Adaptive Multi-View Path Tracing

Animated sequence

The following sequence is made of 100 frames. The sequence is a shot extracted from the Blender open movie Agent 327 made freely available by the Blender Institute. The standard method renders each frame independently. Our methods jointly renders all the frames, and shares paths between frames with overlapping exposure intervals. Our algorithm both reduces the variance and the perceived flickering.

Total time budget 4000 seconds (40 seconds / frame)

Total time budget 18000 seconds (6 minutes / frame)

Animated sequence

The following sequence shows 100 frames of a custom Cornell Box, with fast moving cubes and glossy materials. This sequence is complex to render since cameras may see tangent geometry while cubes are moving, which implies large variations of the Jacobian and temporal visibility changes. The flickering reduction is particularly visible on the ceiling.

Single shot

A single frame extracted from the barber shop sequence (4000 seconds).

The same comparison after 18000 seconds.