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Kehan Xu I am a third-year computer science PhD student at Dartmouth College, advised by Prof. Wojciech Jarosz. My research focuses on physically-based rendering, with an emphasis on efficient forward and inverse light transport simulation in participating media and stochastic geometry. I had the privilege to intern at NVIDIA Real-Time Graphics Research (2025), mentored by Benedikt Bitterli, and with the RenderMan team at Pixar Animation Studios (2026), mentored by Julian Fong. I completed my master's degree in computer science at ETH Zurich, where I was fortunate to work with Sebastian Herholz, Marco Manzi and Marios Papas. I hold a bachelor's degree in computer science from Peking University. |
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Publications |
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Practical Gaussian Process Implicit Surfaces with Sparse Convolutions
Kehan Xu, Benedikt Bitterli, Eugene d'Eon, Wojciech Jarosz ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2025) Project page / Paper Our approach makes Gaussian process implicit surfaces practical by reformulating Gaussian processes as procedural noise and supporting next-event estimation, resulting in a much simpler implementation and substantial rendering speedup. |
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Volume Scattering Probability Guiding
Kehan Xu, Sebastian Herholz, Marco Manzi, Marios Papas, Markus Gross ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2024) Project page / Paper Our unbiased algorithm automatically approximates the optimal volume scattering probability for efficient volume rendering based on learned noise characteristics between volume and surface contributions. |
MiscellaneousIf I'm not glued to my chair debugging pixels, you can find me drawing, visiting aquariums, or watching musicals. |
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