Spectrally optimal sampling for distribution ray tracing

  title={Spectrally optimal sampling for distribution ray tracing},
  author={D. Mitchell},
  booktitle={SIGGRAPH '91},
  • D. Mitchell
  • Published in SIGGRAPH '91 1991
  • Computer Science
  • 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… CONTINUE READING
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