医学图像视觉无损压缩的研究

Study on Visual Lossless Compression for Medical Image

当前医学图像压缩主要采用无损压缩,但无损压缩的压缩比太低,因此人们不断地研究将有损压缩应用于医学图像。视觉无损压缩在信息存储上实际是有损压缩,但人类视觉系统并不能察觉出这种图像信息量的损失,因而不影响临床诊断。本文具体论述了应用JPEG有损压缩算法对图像进行视觉无损压缩的过程,采用VC++6.0编程,实现了较高的医学图像存储压缩比并且不影响临床诊断。

Nowdays the compression arithmetic for medical images is mainly loseless compression, but it compression ratio is too small, so many people are trying to put the loss compression into medical images. Visual lossless compression is loss compression in the store of information, but human vision can t feel the loss of information, so it cant affect the medical diagnosis. The article discusses the procedure of applying JPEG loss compression arithmetic to realize the visual lossless compression of medical images, we programme with VC ＋＋6.0 . It produces a high compression ratio and doesnt affect the clinic.