Copyright 2004 Ken Greenebaum
Error classification
nI(c,r)   Original image
nI'(c,r)  An approximation
n(has been compressed and decompressed)
n0  ≤ c <  M
n0  ≤ r <  N 
n
nThe error between the images at a pixel is
ne(c,r) = I'(c,r) - I(c,r)