Wavelet-based Contourlet Packet Coding Using an EBCOT-like Algorithm

摘要：

In this paper, an image coding algorithm based on a rate-distortion optimized wavelet-based contourlet packets (WBCP) decomposition and on a blockpartitioning coding scheme which quantizes each subband separately is proposed. In this way, our algorithm naturally overcomes the difficulty in defining parent-child relationships for wavelet-based contourlet packets subbands, which exists in the zerotree based methods. The main merit of the proposed method is that the contourlet transform can provide optimally sparse representation of objects with singularities along c2 edges and the waveletbased contourlet packets (WBCP) can decompose the high frequency parts of the images which are not decomposed in discrete wavelet transform. The experimental results show that the proposed algorithm significantly outperforms SPIHT and JPEG2000 schemes and also surpasses recent WBCP based image coding algorithms, in terms of both PSNR and visual quality.

关键词： Wavelet-Based Contourlet Packet(WBCP) directional filter bank(DFB) EBCOT WBCP-BPO Image Coding

作者: Zhenghua Shu Guodong Liu Qing Xie Lvming Zeng Lixin Gan

作者单位: Key Lab of Optic-Electronic and Communication, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China

会议类型: 国际会议

会议名称: 2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)

会议地点: 上海

会议语种:英文

页码: 648-651

在线出版日期: 2011-10-15（万方平台首次上网日期，不代表论文的发表时间）