Method and system for converting large-range live-action three-dimensional projection coordinate into spherical coordinate system
A three-dimensional projection and coordinate system technology, applied in the field of measurement, can solve problems such as failure to meet accuracy requirements and errors, and achieve the effect of reducing accuracy errors
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Embodiment 1
[0044] Such as figure 1 As shown, the large-scale real scene three-dimensional projected coordinates of the present embodiment converts the spherical coordinate system into a method, including the following:
[0045] Step S1, real-scene 3D data loading management and spatial dataset information acquisition. The specific content is as follows:
[0046] S11. Loading the 3D data adopts the BVH tree of the bounding volume level to realize the management of the scene graph;
[0047] S12. Acquiring model space dataset information.
[0048] Use the BVH tree to organize and manage the data spatially, and obtain the model space data set information mainly including the model reference origin in the projected coordinate system, the model vertex coordinates, and the center point coordinates of the model enclosure in the BVH tree structure. Obtain the model space dataset information DataSet, mainly including the model reference origin O in the Gaussian projection coordinate system (xy...
Embodiment 2
[0072] On the basis of the aforementioned conversion method, the system based on the conversion method will be described below. For details, please refer to the aforementioned example of the scheduling method.
[0073] Such as Figure 6 As shown, the large-scale real-scene three-dimensional projected coordinates of the present embodiment to the spherical coordinate system transformation system includes the following contents:
[0074] Loading management module: used for real-scene 3D data loading management and spatial dataset information acquisition; wherein, the model spatial dataset information DataSet includes the model reference origin O under the Gaussian projection coordinate system (xyz) , model vertex coordinates Vertex (xyz) and the center point coordinate information of the model bounding volume in the BVH tree structure;
[0075] Build the coordinate system module: used to refer to the origin O with the model (xyz) The coordinates in the geocentric Cartesian coo...
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