Improved Stochastic Progressive Photon Mapping with Metropolis Sampling

  title={Improved Stochastic Progressive Photon Mapping with Metropolis Sampling},
  author={Jiating Chen and Bin Wang and Jun-Hai Yong},
  journal={Comput. Graph. Forum},
This paper presents an improvement to the stochastic progressive photon mapping (SPPM), a method for robustly simulating complex global illumination with distributed ray tracing effects. Normally, similar to photon mapping and other particle tracing algorithms, SPPM would become inefficient when the photons are poorly distributed. An inordinate amount of photons are required to reduce the error caused by noise and bias to acceptable levels. In order to optimize the distribution of photons, we… CONTINUE READING


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