NDLI: A fast three-step search algorithm with minimum checking points using unimodal error surface assumption

Content Provider	IEEE Xplore Digital Library
Author	Jong-Nam Kim Tae-Sun Choi
Copyright Year	1975
Abstract	Fast motion estimation algorithms for compression of moving pictures are widely required for real-time video encoding instead of the full search (FS) block matching algorithm. It provides optimal error performance but requires enormous computation for calculating the motion vector. In many fast algorithms, the three-step search (TSS) has been used for real time video encoding and low bit-rate video communications because of the reduced computations, simplicity and reasonable performance. Other modified algorithms of the TSS have been studied for the speed of computation and the error performance for motion estimation. This paper proposes a new algorithm (fast three-step search) for further reduction in computational complexity using a unimodal error surface assumption (UESA) without serious degradation of the error performance. We show that the computational complexity is further reduced with additional subsampling of the matching block. It is also shown that the proposed algorithm (FTSS) is computationally efficient while keeping the same performance as that of the TSS.
Sponsorship	IEEE Consumer Electronics Society
Starting Page	638
Ending Page	648
Page Count	11
File Size	966234
File Format	PDF
ISSN	00983063
Volume Number	44
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-08-01
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 Computational complexity Video compression Encoding Mechatronics Electronic mail Degradation Video coding Spatial resolution
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Media Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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