Abstract
Reconstructing virtual scene properties from images can experience rendering noise and elevated computational demands, particularly under unknown illumination conditions. A method for estimating scene properties may use radiance caching combined with differentiable path tracing. To process image data, a spatial blending field may locally interpolate between a cache estimator and a material estimator during light path simulation. The cache estimator can query a multi-resolution hash grid to determine outgoing radiance, while the material estimator can simulate material reflectance behavior. By spatially adapting a reliance on the cache estimator versus the material estimator, the method can decouple unknown lighting variables from physical material properties. The disclosed technique may reduce variance and computational overhead, allowing for material reconstruction in environments having unknown light sources.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Vicini, Delio Aleardo; Winberg, Sebastian Valentin; Garbin, Stephan Joachim; and Zhang, Ziyi, "Estimating 3D Scene Properties Using Cached Light Simulations", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/11211