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Fastest Comparison Method?

Posted: 2015-10-08T19:37:39-07:00
by blue-j
I simply want to compare two images and know if they are visually different at all. (They will be the same size.)

I know of the AE compare metric, of IM image signatures... but what is the FASTEST method to do this?

Thanks for your consideration!

- J

Re: Fastest Comparison Method?

Posted: 2015-10-09T10:09:29-07:00
by fmw42
I believe that AE is the fastest compare metric.

Code: Select all

time compare -metric AE logo.png logox.png null:
0.108s

Code: Select all

time compare -metric PAE logo.png logox.png null:
0.113s

Code: Select all

time compare -metric rmse logo.png logox.png null:
0.113s

Code: Select all

time convert logo.png logox.png -compose difference -composite -format "%[fx:mean]" info:
0.132s

Re: Fastest Comparison Method?

Posted: 2015-10-09T16:00:29-07:00
by blue-j
thanks so much! I didn't know of the "time" command! : )