Thank you guys for your reply! I will try to face this:) Ela 27 cze 2014 22:22 "Craig DeForest" <[email protected]> napisał(a):
> Heh. Thanks for answering this, Chris. I missed it the first time 'round. > > Elzbieta, you can find whether a particular pattern is present in an image > by convolving the image with the pattern you're looking for. The resulting > convolved image will have a spike everywhere that the pattern is present. > One PDL function you can use to do that is convolveND(). > > > On Jun 27, 2014, at 6:24 AM, Chris Marshall <[email protected]> > wrote: > > > Perl and PDL can be used for image processing. > > Probably the easiest way to familiarize yourself > > with PDL capabilities is to install PDL and then > > look at the PDL Book. You can find this and other > > PDL information starting at the PDL home page: > > > > http://pdl.perl.org > > > > --Chris > > > > On Tue, Jun 24, 2014 at 3:03 AM, Elżbieta Jakubska > > <[email protected]> wrote: > >> I need to compare many images to pattern image (logo) and find out > which of > >> them match the pattern (shape is more meaningful than colour). Logo has > the > >> same size, the same rotation etc on every picture, but backgrounds are > >> different, including additional edges in interesting area. Till now I > was > >> doing this with Image Magick (edge detection + compare), but it is slow > and > >> not always works correctly. > >> Is there a way to do this using PDL? Could anybody help me? > >> > >> Thank you very much! > >> > >> Ela > >> > >> _______________________________________________ > >> Perldl mailing list > >> [email protected] > >> http://mailman.jach.hawaii.edu/mailman/listinfo/perldl > >> > > > > _______________________________________________ > > Perldl mailing list > > [email protected] > > http://mailman.jach.hawaii.edu/mailman/listinfo/perldl > > > >
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