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基于人类视觉特性的医学图象压缩模型

DOI: 10.11834/jig.2003010415

Keywords: 医学图象,图象压缩,小波变换,人类视觉系统,临床诊断

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Abstract:

结合人类视觉生理结构,以对比度感知特性作为人类视觉系统(HVS)中的主要研究议题,讨论了HVS模型中的设计要点,并在小波变换的多分辨率分析的基础上将包含CSF特点的HVS应用在图象的内部去相关变换和量化过程中,得到一个新的基于人类视觉特点的医学图象压缩模型.通过对CT、MRI图象进行实验表明,在相同的客观条件控制下,该方法能够取得较好的主观视觉质量.在视觉无损即保留几乎所有医学相关信息的条件下,压缩率可以达到16:1,一些应用场合可以达到80:1。

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