An Efficient and Scalable Image Codec Based on Binary Set Partitioning  

作　　者：CHENJunhua ZHANGWenjun ZHANGZhenghua 

机构地区：[1]InstituteofImageCommunication＆InformationProcessing,ShanghaiJiaotongUniversity,Shanghai200030,China

出　　处：《Chinese Journal of Electronics》2005年第1期122-124,共3页电子学报（英文版）

摘　　要：An image codec based on binary set partitioning is presented, where the discrete wavelet transformed coefficients are represented by zeroblocks instead of the conventional zerotrees. Binary trees are built before coding whose nodes are associated with blocks (sets) of coefficients from individual subbands. The significant blocksare partitioned in a binary tree splitting way to locate significant coefficients. Even without utilizing arithmetic coding which is time-consuming and sensitive to errors, the scheme achieves high coding efficiency due to the effective set partitioning algorithm. All subbands are coded independently in bitplanes, resulting in spatial and rate scalability. With the assistance of the list facility, the algorithm can be implemented very fast. Experimental results show that the proposed scheme outperforms the SPIHT in binary mode and gets similar coding efficiency to the SPIHT utilizing arithmetic coding, especially in very low bitrate.

关 键 词：图像编码 二进制树形网络 嵌入式编码 小波变换 

分 类 号：TN919.81[电子电信—通信与信息系统]