"Backwards"Path Tracing - a podcast by Nelson Max
from 2011-10-28T07:00
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Lecture 15 discusses"backwards"path tracing from lights, the duality between flux propagating from lights and importance propagating from sensors as well as computing primary viewing rays from a camera with a lens (for depth of field effects).
Further episodes of Ray Tracing for Global Illumination
Further podcasts by Nelson Max
Website of Nelson Max