Neural Radiance Cache

Computer Graphics · Neural Representations · 2021 · neural-radiance-cache.yaml

Trains a small network online, during rendering, to predict outgoing radiance, so paths can terminate into a learned estimate after a couple of bounces instead of continuing.

• supersedescorrects · extends
• classifiesspecializes · part-of
• substitutes forapproximates · alternative-to
• depends onrequires · validates

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

This node

• extendsadds capability to Path Tracingterminates paths into a cache learned while rendering
• alternative-tois a competing approach to Irradiance Cachinga learned cache instead of an interpolated one
• requiresdoes not work without Stochastic Gradient Descentthe cache is trained online, while rendering

References

• Real-time Neural Radiance Caching for Path Tracing — Muller, Rousselle, Novak, Keller — 2021 · link