摘要
在分析了JPEG2000中的感兴趣区域编码算法的基础上,针对其不足提出了一种基于区域重要性的嵌入式零树小波编码方法。算法无须修改小波系数值而用域值控制感兴趣区的恢复质量,并基于此修改了零树编码中的幅值编码。为了使得符号流更适合游程编码修改了零树编码中的扫描顺序,获得了较好的实验结果。
Thorough analysis of the region of interest coding in JPEG2000, aiming at the detects, an improved embedding zerotree wavelet algorithm based on area significiance are proposed. This method uses threshold to control the reconstructed quality of the region of interest, and yet doesn＇t need change the wavelet coefficient. On the basis of this idea, magnitude coding in EZW is modified. To make symbol stream adapt to runlenth coding,it uses a different scanning order with EZW. The experimental results are appreciated.
出处
《现代电子技术》
2008年第17期165-167,170,共4页
Modern Electronics Technique
关键词
感兴趣区
零树编码
幅值编码
游程编码
interest
zero - tree code
amplitude coding
run - length coding
