Figure 4

Figure 4

Metacarpal phalangeal joint; index finger of hand shown in Figure 1.

Progressive compression using wavelet transform. Images are unscaled and unenhanced. Image degradation is evident at a relatively modest 12:1 compression ratio.

   

   
   
A:  Original image, losslessly compressed.     
   
   
B:  Q = 100, compression ratio =  7:1.
   
   
C:  Q =  99, compression ratio = 12:1.
   
   
D:  Q =  98, compression ratio = 18:1.
   
   

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