Tuesday, September 21, 2010

Comparing naive path tracing to bi-directional path tracing

Naive Path Tracing with 64 samples per pixel

Naive Path Tracing with 64 samples per pixel


Bi-Directional Path Tracing with 32 samples per pixel

Bi-Directional Path Tracing with 32 samples per pixel



Here I am comparing the results of naive path tracing (top) with bi-directional path tracing (bottom). The later gives much better results at almost half the number of samples per pixel. Check the reflections on the spheres.

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