一种适用于医学图像ROI编码的改进SPIHT算法  

An Improved SPIHT Algorithm for Region of Interest Coding of Medical Image

作　　者：徐向民[1] 邢晓芬[1] 刘伟[2] 全晓臣[1] 

机构地区：[1]华南理工大学电子与信息学院,广州510640 [2]中国科学技术大学电子科学技术学院,合肥230001

出　　处：《科学技术与工程》2005年第19期1326-1329,共4页Science Technology and Engineering

基　　金：广东省自然科学基金(31449)资助

摘　　要：提出一种适于医学图像感兴趣区域编码交错位平面提升法,实现了ROI和BG相对质量可调,且不需传输掩模信息。对提升后的位平面,提出了基于ROI掩模估计的改进SPIHT算法。实验结果表明,相比SPIHT算法,改进算法具有更高的编码效率。A new ROI coding technique for medical image is introduced. By implementing the interlace upshift of binary coefficients, the compression quality of ROI and BG becomes adjustable, which can be used for the coding of arbitrary shaped ROI. According to the characteristics of the bitplane after interlaced upshift, a more efficient embedded coding algorithm based on SPIHT is presented. Moreover, theoretical analysis and simulated experiments all indicate that the proposed method is better than classical SPIHT algorithm.

关 键 词：渐进传输 感兴趣区编码 SPIHT 

分 类 号：TN919.8[电子电信—通信与信息系统]