Delta Tracking

Computer Graphics · Participating Media · also: Woodcock tracking · delta-tracking.yaml

Fills a heterogeneous medium with fictitious matter up to a uniform majorant so distances can be sampled analytically, then randomly rejects the fictitious collisions. Unbiased with no need to invert the optical depth.

Colour is the family; a dashed line is the second member of it.

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G delta-tracking Delta Tracking volumetric-path-tracing Volumetric Path Tracing delta-tracking->volumetric-path-tracing heterogeneous media have no closed-form transmittance ratio-tracking Ratio Tracking ratio-tracking->delta-tracking the binary accept/reject outcome is high variance

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