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
Appears in Collections:Conferences Paper