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Motion Estimation with Optical Flow-Based Adaptive Search Region
Kyoung-Kyoo KIM Seong-Won BAN Kuhn-Il LEE
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/06/01
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Papers Selected from 2000 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2000))
motion estimation, optical flow estimation, video coding,
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An optical flow-based motion estimation algorithm is proposed for video coding. The algorithm is based on the fact that true motion vectors have similar characteristics to optical flow vectors. The algorithm uses block matching motion estimation with an adaptive search region. The search region is computed from motion fields that are estimated based on the optical flow. The results obtained using test images show that the proposed algorithm can produce a significant improvement compared with previous optical flow algorithm and block matching algorithm.