摘要
基于小波变换的嵌入式零树小波编码是一个简单有效的影像编码算法,通过分析该算法特性,针对其零树构建过程中较长的时间消耗,改进其方法以缩短编码时间;并针对现行地理信息可视化平台影像显示过程的跳变现象,结合人眼视觉特性,设计了一种渐进网络传输方案。
Embedded zerotree wavelet coding is a simple and effective image coding algorithm based on wavelet transformation. After analyzing the characteristics of EZW algorithm and because of large amount of time consumption on zerotree building, an improved algorithm is described to shorten the coding time. In allusion to the abrupt appearance of images on the current geographic information visualization platforms, a progressive network transmission scheme combined with human visual characteristics is designed.
出处
《计算机工程与应用》
CSCD
2012年第20期6-10,共5页
Computer Engineering and Applications
基金
湖南省研究生科研创新项目(No.CX2010B025
No.CX2010B025)
关键词
小波变换
嵌入式零树小波(EZW)
影像压缩
渐进传输
wavelet transform
Embedded Zerotree Wavelet （EZW）
image compression
progressive transmission
