An Approximate Shading Model with Detail Decomposition for Object Relighting
International Journal of Computer Vision(2018)
摘要
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.
更多查看译文
关键词
Image-based modeling,Shading model,Object insertion,Image relighting
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络