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-compose modes

Posted: 2012-07-13T14:53:18-07:00
by toshog
hello...

in a script called textcleaner located at http://www.fmwconcepts.com/imagemagick/textcleaner/ i found a operator for -compose (copy_opacity) which is not specified here http://www.imagemagick.org/script/comma ... hp#compose.

what "type of image composition" does copy_opacity set? is it deprecated?

thanks...

Re: -compose modes

Posted: 2012-07-13T15:00:29-07:00
by fmw42
It is there at http://www.imagemagick.org/script/compose.php (under copy*). Also see http://www.imagemagick.org/Usage/compose/#copyopacity

It puts a grayscale image into the alpha channel of another image.

Re: -compose modes

Posted: 2012-07-15T18:24:52-07:00
by anthony
See actual examples in IM Examples, "Image Compostion"
http://www.imagemagick.org/Usage/compose/