標題: | Layer-adaptive mode decision and motion search for scalable video coding with combined coarse granular scalability (CGS) and temporal scalability |
作者: | Lin, Hung-Chih Peng, Wen-Hsiao Hang, Hsueh-Ming Ho, Wen-Jen 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
關鍵字: | scalable video coding;fast mode decision;encoder optimization |
公開日期: | 2007 |
摘要: | In this paper, we propose a layer-adaptive mode decision algorithm and a motion search scheme for the scalable video coding (SVC) with combined coarse granular scalability (CGS) and temporal scalability. To speed up the encoder while minimizing the loss in coding efficiency, our layer-adaptive mode decision recursively refers to the prediction modes and quantization parameter of the reference/base layer to minimize the number of modes tested at the enhancement layer. Moreover, our motion search scheme adaptively reuses the reference frame indices of the base layer and determines the initial search point using the motion vector at the base layer or the motion vector predictor at the enhancement layer. As compared with JSVM 8, the proposed algorithms provide up to 75% overall time saving and more than 85% time reduction for encoding enhancement layers with negligible loss in coding efficiency. |
URI: | http://hdl.handle.net/11536/7112 |
ISBN: | 978-1-4244-1436-9 |
ISSN: | 1522-4880 |
期刊: | 2007 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1-7 |
起始頁: | 853 |
結束頁: | 856 |
顯示於類別: | 會議論文 |