NDLI: Motion estimation in image sequences using the deformation of apparent contours

Content Provider	IEEE Xplore Digital Library
Author	Kahl, F. Astrom, K.
Copyright Year	1998
Description	Author affiliation: Dept. of Math., Lund Univ., Sweden (Kahl, F.)
Abstract	The problem of determining the camera motion from apparent contours or silhouettes of curved three-dimensional surfaces is considered. In a sequence of images is shown how to use the generalized epipolar constraint on apparent contours. One such constraint is obtained for each epipolar tangency point in each image pair. Thus in theory the motion can be calculated from the deformation of a single contour. A robust algorithm for computing the motion is presented based on the maximum likelihood estimate. It is shown how to generate initial estimates on the camera motion using only the tracked contours. It is also shown how to improve this estimate by maximizing the likelihood function. The algorithm has been tested on real image sequences. The result is compared to that of using only point features. The statistical evaluation shows that the technique gives accurate and stable results.
Starting Page	939
Ending Page	942
File Size	657399
Page Count	4
File Format	PDF
ISBN	8173192219
DOI	10.1109/ICCV.1998.710829
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-01-07
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Motion estimation Image sequences Cameras Maximum likelihood estimation Tracking Maximum likelihood detection Testing Information resources Navigation Motion detection
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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