Defocus Video Matting
Hughes, John F.
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CitationMcGuire, Morgan, Wojciech Matusik, Hanspeter Pfister, John F. Hughes, and Frédo Durand. 2005. Defocus video matting. In Proceedings International Conference on Computer Graphics and Interactive Techniques, ACM SIGGRAPH 2005 Papers: July 31 - August 04, 2005, Los Angeles, California, 567-576. New York, N.Y.: ACM Press. Also published in ACM Transactions on Graphics 24(3): 567-576. 5ACM SIGGRAPH 2005 Papers: 567-576.
AbstractVideo matting is the process of pulling a high-quality alpha matte and foreground from a video sequence. Current techniques require either a known background (e.g., a blue screen) or extensive user interaction (e.g., to specify known foreground and background elements). The matting problem is generally under-constrained, since not enough information has been collected at capture time. We propose a novel, fully autonomous method for pulling a matte using multiple synchronized video streams that share a point of view but differ in their plane of focus. The solution is obtained by directly minimizing the error in filter-based image formation equations, which are over-constrained by our rich data stream. Our system solves the fully dynamic video matting problem without user assistance: both the foreground and background may be high frequency and have dynamic content, the foreground may resemble the background, and the scene is lit by natural (as opposed to polarized or collimated) illumination.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:4101995
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