Combine several sampling strategies by weighting each sample according to the probability every strategy would have had of generating it. The balance heuristic makes the combination provably near-optimal.
supersedescorrects · extends
classifiesspecializes · part-of
substitutes forapproximates · alternative-to
depends onrequires · validates
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correctsfixes a defect in Next Event Estimationlight sampling alone is terrible on near-specular surfaces
Referenced by
requiresBidirectional Path Tracing does not work without thisthe same path is built many ways and must be weighted
requiresVertex Connection and Merging does not work without thisconnection and merging must be weighted against each other
References
Optimally Combining Sampling Techniques for Monte Carlo Rendering — Veach, Guibas — 1995 · link