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.
Original language | English |
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Article number | 5229345 |
Pages (from-to) | 1915-1920 |
Number of pages | 6 |
Journal | IEEE Transactions on Circuits and Systems for Video Technology |
Volume | 19 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2009 Dec |
Bibliographical note
Funding Information:Manuscript received October 2, 2008; revised February 24, 2009 and May 27, 2009. First version published September 1, 2009; current version published December 1, 2009. This work was supported by the Seoul Future Contents Convergence Cluster, established by the Seoul R&BD Program. This paper was recommended by Associate Editor J. Cai.
Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
Keywords
- Mode decision
- Modeling
- Scalable video coding
ASJC Scopus subject areas
- Media Technology
- Electrical and Electronic Engineering