01236nas a2200133   4500008004100000020001400041245006800055210006600123260001200189300001400201490000700215520084000222856004001062       1998                        eng d  a0895-611100aA comparison of lossless compression methods for medical images0 acomparison of lossless compression methods for medical images  c1998///  a323 - 3390 v223 aIn this work, lossless grayscale image compression methods arecompared on a medical image database. The database contains 10 
different types of images with bit rates varying from 8 to 16 
bits per pixel. The total number of test images was about 3000, 
originating from 125 different patient studies. Methods used for 
compressing the images include seven methods designed for 
grayscale images and 18 ordinary general-purpose compression 
programs. Furthermore, four compressed image file formats were 
used. The results show that the compression ratios strongly 
depend on the type of the image. The best methods turned out to 
be TMW, CALIC and JPEG-LS. The analysis step in TMW is very 
time-consuming. CALIC gives high compression ratios in a 
reasonable time, whereas JPEG-LS is nearly as effective and very 
fast.
  uhttps://inf.u-szeged.hu/en/node/997