Ziyi Zhang

Ziyi Zhang 张梓毅

I am a fourth year PhD student in the Realistic Graphics Lab at EPFL, advised by Prof. Wenzel Jakob.

I'm interested in physical light transport simulation and its differentiation. During my PhD, I have had the opportunity to work as an intern with NVIDIA and Google. Before that, I obtained my bachelor's degree from NYU where I had the privilege of working with Prof. Daniele Panozzo.

Email / Google Scholar / GitHub / Bluesky

Publications

	Radiance Caching for Differentiable Path Tracing Ziyi Zhang, Delio Vicini, Sebastian Winberg, Stephan Garbin, Wenzel Jakob ACM SIGGRAPH, 2026 project page / paper Robust inverse rendering with a radiance cache and learned blending field.
	Many-Worlds Inverse Rendering Ziyi Zhang, Nicolas Roussel, Wenzel Jakob ACM SIGGRAPH Asia, 2025 project page / talk / paper / code Simple and efficient geometry optimization by differentiating non-interacting superposition of conflicting possibilities ("worlds").
	Radiance Surfaces: Optimizing Surface Representations with a 5D Radiance Field Loss Ziyi Zhang, Nicolas Roussel, Thomas Müller, Tizian Zeltner, Merlin Nimier-David, Fabrice Rousselle, Wenzel Jakob ACM SIGGRAPH, 2025 project page / talk / paper / code Optimizing a distribution of surfaces without volume rendering.
	A Simple Approach to Differentiable Rendering of SDFs Zichen Wang, Xi Deng, Ziyi Zhang, Wenzel Jakob, Steve Marschner ACM SIGGRAPH Asia, 2024 project page / paper / code SDF differentiation made simple.
	Projective Sampling for Differentiable Rendering of Geometry Ziyi Zhang, Nicolas Roussel, Wenzel Jakob ACM SIGGRAPH Asia, 2023 project page / talk / paper / code Compute gradients of geometry in physically-based rendering -- from theory to a practical Monte Carlo algorithm.
	4D Force Detection of Cell Adhesion and Contractility Nafsika Chala, Xinyu Zhang, Tomaso Zambelli, Ziyi Zhang, Teseo Schneider, Daniele Panozzo, Dimos Poulikakos, Aldo Ferrari Nanoletters, 2023 paper / code Traction force microscopy in 3D.
	Rear traction forces drive adherent tissue migration in vivo Naoya Yamaguchi, Ziyi Zhang, Teseo Schneider, Biran Wang, Daniele Panozzo, Holger Knaut Nature Cell Biology, 2022 paper / code Optical tracking of bleached pattern for cellular traction force microscopy.
	Bijective and Coarse High-Order Tetrahedral Meshes Zhongshi Jiang, Ziyi Zhang, Yixin Hu, Teseo Schneider, Denis Zorin, Daniele Panozzo ACM SIGGRAPH, 2021 project page / paper / code Robust coarse curved tetmesh generation.