Exploring Defocus Matting: Nonparametric Acceleration, Super-Resolution, and Off-Center Matting

Authors:
Neel Joshi;Wojciech Matusik;Shai Avidan;Hanspeter Pfister;William T. Freeman
Affiliations:
University of California, San Diego;-;Mitsubishi Electric Research Labs;Mitsubishi Electric Research Labs;Massachusetts Institute of Technology
Venue:
IEEE Computer Graphics and Applications
Year:
2007

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Abstract

Defocus matting is a fully automatic and passive method for pulling mattes from video captured with coaxial cameras that have different depths of field and planes of focus. Nonparametric sampling can accelerate the video-matting process from minutes to seconds per frame. In addition, a super-resolution technique efficiently bridges the gap between mattes from high-resolution video cameras and those from low-resolution cameras. Off-center matting pulls mattes for an external high-resolution camera that doesn't share the same center of projection as the low-resolution cameras used to capture the defocus matting data.