Progressive Radiance Evaluation Using Directional Coherence Maps

@inproceedings{Guo1998ProgressiveRE,
  title={Progressive Radiance Evaluation Using Directional Coherence Maps},
  author={Baining Guo},
  booktitle={SIGGRAPH},
  year={1998}
}
We develop a progressive refinement algorithm that generates an approximate image quickly, then gradually refines it towards the final result. Our algorithm can reconstruct a high-quality image after evaluating only a small percentage of the pixels. For a typical scene, evaluating only 6% of the pixels yields an approximate image that is visually hard to distinguish from an image with all the pixels evaluated. At this low sampling rate, previous techniques such as adaptive stochastic sampling… CONTINUE READING
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