Modulok <modu...@gmail.com> writes: > I'm not even sure such a tool exists, but it's worth asking: > > I'm looking for a pseudo-checksum tool for use with catalogging > images. For example, a strict checksum algorithm, like the sha family, > will produce a dramatically different checksum for two files which > differ by only a single bit. I'm looking for something where two > images images, which are similar, get a proportionally similar > checksum. When I speak of similarities I'm referring to their image > patterns. i.e two images of differing sizes, which are otherwise > identical, would produce very similar checksums. So the closer the > checksums are, the more similar two given images are. > > Does anyone know of anything like this?
It turns out this is a remarkably hard problem. You can look at p5-Image-Compare, but be prepared to experiment before trusting the results. -- Lowell Gilbert, embedded/networking software engineer, Boston area http://be-well.ilk.org/~lowell/ _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"