Novel method of embedded wavelet coding of region of interest for medical images
Wufan Chen · Jisuanji yingyong yanjiu · 2008
This paper proposed a novel medical image compression scheme,AR-EWC.The key advantages included the following four points: smooth transition between ROI and background without border distortion,the support of arbitrary shape ROI,embedded lossy to lossless progressive refining code stream and random access to any ROI.By using lossless compression on ROI containing clinical details and high ratio lossy compression on background,AR-EWC algorithm could achieve the goal of preserving critical clinical information of medical images as well as gains more compression ratio improvement than the traditional lossless scheme.The experiments on MR head images show the algorithm can get compression ratio comparable to classic lossy algorithms while preserving lossless information in ROI.