding of the protection mode obtained by the researcher on a computer is facilitated, and the subsequent correction of the protection mode of the historic building wood structure by the researcher is facilitated.
Drawings
FIG. 1 is a schematic block diagram of the overall process flow of the present invention;
FIG. 2 is a schematic block diagram of a method of line processing in accordance with the present invention;
FIG. 3 is a schematic block diagram of a method flow of the present invention for obtaining a corresponding three-dimensional shape from edge coordinates;
FIG. 4 is a schematic block diagram of a method for obtaining corresponding representative coordinate points according to a line representation function according to the present invention;
fig. 5 is a schematic block diagram of a method flow of the present invention for deriving the type of historic building timber structure from a position vector.
Detailed Description
One embodiment of the present invention will be described in detail below with reference to the attached drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.
Specifically, as shown in fig. 1-5, the embodiment of the invention provides a protection method for an ancient building wood structure in a building cultural heritage, which comprises the following steps:
firstly, 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;
secondly, 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;
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 ancient building wood structure according to all the position vectors in the ancient building wood structure;
fourth, according to the type of the historic building wood structure, a corresponding database is called, and the database is used for storing functions and protection modes corresponding to the functions;
and fifthly, 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.
According to the technical scheme, the steps (one) to (five) are sequentially carried out according to the logic sequence, each building wood in the ancient building wood structure is represented through the point cloud data, so that corresponding information interfaces are only needed to be led out from a computer, and then each building wood in the ancient building wood structure is represented in a line mode, so that the structural relation between the adjacent building wood is clearly known when the position of each building wood is studied, and meanwhile gaps are reserved between lines corresponding to the adjacent building wood, and the structural relation between the adjacent building wood can be clearly seen by researchers. Meanwhile, in order to achieve a better protection effect, the protection mode of the ancient building wood structure is judged from the data, namely the lines are expressed in a function mode, and as the lines are in a three-dimensional coordinate system, expressions are necessarily provided, so that representative coordinate points of all building woods in the ancient building wood structure can be directly determined, vectors of all building woods can be obtained by combining an origin, namely the position vectors in the invention, and the protection mode of the ancient building wood structure is obtained through the relation among the position vectors, and the protection mode of the ancient building wood structure is the protection mode of the whole ancient building wood structure for building woods at different positions. The protection mode of the invention uses the concrete protection operation process of the text description, such as plating each building wood in the historic building wood structure or performing anaerobic environmental protection on part of the building wood in each historic building wood structure.
When the computer is used for judging the protection mode, the spatial position of each building wood can be displayed through the representation of the corner point and the characteristic point of each building wood by the computer simulation through the coordinates, and then all the ancient building wood in the ancient building wood structure can be represented by the function mode according to the spatial position of the building wood and the representative point represented by the specific shape line of the building wood, and the protection mode is obtained through the relation among the functions, so that the computer simulation mode is continued, and the function of well protecting cultural relics and improving the research efficiency of the ancient building wood structure is achieved.
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) 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;
(2) 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;
(3) 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;
(4) And 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.
According to the technical scheme, the steps (1) to (4) are sequentially carried out according to the logic sequence, the three-dimensional shape of the building wood can be obtained by extracting the edge coordinates of the three-dimensional point cloud coordinates of the building wood, the edge outline of the building wood is obtained at the moment, the corresponding three-dimensional line drawing is drawn according to the edge outline, for example, the edge of the edge is drawn according to the cube, the three-dimensional line drawing of the cube can be obtained visually, the drawn three-dimensional line drawing is filled, and the corresponding point cloud quantity can be obtained in the point cloud coordinates. The number of the point clouds of the drawn virtual building wood is adjusted, namely the size of the drawn three-dimensional line drawing is adjusted, so that the three-dimensional line drawing after adjustment can be used for representing the lines corresponding to the building wood, the relationship between the lines corresponding to the building wood and the positions and the sizes of the building wood is equivalent, the relationship between the lines corresponding to the building wood and the positions of the building wood is further enabled to be in the middle of the positions of the building wood, when a researcher observes, the relationship between the lines can be clearly observed, and each complete line can be clearly seen. The ratio set in step (3) is generally about 40%, and is set by the operator.
Meanwhile, as a preferable mode of the above technical solution, in order to make the above technical solution better implemented, when obtaining a corresponding three-dimensional shape according to the edge coordinates, the method includes the following steps:
dividing the surface formed by the edge coordinates into a plurality of planes, wherein adjacent planes are intersected;
secondly, taking a point on the intersecting line of each intersecting plane as an intersecting line point, and taking the intersecting point of at least three planes as an intersecting plane point;
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;
and < four > outputting the three-dimensional pattern of each point after connection as the three-dimensional shape.
In the technical scheme, the steps < first > to < fourth > are sequentially carried out according to the logic sequence, the record is carried out through intersecting lines among planes, and each plane on the outer surface of the building wood is traversed, so that each intersecting line can be obtained. The three-dimensional shape thus obtained can be better restored to the original three-dimensional shape of the construction wood. The example drawn in this manner draws a circle as a circle.
Meanwhile, as a preferable mode of the above technical scheme, the intersecting line point is a midpoint on an intersecting line of intersecting planes. This allows the graphics in the three-dimensional shape to be made up to lie on the same plane, just on the same plane, when the points are connected, and the resulting three-dimensional shape is centered relative to the position of the construction wood represented in the position series of the construction wood.
In addition, in order to make the representative coordinate point more truly accurate when the representative coordinate point is obtained, in the embodiment of the present invention, when the corresponding representative coordinate point is obtained according to the expression function of the line, the method includes the following steps:
<1> calculating the center coordinates of the function, and obtaining each coordinate point on the function;
<2> obtaining the vector from each center coordinate to each coordinate point in the function as the corresponding function vector;
<3> vector sum operation is carried out on each function vector to obtain a function unified vector;
<4> obtaining the coordinates of the representative coordinate point from the center coordinates and the function unification vector.
In the above technical solution, steps <1> to <4> are sequentially performed according to a logic sequence, 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 the representative coordinate points are considered, the final sum vector, that is, the function unified vector, is obtained by summing the vectors, and the corresponding representative coordinate points are obtained by considering the appearance structure of the building wood, so that the accuracy of the building wood position is better than that of the traditional method using the average or median of the abscissa and the ordinate, because the calculation process includes the position representation of the vector for each point, and the vector for each point, that is, the direction and the representation of the quantity in the direction of each point of the building wood, so that the concrete shape and the structural relationship can be expressed.
Meanwhile, as a preferable mode of the above technical scheme, 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 abscissas of the coordinates of each point on the function. Thus, the representative coordinate point used in the invention is the correction of the central coordinate of the function, so that the representative coordinate point can represent the position relation of the building wood.
In an embodiment of the present invention, each of the building wood lines in the ancient building wood structure is represented using a different color. According to the invention, the building woods in the historic building wood structure are distinguished through different color marks, so that the visual effect is achieved, a researcher can clearly and intuitively see the structural relationship among the historic building woods in the historic building wood structure, the researcher can clearly and intuitively see the essence of the historic building wood structure in a shape line representation mode, and the structural relationship among the shape lines represented by different colors, the understanding of the protection mode obtained by the researcher on a computer is facilitated, and the subsequent correction of the protection mode of the historic building wood structure by the researcher is facilitated.
In addition, in the embodiment of the present invention, the database is further configured to store types of the historic building wood structures and corresponding vector ranges, and when the types of the historic building wood structures are obtained according to the position vectors, the method includes the following steps:
-1-extracting the end point coordinates of each position vector in the historic building wood structure;
-2-matching corresponding vector ranges in the database according to the respective end point coordinates;
-3-outputting the type of the historic building wood structure corresponding to the successfully matched vector range.
In the above technical solution, steps-1-to-3-are sequentially performed in a logical order, and the vector ranges in the present invention represent the same direction, the amounts in the directions are within the set range, and the protection methods of the ranges are the same, so that when the same vector ranges are satisfied, the same ancient wood structure is considered as the same type, and the protection is performed in the corresponding same manner.
In an embodiment of the invention, the database is also capable of accepting updates and corrections thereto by a user. Therefore, the protection mode which can be provided by the invention is always the latest mode, and the protection mode can be timely adjusted along with the plan protection mode due to the fact that revisions are received.
In the invention, the protection mode is obtained through calculation by a computer, and in the research process of researchers, the protection mode also supports the researchers to correct the protection mode, stores the corrected result, and can also be selectively learned by introducing a machine learning mode for updating and adjusting the technical scheme provided by the invention.
The foregoing disclosure is merely illustrative of some embodiments of the invention, but the embodiments are not limited thereto and variations within the scope of the invention will be apparent to those skilled in the art.
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.
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Application publication date: 20221209 Assignee: Inner Mongolia Gaolunte Construction Co.,Ltd. Assignor: INNER MONGOLIA University OF TECHNOLOGY Contract record no.: X2024150000002 Denomination of invention: A method for protecting ancient wooden structures in architectural cultural heritage Granted publication date: 20230815 License type: Common License Record date: 20240529 |