This paper enhances the voxel-to-voxel radiance shooting, propagation, and scattering algorithm of Max [20]. It reduces the memory requirements by storing the radiance only on the occupied cells of a sparse voxel octree and by sampling only 24 propagation direction bins instead of 96 or more. It gives a modification of the propagation algorithm to compensate for the larger solid angle of the direction bins and allows for position-dependent fully anisotropic scattering. For a volume of \(n^3\) voxels, the computation time is \(O(n^3(\mathrm {log}\,n)^{3/2})\).

中文翻译：

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稀疏体素八叉树的整体照明

本文增强了Max [20]的体素到体素辐射的拍摄，传播和散射算法。通过仅在稀疏体素八叉树的被占用单元上存储辐射并通过仅采样24个传播方向容器（而不是96个或更多）来降低内存需求。它对传播算法进行了修改，以补偿方向箱的较大立体角，并允许位置相关的完全各向异性散射。对于体积为\（n ^ 3 \）的体素，计算时间为\（O（n ^ 3（\ mathrm {log} \，n）^ {3/2}）\）。