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

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

N. Joshi, Matusik W, Avidan S, H. Pfister, and Freeman W.

(IEEE Computer Graphics & Applications, Special Issue on Computational Photography, 2007.)

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 doesntextquoterightt share the same center of projection as the low-resolution cameras used to capture the defocus matting data. In this article, we address these limitations and extend defocus matting in several important ways