標題: | Context-based binary arithmetic coding for fine granuality scalability |
作者: | Peng, WH Chiang, TH Hang, HM 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
公開日期: | 2003 |
摘要: | We proposed a context-based binary arithmetic coding to improve entropy coding of the enhancement layer for the H.26L-, based Fine Granularity Scalability (FGS). Instead of independent bit-plane coding, we exploit correlation between various bit-planes and neighboring coefficients. For each bit-plane, we perform significant/refinement bit partition and construct contexts separately in terms of energy clustering and distribution of DCT coefficients. For the significant bit, we extend one-dimensional run-length coding to multiple dimensions and segment the significant bit-planes. For the refinement bit, we put together refinement bits exhibiting stronger correlation by energy groups and apply run-length coding distinctively. Particularly, we introduce the maximum run concept to offer better statistical adaptation. Averagely, our approach reduces the enhancement-layer bit stream by 7similar to8% and improves the PSNR by 0.3similar to0.5dB. Moreover, our performance outperforms the JPEG-2000 for the encoding of the enhancement layer. |
URI: | http://hdl.handle.net/11536/18657 |
ISBN: | 0-7803-7946-2 |
期刊: | SEVENTH INTERNATIONAL SYMPOSIUM ON SIGNAL PROCESSING AND ITS APPLICATIONS, VOL 1, PROCEEDINGS |
起始頁: | 105 |
結束頁: | 108 |
顯示於類別: | 會議論文 |