Technical Discussions related to Image Processing (image coding, compression, digital effects, mpeg, etc)
You know comparing images is highly subjective task, and Corr2, SNR, RMS .. and more .. but all this techniques have their own deficiency and there are some litratures on a robust techniques. try this paper and find more in its reference section. http://www.cs.uwa.edu.au/~gian/docs/hons_paper.pdf good luck, Samuel Assegie, Grad student, ECE______________________________