NDLI: Adaptive motion vector refinement for high performance transcoding

Content Provider	IEEE Xplore Digital Library
Author	Jeongnam Youn Ming-Ting Sun
Copyright Year	1998
Description	Author affiliation: Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA (Jeongnam Youn)
Abstract	In transcoding, simple reuse of the motion vectors extracted from the incoming bit-stream may introduce severe quality degradation in many applications. In this paper we first discuss the effect of quantization error on the motion vectors. We show that due to the quantization errors, the incoming motion vectors become non-optimal. To achieve the best quality possible, a new motion estimation should be performed in the transcoder. We proposed an adaptive motion vector refinement scheme with a highly reduced computational complexity in comparison to the full-scale motion estimation. We also discuss the case when some incoming frames are dropped for the frame-rate conversion. We propose a simple and fast motion vector interpolation method. We show that the proposed adaptive refinement scheme provides video quality almost as good as that can be achieved by performing a new full-scale motion estimation but requires much less computation.
Starting Page	596
Ending Page	600
File Size	516989
Page Count	5
File Format	PDF
ISBN	0818688211
DOI	10.1109/ICIP.1998.727334
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-10-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transcoding Motion estimation Quantization Degradation Computational complexity Interpolation
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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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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