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A Statistical Approach for Fast Mode Decision in Scalable Video Coding

Authors
Park, Chun-SuDan, Byoung-KyuChoi, HaechulKo, Sung-Jea
Issue Date
12월-2009
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
Mode decision; modeling; scalable video coding
Citation
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, v.19, no.12, pp.1915 - 1920
Indexed
SCIE
SCOPUS
Journal Title
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY
Volume
19
Number
12
Start Page
1915
End Page
1920
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/118827
DOI
10.1109/TCSVT.2009.2031520
ISSN
1051-8215
Abstract
In scalable video coding (SVC), an exhaustive mode decision is performed to search for the best mode at each macroblock. Although this method achieves an optimal trade-off between rate and distortion, it introduces an extreme computational burden on the encoder. In this letter, we propose a fast mode decision algorithm that can reduce the computational load of the mode decision for SVC. We statistically derive the expectation of the rate-distortion cost (RDcost) increase caused by skipping each mode in the mode decision. In the proposed algorithm, the encoder performs the mode decision using a small number of modes that are determined based on the expected increase of the RDcost. Experimental results show that the proposed algorithm can reduce the computational complexity significantly with negligible video quality degradation and bitrate increment.
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