改进SPIHT图像压缩算法在弹性成像中的应用  

The application of improved SPIHT algorithm in ultrasound elastography

作　　者：齐育彬[1] 陈光喜[1] 

机构地区：[1]桂林电子科技大学数学与计算科学学院,广西桂林541004

出　　处：《桂林电子科技大学学报》2011年第3期234-237,共4页Journal of Guilin University of Electronic Technology

基　　金：国家自然科学基金(10661005);广西教育厅科研基金(200807LX112)

摘　　要：为提高医学超声弹性成像中图像传输的效率,采用了改进的SPIHT算法对图像进行压缩并传输。改进的SPIHT算法对弹性仿体受压前后的图像进行分解,然后对其进行去直流操作、编码和传输,传输后进行逆操作恢复图像并用于弹性成像。实验结果表明改进的SPIHT很大程度上减少了弹性图像的冗余信息,提高了图像的传输速度并在一定程度上提高了恢复图像质PSNR值,同时使得弹性成像计算效率大幅提高,较之为原SPIHT算法有更好的应用前景。In order to improve the efficiency of transmission in ultrasound elastography,a imprvoed SPIHT algorithm was used in image compression and transmission.Firstly the phantom image was decomposed by the improved SPIHT algorithm,which was removed the DC components,decoded and transported.After transmission,the image rcovered by opposite operation was used in elasticity imaging.The experimental results showed that the improved algorithm could reduce information redundancy in elastic image,improve the efficiency of coding and transmission and increase the PSNR of the recover image.At the same time the computational efficiency of elasticity imaging was increased,compared with the original SPIHT algorithm,the improved algorithm has better prospects.

关 键 词：弹性成像 SPIHT 图像压缩 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]