基于SPIHT的动态感兴趣区域编码算法  

Dynamic Region of Interest Compression Algorithm Based on SPIHT

作　　者：李霆[1] 王东进[2] 刘发林[2] 

机构地区：[1]华东电子工程研究所成像中心,合肥230031 [2]中国科技大学电子工程与信息科学系,合肥230027

出　　处：《数据采集与处理》2008年第3期294-299,共6页Journal of Data Acquisition and Processing

摘　　要：传统的静态ROI区域优先的图像压缩算法是由发送方确定感兴趣区域,传输一旦开始,感兴趣区域就无法更改。为了解决这一问题,本文在整数小波变换和SPIHT编码算法的基础上,结合Maxshift算法提出了一种动态感兴趣区域图像压缩算法。仿真实验表明,该算法可以在传输过程中实时改变感兴趣区域,具有很大的灵活性,在许多领域具有一定推广应用价值。The traditional static ROI （Regions of interest） compression algorithm cannot change ROI region after beginning transmission. To solve this problem, an image compression algorithm is presented to support DROI（Dynamic ROI） priority. Combined with maxshift method, the algorithm is based on integer wavelet transform and SPIHT codec algorithm. In refinement pass, after output the nth most significant bit of the coefficient, the （n＋l）th bit is set to 0 and the nth bit is set to 1. The experimental result shows that the algorithm can change ROI in data transmission Thus it can be applied in many fields.

关 键 词：整数小波 动态感兴趣区域 最大移位 图像压缩 

分 类 号：TN919.81[电子电信—通信与信息系统]