Voxel Occlusion Testing : A Shadow Determination Accelerator for Ray Tracing

@inproceedings{Woo2003VoxelOT,
  title={Voxel Occlusion Testing : A Shadow Determination Accelerator for Ray Tracing},
  author={Andrew Woo and John Amanatides},
  year={2003}
}
A shadow determination accelerator for ray tracing is presented. It is built on top of the uniform voxel traversal grid sfucture. The accelerator proves to be rather efficient' requires little additionai memory and the worst case scenarlo per shadow determination just reduces down to traditional voxel traversal. It can also be extended to model linear, area lights, as well as atrnospheric shadows.