Spectrally optimal sampling for distribution ray tracing

@article{Mitchell1991SpectrallyOS,
  title={Spectrally optimal sampling for distribution ray tracing},
  author={Don P. Mitchell},
  journal={Proceedings of the 18th annual conference on Computer graphics and interactive techniques},
  year={1991}
}
  • D. P. Mitchell
  • Published 1 July 1991
  • Computer Science
  • Proceedings of the 18th annual conference on Computer graphics and interactive techniques
Nonuniform sampling of images is a useful technique in computer graphics, because a properly designed pattern of samples can make aliasing take the form of high-frequency random noise. In this paper, the technique of nonuniform sampling is extended from two dimensions to include the extra parameter dimensions of distribution ray tracing. A condition for optimality is suggested, and algorithms for approximating optimal sampling are developed. The technique is demonstrated at low sampling… Expand
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