Zexiang Xu (徐泽祥)
I am currently a fifth-year Ph.D. student in computer science at University of California, San Diego. My advisor is Prof. Ravi Ramamoorthi. I received my Bachelor degree in 2012 and my Master degree in 2015 both from Beihang University.
My research interests lie at the intersection of computer graphics and computer vision; my focus is to make scene acquisition and rendering be efficient, practical and realistic. My research has been recognized by Powell Bundle Fellowship 2015 and Adobe Research Fellowship 2019. My work has covered rendering, relighting, view synthesis, appearance modeling, appearance acquisition, 3D reconstruction, hair modeling, and light fields.
Publication
Learning Generative Models for Rendering Specular Microgeometry
Alexandr Kuznetsov, Miloš Hašan, Zexiang Xu, Lingqi Yan, Bruce Walter, Nima Khademi Kalantari, Steve Marschner, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2019)
Deep View Synthesis from Sparse Photometric Images
Zexiang Xu, Sai Bi, Kalyan Sunkavalli, Sunil Hadap, Hao Su, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2019)
[ Paper] [Video] [ Supplementary]
Single Image Portrait Relighting
Tiancheng Sun, Jonathan T. Barron, Yun-Ta Tsai, Zexiang Xu, Xueming Yu, Graham Fyffe, Christoph Rhemann, Jay Busch, Paul Debevec, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2019)
[Paper] [Video] [Supplementary]
Learning to Reconstruct Shape and Spatially-Varying Reflectance from a Single Image
Zhengqin Li, Zexiang Xu, Ravi Ramamoorthi, Kalyan Sunkavalli, Manmohan Chandraker
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2018)
[Paper] [Video] [Supplementary]
Deep Image-based Relighting from Optimal Sparse Samples
Zexiang Xu, Kalyan Sunkavalli, Sunil Hadap, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2018)
[Paper] [Video] [Supplementary] [Project]
Robust Energy Minimization for BRDF-Invariant Shape from Light Fields
Zhengqin Li, Zexiang Xu, Ravi Ramamoorthi, Manmohan Chandraker
CVPR 2017
[Paper] [Supplementary]
Minimal BRDF Sampling for Two-Shot Near-Field Reflectance Acquisition
Zexiang Xu, Jannik Boll Nielsen, Jiyang Yu, Henrik Wann Jensen, Ravi Ramamoorthi
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2016)
[Paper] [Video] [Supplementary]
Sparse Sampling for Image-Based SVBRDF Acquisition
Jiyang Yu, Zexiang Xu, Matteo Mannino, Henrik Wann Jensen, Ravi Ramamoorthi
Workshop on Material Appearance Modeling (2016)
[Paper]
Dynamic Hair Capture using Spacetime Optimization
Zexiang Xu, Hsiang-Tao Wu, Lvdi Wang, Changxi Zheng, Xin Tong, Yue Qi
ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia 2014)