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A fast mode decision algorithm with macroblock-adaptive rate-distortion estimation for intra-only scalable video coding

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3 Author(s)
Hung-Chih Lin ; Dept. of Electron. Eng., Nat. Chiao-Tung Univ., Hsinchu ; Wen-Hsiao Peng ; Hsueh-Ming Hang

In this paper, we propose a fast mode decision algorithm with macroblock-adaptive rate-distortion (R-D) estimation for intra-only scalable video coding (SVC). We make use of the log-linear R-D relationship of inter-dependent layers to predict the better performer among the Intra4times4 and Intra8times8 prediction types at the enhancement layers. Based upon the base-layer chosen prediction type, we can further reduce the number of candidate modes. In addition, to ensure the best trade-off between complexity and coding efficiency, the Intra16times16 prediction is retained and enabled only for coding high-resolution videos with smooth image contents. Comparing to the joint scalable video model v.8 (JSVM 8), an encoder time saving from 49% to 64% depending on the encoder configurations, is achieved with negligible penalty in coding efficiency.

Published in:

Multimedia and Expo, 2008 IEEE International Conference on

Date of Conference:

June 23 2008-April 26 2008