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An Efficient and Robust Ray-Box Intersection Algorithm
Amy Williams, Steve Barrus, R. Keith Morley, Peter S. Shirley
In Journal of Graphics Tools, 10(1), 2005.

Abstract: The computational bottleneck in a ray tracer using bounding volume hierarchies is often the ray intersection routine with axis-aligned bounding boxes. We describe a version of this routine that uses IEEE numerical properties to ensure that those tests are both robust and efficient. Sample source code is available online.

BibTeX format:

@article{Williams:2005:AEA,
  author = {Amy Williams and Steve Barrus and R. Keith Morley and Peter S. Shirley},
  title = {An Efficient and Robust Ray-Box Intersection Algorithm},
  journal = {Journal of Graphics Tools},
  volume = {10},
  number = {1},
  pages = {49--54},
  year = {2005},
}

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