Decomposition equation of basis images with consideration of global illumination

Authors:
Xueying Qin;Rui Zhang;Lili Lin;Fan Zhong;Guanyu Xing;Qunsheng Peng
Affiliations:
School of Computer Science and Technology, Shandong University, P.R. China,Shandong Provincial Key Laboratory of Network Based Intelligent Computing, P.R. China;School of Computer Science and Technology, Shandong University, P.R. China;School of Computer Science and Technology, Shandong University, P.R. China;School of Computer Science and Technology, Shandong University, P.R. China;State Key Laboratory of CAD&CG, Zhejiang University, P.R. China;State Key Laboratory of CAD&CG, Zhejiang University, P.R. China
Venue:
CVM'12 Proceedings of the First international conference on Computational Visual Media
Year:
2012

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Abstract

In augmented reality, it is required to sense the changing of the light condition for achieving illumination consistency. In this paper, we build up the decomposition equation of basis images of static scenes for this purpose. It is proved that the basis images are invariants of the scene, which is the global illumination effects of a distributed light source with unit power, and it is unnecessary to assume that the reflectance of appearance of objects in scenes is ideal diffuse. Our method can also be applied in image understanding and compressing.