Better flow estimation from color images

TitleBetter flow estimation from color images
Publication TypeJournal Articles
Year of Publication2007
AuthorsJi H, Fermüller C
JournalEURASIP Journal on Advances in Signal Processing
Pagination133 - 133
Date Published2007/01//
ISBN Number1110-8657

One of the difficulties in estimating optical flow is bias. Correcting the bias using the classical techniques is very difficult. The reason is that knowledge of the error statistics is required, which usually cannot be obtained because of lack of data. In this paper, we present an approach which utilizes color information. Color images do not provide more geometric information than monochromatic images to the estimation of optic flow. They do, however, contain additional statistical information. By utilizing the technique of instrumental variables, bias from multiple noise sources can be robustly corrected without computing the parameters of the noise distribution. Experiments on synthesized and real data demonstrate the efficiency of the algorithm.