Path Guiding with Vertex Triplet Distributions
We guide the construction of light transport paths in difficult regions by reusing distributions of vertex triplets from previous paths.
Jul 30, 2022
Spectral Mollification for Bidirectional Fluorescence
In a fluorescent context, non-fluorescent surfaces are spectral singularities, just like mirrors are singularities in the geometric domain. We enable bidirectional connections between non-fluorescent surfaces in a fluorescent bidirectional path tracer with a spectral regularization approach.
Jul 13, 2020
Detecting Bias in Monte Carlo Renderers using Welch’s t-test
We use a statistical test, Welch's t test, to detect bias renderers. The text requires little memory and computational overhead and can detect even small bias at low sample counts.
Jun 13, 2020
Wide Gamut Spectral Upsampling with Fluorescence
Given an input RGB tristimulus value, our method automatically provides a mixture of a regular, smooth reflectance spectrum plus a fluorescent part. For highly saturated input colours, the combination yields an improved reconstruction compared to what would be possible relying on a reflectance spectrum alone.
Jul 30, 2019
Selective guided sampling with complete light transport paths
We propose a guiding method that constructs new light transport paths based on previous paths from difficult regions.
Dec 1, 2018
An example journal article
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Sep 1, 2015