CS224 Final Project — Render Denoising

Loudon Cohen & Raphael Kargon

Link to Github repo (note: use branch temporal-history)

Features

• Separation of albedo, direct lighting, and indirect lighting channels
• Spatial wavelet filtering -- taking into account normals, color edges, and depth/world-position differences
• Temporal accumulation -- Accumulation of color from previous frames, and variance estimation (to improve edge blurring).
• Motion vectors -- reprojection to match up points across frames, even w/ movement.
• Fast approximate anti-aliasing

Results

Known Issues

• Reflections and refractions can be blurry (esp. on flat surfaces)
• Temporal history works, but "history length" parameter seems stuck at one, making it difficult to add improvements to areas w/ no history (e.g. spatial variance estimation)

Usage

 mkdir build && cd build
 qmake -makefile ../final.pro
 make release
 ./release/final <scene xml>
./release/final -h (for more options)