Real-time dynamic drawing method for vegetation in three-dimensional virtual scene
A three-dimensional virtual, real-time dynamic technology, applied in image data processing, instruments, 3D modeling, etc., can solve the problems of layering that cannot reflect the diversity and distribution of vegetation, and the overall fidelity of the scene is not high.
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[0044] The concrete steps of the vegetation real-time dynamic drawing method of the three-dimensional virtual scene of the present invention are as follows:
[0045] Step 1: Form a vegetation distribution grayscale map according to the distribution of vegetation in the 3D virtual scene. The distribution of vegetation is marked in the form of layers, and a layer corresponds to a vegetation, such as figure 1 shown.
[0046] The specific method is:
[0047] Step 11: According to the size of the terrain, create a grayscale image with a gray scale of 256 levels and a resolution of W×H, where X is the length of the terrain, Y is the width of the terrain, and α is the marking accuracy, which means that the distribution of vegetation can be identified The smallest unit of , then satisfy the following formula:
[0048] W / H=X / Y
[0049] X / W=α
[0050] Each pixel value of the 256-level grayscale image is represented by an 8-bit byte, and each 1 bit in the byte corresponds to a veget...
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