基于改进SPIHT的医学图像压缩  

Medical Image Compression Based On Improved SPIHT Algorithm

作　　者：张伟[1] 谢凯[1] 

机构地区：[1]长江大学电子信息学院

出　　处：《电子世界》2013年第1期52-53,共2页Electronics World

摘　　要：为了满足医学数据的存储和传输的需要,在SPIHT算法的基础上,提出了一种基于改进SPIHT的医学图像压缩算法,实现了对医学图像的编码。该算法在减少编码时间的同时,能够得到较高的压缩比,重建图像的峰值信噪比也有明显的提高。选取几幅医学图像进行有效性的验证,试验结果表明:此算法可以更好地保留图像的客观质量,提高了编解码的效率,获得了较好的压缩效果。In order to meet the needs of the storage and transmission of medical data, On the basis of the SPIHT algorithm, medical data compression algorithm based on improved SPIHT is put forward, it achieves the coding of medical images.The algorithm not only can reduce the coding time, but also can get higher compression ratio and higher PSNR of the reconstructed image.We select pieces of medical images to verify the validity of the algorithm.Experimental results show that the algorithm can better retain the objective image quality, at the same time, it can improve the efficiency of the codec and we can get better compression.

关 键 词：医学图像压缩 改进SPIHT算法 小波变换 峰值信噪比 

分 类 号：TN919.81[电子电信—通信与信息系统]