Unified Points, Beams, and Paths

Image comparison for the Bathroom scene

Full transport reference solution (UPBP)

Full transport reference

Comparison of our UPBP algorithm against previous work

UPBP (Our algorithm)

Volumetric photon mapping (P-P)

Beam radiance estimate (P-Bl)

Photon beams (Bs-Bl)

Bidirectional path tracing (BPT)

Contributions of the different estimators to the UPBP result

Point-Point 3D

Point-Beam(long) 2D

Beam(short)-Beam(long) 1D

MC path integration

Point-Point 3D

Point-Beam(long) 2D

Beam(short)-Beam(long) 1D

MC path integration