Neural Directional Encoding for Efficient and Accurate View-Dependent Appearance Modeling

no code implementations • 23 May 2024 • Liwen Wu, Sai Bi, Zexiang Xu, Fujun Luan, Kai Zhang, Iliyan Georgiev, Kalyan Sunkavalli, Ravi Ramamoorthi

In contrast to previous methods that use encoding functions with only angular input, we additionally cone-trace spatial features to obtain a spatially varying directional encoding, which addresses the challenging interreflection effects.

Novel View Synthesis

OpenIllumination: A Multi-Illumination Dataset for Inverse Rendering Evaluation on Real Objects

no code implementations • NeurIPS 2023 • Isabella Liu, Linghao Chen, Ziyang Fu, Liwen Wu, Haian Jin, Zhong Li, Chin Ming Ryan Wong, Yi Xu, Ravi Ramamoorthi, Zexiang Xu, Hao Su

We introduce OpenIllumination, a real-world dataset containing over 108K images of 64 objects with diverse materials, captured under 72 camera views and a large number of different illuminations.

Foreground Segmentation Inverse Rendering

Factorized Inverse Path Tracing for Efficient and Accurate Material-Lighting Estimation

1 code implementation • ICCV 2023 • Liwen Wu, Rui Zhu, Mustafa B. Yaldiz, Yinhao Zhu, Hong Cai, Janarbek Matai, Fatih Porikli, Tzu-Mao Li, Manmohan Chandraker, Ravi Ramamoorthi

Inverse path tracing has recently been applied to joint material and lighting estimation, given geometry and multi-view HDR observations of an indoor scene.

Inverse Rendering Lighting Estimation

DIVeR: Real-time and Accurate Neural Radiance Fields with Deterministic Integration for Volume Rendering

2 code implementations • CVPR 2022 • Liwen Wu, Jae Yong Lee, Anand Bhattad, YuXiong Wang, David Forsyth

DIVeR's representation is a voxel based field of features.