NDLI: Real-time video coding

Content Provider	IEEE Xplore Digital Library
Author	Tae-Sun Choi Jong-Nam Kim
Copyright Year	1975
Abstract	Many modified three-step search (TSS) algorithms have been studied for the speed up of computation and improved error performance over the original TSS algorithm. In this work, an efficient and fast TSS algorithm is proposed, which is based on the unimodal error search assumption (UESA), error surface properties, the matching error threshold and the partial sum of the matching error. For the search strategy, we propose a new and efficient search method, which shows a good performance in terms of the computational reduction and the prediction error compared with other search algorithms. Also, we add half-stop algorithms to the above algorithm with little degradation of the predicted image quality while obtaining more computational reduction. One of them is based on the assumption that if a small amount of motion compensation error is produced, we can consider the matching block as a matched block and the motion vector as a global one. The other removes the computational redundancy by stopping the useless calculation of the matching error in a matching block. With the added algorithms, we can reduce significantly the computation for the motion vector with a small degradation of the predicted image quality with a proper threshold. Experimentally, it is shown that the proposed algorithm is very efficient in terms of the speed up of the computation and error performance compared with other conventional modified TSS algorithms.
Sponsorship	IEEE Consumer Electronics Society
Starting Page	417
Ending Page	426
Page Count	10
File Size	826537
File Format	PDF
ISSN	00983063
Volume Number	45
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Motion estimation Video coding Degradation Software performance Software algorithms Image quality Mechatronics Spatial resolution Search methods Motion compensation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Media Technology

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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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