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Theorically ssim(a,b) = ssim(b,a)
In your case it looks like it isn't
About comparisons:
a is a video clip
b is a compressed version of a
c is another compressed version a
You could use ssim(a,b) and ssim(a,c) and compare these results but i don't think you could get any information from doing ssim(b,c).
[EDIT]
On all my tests, ssim was perfectly symmetrical, so i can't reproduce your result DDogg :/
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Some old avisynth filters
Last edited by Lefungus; 10th September 2003 at 22:03.
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