Three-dimensional modeling method and device for road
A technology of 3D modeling and 3D modeling, applied in 3D modeling, instruments, calculations, etc., can solve the problems of time-consuming and laborious, limited 2D image expression, and difficulty in meeting the needs of urban 3D spatial information, so as to improve modeling efficiency. Effect
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no. 1 example
[0028] This embodiment provides a technical solution of a three-dimensional modeling method for roads. The three-dimensional road modeling method provided in this embodiment can be executed by a road three-dimensional modeling device, which is integrated in a computing device.
[0029] see figure 1 , the three-dimensional modeling method of the road includes:
[0030] S11. Determine the three-dimensional curve shape of the road and the three-dimensional transformation matrix of key points on the three-dimensional curve.
[0031] In this embodiment, the three-dimensional curve may be the centerline, left boundary line or right boundary line of the modeled road. The key points are points located on the three-dimensional curve. Thus, the key point is a point on the centerline of the road, a point on the left boundary line of the road, or a point on the right boundary line of the road. Figure 2A , Figure 2B and Figure 2C The cases where the key point is at the center line...
no. 2 example
[0046] This embodiment is based on the above-mentioned embodiments of the present invention, and further provides a technical solution for the shape and matrix determination operation in the three-dimensional modeling method of the road. In this technical solution, determining the three-dimensional curve shape of the road and the three-dimensional transformation matrix of key points on the three-dimensional curve includes: determining the three-dimensional curve shape of the road according to two-dimensional map data plus street view elevation; determining the key points on the road point, wherein the key point is located on the three-dimensional curve; the three-dimensional transformation matrix is determined according to the original position of the key point on the two-dimensional image and the target position in three-dimensional space.
[0047] see image 3, determine the three-dimensional curve shape of the road, and the three-dimensional transformation matrix of key p...
no. 3 example
[0057] This embodiment is based on the above-mentioned embodiments of the present invention, and further provides a technical solution for the selection operation of the same section point in the three-dimensional modeling method of the road. In this technical solution, according to the preset cross-sectional shape, determining other points on the same cross-section as the key point includes: determining the position of each vertex on the cross-sectional shape; , to determine the positions of other points on the cross section except the vertex.
[0058] see Figure 5 , according to the preset cross-sectional shape, determine other points on the same cross-section as the key point include:
[0059] S51. Determine the position of each vertex on the cross-sectional shape.
[0060] In this embodiment, a polygon is used to approximate the cross section of the road. Polygons have multiple vertices. The vertices are points where the direction of the outer contour of the polygon c...
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