Back to Search Start Over

GMLight: Lighting Estimation via Geometric Distribution Approximation.

Authors :
Zhan, Fangneng
Yu, Yingchen
Zhang, Changgong
Wu, Rongliang
Hu, Wenbo
Lu, Shijian
Ma, Feiying
Xie, Xuansong
Shao, Ling
Source :
IEEE Transactions on Image Processing. 2022, Vol. 31, p2268-2278. 11p.
Publication Year :
2022

Abstract

Inferring the scene illumination from a single image is an essential yet challenging task in computer vision and computer graphics. Existing works estimate lighting by regressing representative illumination parameters or generating illumination maps directly. However, these methods often suffer from poor accuracy and generalization. This paper presents Geometric Mover’s Light (GMLight), a lighting estimation framework that employs a regression network and a generative projector for effective illumination estimation. We parameterize illumination scenes in terms of the geometric light distribution, light intensity, ambient term, and auxiliary depth, which can be estimated by a regression network. Inspired by the earth mover’s distance, we design a novel geometric mover’s loss to guide the accurate regression of light distribution parameters. With the estimated light parameters, the generative projector synthesizes panoramic illumination maps with realistic appearance and high-frequency details. Extensive experiments show that GMLight achieves accurate illumination estimation and superior fidelity in relighting for 3D object insertion. The codes are available at https://github.com/fnzhan/Illumination-Estimation [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10577149
Volume :
31
Database :
Academic Search Index
Journal :
IEEE Transactions on Image Processing
Publication Type :
Academic Journal
Accession number :
170077150
Full Text :
https://doi.org/10.1109/TIP.2022.3151997