LCS Publication Details
Publication Title: Video Matching
Publication Author: Sand, Peter
Additional Authors: Seth Teller
LCS Document Number: MIT-LCS-TR-947
Publication Date: 5-11-2004
LCS Group: Computer Graphics
Additional URL:
This paper describes a method for bringing two videos (recorded at different times) into spatiotemporal alignment, then comparing and combining corresponding pixels for applications such as background subtraction, compositing, and increasing dynamic range. We align a pair of videos by searching for frames that best match according to a robust image registration process. This process uses locally weighted regression to interpolate and extrapolate high-likelihood image correspondences, allowing new correspondences to be discovered and refined. Image regions that cannot be matched are detected and ignored, providing robustness to changes in scene content and lighting, which allows a variety of new applications.
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