Legacy ImageMagick Discussions Archive

anthony: I tried to do

convert -morphology Correlate test.png test_correlated.png

but it will say I'm missing a morphology argument (maybe a kernel image? Don't know what this particular image is).

fmw42: how could I delete the alpha channel in GIMP? You're saying it's not finding the square ...

convert test.png -channel R -threshold 100% -channel G -threshold 0% -channel B -threshold 100% test_magenta_mask.png

Test image: https://dl.dropbox.com/u/1512702/tmp/magenta/test.png
Output: https://dl.dropbox.com/u/1512702/tmp/magenta/test_magenta_mask.png

Mask to compare: https://dl.dropbox ...

Yes, the markers will always be of the same size. I tried using compare with -subimage-search option to search for the first marker, but it returned a false positive (somewhere around a menu item corner). I then tried to search for a chess-magenta/dark-magenta marker, it was better but still not ...

Hello!

I want to create a gallery which asks the user to take a screenshot of a 3rd-party 3d model viewer and then to send it to complete the submission of his/her work. My idea is to take these "raw" screenshots and then check for the markers (25px*25px 90°magenta angles) and then compare the ...