IMPROVED ZERO-TREE CODER RESEARCH BASED ON WAVELET COEFFICIENTS

摘要：

By analyzing the characteristics of degree zerotree, both the EZW wavelet coder and SPIHT wavelet coder have advantages and disadvantages. Combined with the characteristics of wavelet coefficients, a zerotree based on hybrid encoder program was found. With the wavelet zerotree definition, taking the pre-processing zerotree before the zerotree coding, the identification of suitable programs of zerotree encoder comes out. The simulation results show that comparing with the separate use of EZW or SPIHT encoder, the hybrid encoders encoding algorithm can effectively enhance the efficiency of code compression PSNR.

关键词： hybrid zerotree encoder Wavelet zerotree encoder pre-processing zero-treee

作者: Ying Jiang Xiaojun Jing

作者单位: Beijing Laboratory of Biometric and Multimedia Communication,Beijing University of Posts and Telecommunications, Beijing

会议类型: 国际会议

会议名称: 2009 IEEE International Conference on Network Infrastructure and Digital Content(2009年IEEE网络基础设施与数字内容国际会议 IEEE IC-NIDC2009)

会议地点: 北京

会议语种:英文

页码: 405-409

在线出版日期: 2009-11-06（万方平台首次上网日期，不代表论文的发表时间）