On Tue, Sep 2, 2008 at 10:23 AM, FreeBSD <[EMAIL PROTECTED]> wrote: > Tom Marchand a écrit : > >> Hash the images and compare the hashes. >> >> -------------- Original message ---------------------- >> From: FreeBSD <[EMAIL PROTECTED]> >> >>> Hi everyone, >>> >>> I'm trying to determine if 2 jpeg images are identical. The images are >>> screenshots taken with scrot at different times. The point is to know if the >>> display is working correctly. I tried to use 'diff' but without success, >>> probably because of the metadata included in the image. I also tried the >>> 'compare' command from imagemagick, but it produce an image containing the >>> difference between the 2 images instead of telling me if both images are >>> identical. >>> >>> So, my question is what are you using to determine if 2 images are >>> identical? >>> >>> I'm using FreeBSD 7.0 and I need to be able to script this comparaison >>> for an integration in Nagios. >>> >>> Thank you, >>> >>> Martin >>> >> > I just tried it and it doesn't work. The hashes are different. I can't > say that I'm surprised since 'diff' is "seeing" a difference between the > two identical images. > > > Thanks for the suggestion >
Yes, there's a huge difference between testing differences in images and testing differences in files. What do you mean by "...know if the display is working correctly."? Andrew _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"