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- Title
An Approximate Shading Model with Detail Decomposition for Object Relighting.
- Authors
Zhang, Hongyi; Liao, Zicheng; Karsch, Kevin; Forsyth, David
- Abstract
We present an object relighting system that allows an artist to select an object from an image and insert it into a target scene. Through simple interactions, the system can adjust illumination on the inserted object so that it appears naturally in the scene. To support image-based relighting, we build object model from the image, and propose a perceptually-inspired approximate shading model for the relighting. It decomposes the shading field into (a) a rough shape term that can be reshaded, (b) a parametric shading detail that encodes missing features from the first term, and (c) a geometric detail term that captures fine-scale material properties. With this decomposition, the shading model combines 3D rendering and image-based composition and allows more flexible compositing than image-based methods. Quantitative evaluation and a set of user studies suggest our method is a promising alternative to existing methods of object insertion.
- Subjects
IMAGE; EXAMPLE; OBJECT (Philosophy); EVALUATION; RESEARCH
- Publication
International Journal of Computer Vision, 2019, Vol 127, Issue 1, p22
- ISSN
0920-5691
- Publication type
Article
- DOI
10.1007/s11263-018-1090-6