PACS中的三维小波图象压缩

Image Compression in PACSBased on 3DWavelet Transform

满足医学影象临床诊断需要的无失真压缩编码技术的研究是图象压缩研究的新领域，也是ＰＡＣＳ系统和远程医疗诊断系统研究的热点之一。该文提出将三维小波压缩技术应用于ＣＴ、ＭＲＩ等所产生的多帧断层图象，把二维医学序列图象组视为三维图象进行了研究，并提出了一套完整的、切实可行的三维小波压缩方案。通过实验证明，三维小波压缩技术大大优于目前ＰＡＣＳ中最常用的二维ＪＰＥＧ编码和二维小波压缩技术。

Research on non noise coding m ethod serving the needs ofm edicaldiagnosis is a new field in PACS,CT and MRI scanners provided lotsof3D im ages every day. In this paper, a three dim ensionalm edicalim ages com pression m ethod based on 3D w avelettransform is proposed.The 2Dm edicalim age group isregarded as 3D im age. The authors expatiate on several questions w hich m ust be paid attention to in 3D w avelet transform , and an integrity 3Dw avelettransform coding m ethod is proposed.Theexperim entalresultshows this3Dcoding m ethod can offsetthe failure of2Dcoding m ethod in PACSperfectly.