CN113870426A - Three-dimensional space coordinate conversion method, storage medium and computing device - Google Patents
Three-dimensional space coordinate conversion method, storage medium and computing device Download PDFInfo
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Abstract
The present invention relates to the field of map data processing, and in particular, to a three-dimensional space coordinate transformation method, a storage medium, and a computing device. The method comprises the following steps: establishing a virtual mine area which is completely the same as the real mine area according to the two-dimensional map and the contour topographic map of the real mine area; establishing a corresponding relation between a real mine area coordinate origin and a virtual mine area coordinate origin, and inputting the virtual mine area into a Unity simulation environment; another reference point is taken at the same position in the real mine area and the virtual mine area, the reference point and the coordinate origin are mutually independent, and the proportional relation between the longitude and latitude coordinates of the real mine area and the three-dimensional virtual space coordinates of the virtual mine area is obtained, so that the X-Z space coordinate projection transformation from the longitude and latitude coordinate information of the real mine area to the three-dimensional virtual space coordinates of the virtual mine area is realized; after the X-Z plane coordinates of the virtual mining area are determined, the y value, namely the height value, of the geographic position point of the longitude and latitude coordinates in the virtual mining area is obtained in the Unity simulation environment.
Description
Technical Field
The invention relates to the field of mining area terrain management, in particular to a three-dimensional space coordinate conversion method, a storage medium and a computing device for a real mining area and a virtual mining area.
Background
Because the terrain structure of the mine area can be changed in different degrees in each operation period according to production operation requirements, the terrain of the real mine area needs to be converted into a three-dimensional virtual mine area for visual management, and because the longitude and latitude information of the real mine area cannot be directly associated with the coordinate points of the virtual mine area in the conversion process, the height value of the corresponding coordinate points cannot be directly obtained through the longitude and latitude information in the virtual mine area and the height is updated.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the present invention provides a three-dimensional space coordinate transformation method, a storage medium and a computing device, so as to achieve synchronization of data of a real mining area and a virtual mining area and obtain height variation of the mining area.
To this end, a first aspect of the present application provides a three-dimensional space coordinate conversion method, including:
step S1: establishing a virtual mine area which is completely the same as the real mine area according to the two-dimensional map and the contour topographic map of the real mine area;
step S2: establishing a corresponding relation between a real mine area coordinate origin and a virtual mine area coordinate origin, and inputting the virtual mine area into a Unity simulation environment;
step S3: another reference point is taken at the same position in the real mine area and the virtual mine area, the reference point and the coordinate origin are mutually independent, and the proportional relation between the longitude and latitude coordinates of the real mine area and the three-dimensional virtual space coordinates of the virtual mine area is obtained, so that the X-Z space coordinate projection transformation from the longitude and latitude coordinate information of the real mine area to the three-dimensional virtual space coordinates of the virtual mine area is realized;
step S4: after the X-Z plane coordinates of the virtual mining area are determined, the Y value, namely the height value, of the three-dimensional virtual space coordinates of the longitude and latitude geographic position points in the virtual mining area is obtained in the Unity simulation environment.
Further, the step S1 specifically includes:
(1) selecting a map range in which a 3D terrain needs to be drawn according to a two-dimensional map and a contour topographic map of a real mining area;
(2) converting the contour topographic map of the determined range into a height map;
(3) and importing the height map into 3D mapping software, and automatically identifying the position information of the height map through a terrain editor of the 3D mapping software to generate a 3D terrain.
Further, the 3D drawing software is one of 3Dmax and Sketchup.
Further, step S2 specifically includes: selecting a certain geographic marking point in the real mining area as a coordinate origin, recording longitude and latitude coordinates of the point, selecting a virtual mining area coordinate origin corresponding to the coordinate origin of the real mining area in the virtual mining area, and inputting the virtual mining area into a Unity simulation environment.
Further, in the step S2, the lower left corner of the mine area is selected as the origin of coordinates.
Further, the step S3 specifically includes:
step S31: another reference point is taken at the same position in the real mining area and the virtual mining area, the reference point and the origin of coordinates are mutually independent, and the longitude and latitude coordinates of the reference point in the real mining area and the three-dimensional virtual coordinates of the reference point in the virtual mining area are respectively recorded;
step S32: and solving the proportional relation between the longitude and latitude coordinates of the real mine area and the three-dimensional virtual space coordinates of the virtual mine area according to the corresponding relation between the coordinate origin of the real mine area and the virtual mine area and the space coordinates of the reference point, thereby realizing the X-Z space coordinate projection transformation from the longitude and latitude coordinate information of the real mine area to the three-dimensional virtual space coordinates of the virtual mine area, wherein the Y value of the three-dimensional virtual space coordinates is used for expressing the height information of the virtual mine area.
Further, the step S32 specifically includes:
(1) selecting a coordinate origin Oo (0, y,0) of a three-dimensional virtual space coordinate, and recording longitude and latitude information J1 of the coordinate origin in a real mining area, wherein y is an arbitrary value;
(2) in the X-Z plane space, selecting the coordinates (X1, Z1) of another point in the virtual mining area, and simultaneously recording the longitude and latitude information J2 of the point in the real world again, wherein the conversion ratio k of the longitude and latitude value to the virtual mining area is as follows: (J2_ X-J1_ X)/(X1-Oo) ═ J2_ X-J1_ X)/X1, where J1_ X, J1_ z, J2_ X, J2_ z respectively represent longitude information and latitude information in latitude and longitude information J1, J2; for longitude and latitude information Jn of any point in the real mining area, the x coordinate of the point in the virtual mining area is (Jn _ x/k), and the z coordinate is (Jn _ z/k); wherein Jn _ x and Jn _ z respectively represent longitude information and latitude information in the longitude and latitude information Jn.
Further, the step S4 specifically includes:
(1) newly building a virtual sphere, adding rigid body attributes to the virtual sphere, and setting an X-Z coordinate of the virtual sphere as a coordinate position in a virtual mining area obtained through longitude and latitude conversion; setting the y value of the sphere as the maximum height value of the current virtual mining area;
(2) the ball body is allowed to make free falling body movement, and the rotation and the displacement of the ball body after falling to the ground are limited;
(3) detecting a dropping point of a sphere dropping to a virtual mining area, wherein the dropping point is a three-dimensional virtual space coordinate point corresponding to the longitude and latitude coordinate point, and the y value of the dropping point is a height value corresponding to the longitude and latitude coordinate point; or by emitting rays right below the sphere, the point location height of the virtual mining area hit by the rays is the y value of the point, namely the height value.
A second aspect of the embodiments of the present application provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the three-dimensional space coordinate conversion method according to the first aspect of the present application.
A second aspect of the embodiments of the present application provides a computing apparatus, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor, when executing, implements the steps in the three-dimensional space coordinate transformation method according to the first aspect of the present application.
The invention realizes the following technical effects:
the invention adopts the unity simulation environment to realize the three-dimensional space coordinate conversion method of the real mining area and the virtual mining area, so as to realize the dynamic update of the virtual mining area data and inquire the height value of the coordinate point in the virtual mining area by inputting the longitude and latitude coordinates.
Drawings
FIG. 1 is a flow chart of a three-dimensional spatial coordinate transformation method of the present invention;
FIG. 2 is a diagrammatic representation of a virtual mine;
fig. 3 is a diagram illustrating the relative relationship between the established virtual sphere and the virtual mine area.
Detailed Description
To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1, 2 and 3, the invention provides a three-dimensional space coordinate transformation method for a real mining area and a virtual mining area, which comprises the following steps:
step S1: and establishing a virtual mine area which is completely the same as the real mine area according to the two-dimensional map and the contour topographic map of the real mine area. This step is implemented by 3D graphics software such as 3Dmax, Sketchup, etc.
If 3Dmax is adopted, the implementation mode is as follows:
(1) selecting a map range in which a 3D terrain needs to be drawn according to a two-dimensional map and a contour topographic map (such as a CAD format drawing) of a real mining area;
(2) converting the contour topographic map of the determined range into a height map (namely a gray scale map, wherein different gray scale values represent different heights);
(3) and importing the altitude map into 3Dmax, and automatically identifying the position information of the altitude map by a terrain editor provided by the 3Dmax to generate the 3D terrain.
Like 3D mapping software such as Sketchup, also have similar automatic terrain generation tools by which 3D terrain can be automatically generated from height maps (grey-scale maps).
Step S2: selecting a certain geographic marking point in a real mining area as a coordinate origin, recording longitude and latitude coordinates of the point, and generally taking a lower left corner point of the mining area as the coordinate origin in specific application; and selecting a virtual mine area coordinate origin corresponding to the real mine area coordinate origin in the virtual mine area, inputting the virtual mine area into the Unity simulation environment, and setting the virtual mine area coordinate origin corresponding to the real mine area, so that the position coordinates of the virtual mine area are normalized, and the subsequent calculation of the position coordinates of the virtual mine area is facilitated.
Step S3: and another reference point is taken at the same position in the real mine area and the virtual mine area, the reference point and the coordinate origin are mutually independent, and the proportional relation between the longitude and latitude coordinates of the real mine area and the three-dimensional virtual space coordinates of the virtual mine area is obtained, so that the X-Z space coordinate projection transformation from the longitude and latitude coordinate information of the real mine area to the three-dimensional virtual space coordinates of the virtual mine area is realized.
The method specifically comprises the following steps:
step S31: another reference point is taken at the same position in the real mining area and the virtual mining area, the reference point and the origin of coordinates are mutually independent, and the longitude and latitude coordinates of the reference point in the real mining area and the three-dimensional virtual coordinates of the reference point in the virtual mining area are respectively recorded;
step S32: and solving the proportional relation between the longitude and latitude coordinates of the real mine area and the three-dimensional virtual space coordinates of the virtual mine area according to the corresponding relation between the coordinate origin of the real mine area and the virtual mine area and the space coordinates of the reference point, thereby realizing the X-Z space coordinate projection transformation from the longitude and latitude coordinate information of the real mine area to the three-dimensional virtual space coordinates of the virtual mine area, wherein the Y value of the three-dimensional virtual space coordinates is used for expressing the height information of the virtual mine area. The step S32 calculation process is as follows:
(1) selecting a coordinate origin Oo (0, y,0) of the three-dimensional virtual space coordinates, (wherein y is a height value, and an initial value may be an arbitrary value); recording longitude and latitude information J1 of the coordinate origin in the real mining area;
(2) in the X-Z plane space, selecting the coordinates (X1, Z1) of another point in the virtual mine area, and simultaneously recording the longitude and latitude information J2 of the point in the real world again, wherein the conversion ratio k of the longitude and latitude value to the virtual mine area coordinates is as follows: (J2_ X-J1_ X)/(X1-Oo _ X) or (J2_ Z-J1_ Z)/(Z1-Oo _ Z), wherein J1_ X, J1_ Z, J2_ X, J2_ Z respectively represent longitude information and latitude information in longitude and latitude information J1, J2, Oo _ X is 0, and Oo _ Z is 0; then, if the latitude and longitude information Jn of any real mining area is given, the x coordinate of the point in the virtual mining area is (Jn _ x/k), and the z coordinate is (Jn _ z/k).
Step S4: after the X-Z plane coordinates of the virtual mining area are determined, the Y value, namely the height value, of the three-dimensional virtual space coordinates of the longitude and latitude geographic position point virtual mining area is obtained in the Unity simulation environment according to a rigid body vertical falling method, and the method comprises the following steps:
(1) newly building a virtual sphere, adding rigid body attributes to the virtual sphere, and setting an X-Z coordinate of the virtual sphere as a coordinate position in a virtual mining area obtained through longitude and latitude conversion; setting the height Y value of the sphere as the maximum height value of the current virtual mining area;
(2) the ball body is allowed to make free falling body movement, and the rotation and the displacement of the ball body after falling to the ground are limited;
(3) detecting a dropping point of the sphere dropping into the virtual mining area, wherein the dropping point is a three-dimensional virtual mining area geographical point corresponding to the longitude and latitude coordinate point, and the height value y of the landing point is a height value corresponding to the longitude and latitude coordinate point; or by emitting rays to the position right below the sphere, the point position height of the virtual mining area hit by the rays is the height Y value of the point, and therefore three-dimensional space coordinate conversion of the real mining area and the virtual mining area is completed.
The invention adopts the unity simulation environment to realize the three-dimensional space coordinate conversion method, so as to realize the dynamic update of the virtual mining area data, and can inquire the height value of the coordinate point in the virtual mining area by inputting the longitude and latitude coordinates.
Based on the same inventive concept, another embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps in the method according to any of the above-mentioned embodiments of the present application.
Based on the same inventive concept, another embodiment of the present application provides a computing device. The computing device comprises a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method according to any of the above embodiments of the present application when executed.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, apparatus or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A three-dimensional space coordinate transformation method, comprising:
step S1: establishing a virtual mine area which is completely the same as the real mine area according to the two-dimensional map and the contour topographic map of the real mine area;
step S2: establishing a corresponding relation between a real mine area coordinate origin and a virtual mine area coordinate origin, and inputting the virtual mine area into a Unity simulation environment;
step S3: another reference point is taken at the same position in the real mine area and the virtual mine area, the reference point and the coordinate origin are mutually independent, and the proportional relation between the longitude and latitude coordinates of the real mine area and the three-dimensional virtual space coordinates of the virtual mine area is obtained, so that the X-Z space coordinate projection transformation from the longitude and latitude coordinate information of the real mine area to the three-dimensional virtual space coordinates of the virtual mine area is realized;
step S4: after the X-Z plane coordinates of the virtual mining area are determined, the Y value, namely the height value, of the three-dimensional virtual space coordinates of the longitude and latitude geographic position points in the virtual mining area is obtained in the Unity simulation environment.
2. The three-dimensional space coordinate transformation method according to claim 1, wherein step S1 specifically includes:
(1) selecting a map range in which a 3D terrain needs to be drawn according to a two-dimensional map and a contour topographic map of a real mining area;
(2) converting the contour topographic map of the determined range into a height map;
(3) and importing the height map into 3D mapping software, and automatically identifying the position information of the height map through a terrain editor of the 3D mapping software to generate a 3D terrain.
3. The three-dimensional space coordinate conversion method according to claim 1, wherein the 3D drawing software is one of 3Dmax and Sketchup.
4. The three-dimensional space coordinate transformation method according to claim 1, wherein step S2 specifically includes: selecting a certain geographic marking point in the real mining area as a coordinate origin, recording longitude and latitude coordinates of the point, selecting a virtual mining area coordinate origin corresponding to the coordinate origin of the real mining area in the virtual mining area, and inputting the virtual mining area into a Unity simulation environment.
5. The three-dimensional space coordinate transformation method according to claim 4, wherein the lower left corner point of the mining area is selected as the origin of coordinates in step S2.
6. The three-dimensional space coordinate transformation method according to claim 1, wherein the step S3 specifically includes:
step S31: another reference point is taken at the same position in the real mining area and the virtual mining area, the reference point and the origin of coordinates are mutually independent, and the longitude and latitude coordinates of the reference point in the real mining area and the three-dimensional virtual coordinates of the reference point in the virtual mining area are respectively recorded;
step S32: and solving the proportional relation between the longitude and latitude coordinates of the real mine area and the three-dimensional virtual space coordinates of the virtual mine area according to the corresponding relation between the coordinate origin of the real mine area and the virtual mine area and the space coordinates of the reference point, thereby realizing the X-Z space coordinate projection transformation from the longitude and latitude coordinate information of the real mine area to the three-dimensional virtual space coordinates of the virtual mine area, wherein the Y value of the three-dimensional virtual space coordinates is used for expressing the height information of the virtual mine area.
7. The three-dimensional space coordinate transformation method according to claim 6, wherein the step S32 specifically includes:
(1) selecting a coordinate origin Oo (0, y,0) of a three-dimensional virtual space coordinate, and recording longitude and latitude information J1 of the coordinate origin in a real mining area, wherein y is an arbitrary value;
(2) in the X-Z plane space, selecting the coordinates (X1, Z1) of another point in the virtual mining area, and simultaneously recording the longitude and latitude information J2 of the point in the real world again, wherein the conversion ratio k of the longitude and latitude value to the virtual mining area is as follows: (J2_ X-J1_ X)/(X1-Oo _ X) or (J2_ Z-J1_ Z)/(Z1-Oo _ Z), wherein J1_ X, J1_ Z, J2_ X, J2_ Z respectively represent longitude information and latitude information in longitude and latitude information J1, J2, Oo _ X is 0, and Oo _ Z is 0; for longitude and latitude information Jn of any point in the real mining area, the x coordinate of the point in the virtual mining area is (Jn _ x/k), and the z coordinate is (Jn _ z/k); wherein Jn _ x and Jn _ z respectively represent longitude information and latitude information in the longitude and latitude information Jn.
8. The three-dimensional space coordinate transformation method according to claim 1, wherein the step S4 specifically includes:
(1) newly building a virtual sphere, adding rigid body attributes to the virtual sphere, and setting an X-Z coordinate of the virtual sphere as a coordinate position in a virtual mining area obtained through longitude and latitude conversion; setting the y value of the sphere as the maximum height value of the current virtual mining area;
(2) the ball body is allowed to make free falling body movement, and the rotation and the displacement of the ball body after falling to the ground are limited;
(3) detecting a dropping point of a sphere dropping to a virtual mining area, wherein the dropping point is a three-dimensional virtual space coordinate point corresponding to the longitude and latitude coordinate point, and the y value of the dropping point is a height value corresponding to the longitude and latitude coordinate point; or by emitting rays right below the sphere, the point location height of the virtual mining area hit by the rays is the y value of the point, namely the height value.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the three-dimensional space coordinate conversion method according to any one of claims 1 to 8.
10. A computing device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing performs the steps of the method for three-dimensional spatial coordinate transformation according to any of claims 1-8.
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| CN114625795A (en) * | 2022-03-25 | 2022-06-14 | 北京商询科技有限公司 | Map data conversion method, device and equipment |
| CN114625795B (en) * | 2022-03-25 | 2024-05-03 | 北京商询科技有限公司 | Map data conversion method, device and equipment |
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