Energy redistribution path tracing

@inproceedings{Cline2005EnergyRP,
  title={Energy redistribution path tracing},
  author={David Cline and Justin Talbot and Parris Egbert},
  booktitle={SIGGRAPH '05},
  year={2005}
}
We present Energy Redistribution (ER) sampling as an unbiased method to solve correlated integral problems. ER sampling is a hybrid algorithm that uses Metropolis sampling-like mutation strategies in a standard Monte Carlo integration setting, rather than resorting to an intermediate probability distribution step. In the context of global illumination, we present Energy Redistribution Path Tracing (ERPT). Beginning with an inital set of light samples taken from a path tracer, ERPT uses path… CONTINUE READING