Fast separation of direct and global components of a scene using high frequency illumination
ACM SIGGRAPH 2006 Papers
Realistic materials in computer graphics
SIGGRAPH '05 ACM SIGGRAPH 2005 Courses
VirtualStudio2Go: digital video composition for real environments
ACM SIGGRAPH Asia 2008 papers
Vector field fitting for real-time environment matting of transparent objects
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Environment matting of transparent objects based on frequency-domain analysis
PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part I
Inferring reflectance functions from wavelet noise
EGSR'05 Proceedings of the Sixteenth Eurographics conference on Rendering Techniques
Practical SVBRDF capture in the frequency domain
ACM Transactions on Graphics (TOG) - SIGGRAPH 2013 Conference Proceedings
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Environment matting is a technique to extract the environment matte which is used to describe how an object reflects and refracts the environment light. In this paper, we propose a novel environment matting method to obtain the environment matte of a real scene. Previous methods use different backdrops as the calibration patterns and search for the environment matte in the spatial domain. In our method, however, a series of background images displayed on a screen sequentially in time are interpreted as signals. The frequency similarity of these signals is used as the searching criterion. The frequencies of these signals are not changed when they interact with the foreground objects and thus can be used to extract the environment matte. While using correspondence in the spatial domain in existing approaches is prone to error, using frequency correspondence is not. Thus, our approach is robust to noise and can easily deal with some of the complex light transport phenomena which cannot be easily handled using current methods. The experimental results are very encouraging.