Alec Resnick on wrote...
| X-Spam-Report:
| Good day! I'm a bit new to ImageMagick, and I was wondering: I have
| ~10k pictures with a red background. It's not perfectly red--they're
| photos taken on top of a piece of red backdrop. And I'd like to
| remove this red backdrop. Selecting by color is feasible, but
| doesn't do exactly what I want, since the portion I want to remove is
| contiguous, I'd like to take advantage of this fact.
|
| So is there a way to mimic the magic wand/fuzzy select function in
| Magick? Something where I could indicate a "start pixel" and a
| threshold?
|
| For reference, here's the best output I can achieve with selection by
| color (I've filled in the selected area, rather than remove, for
| comparison's sake). Note the red missed at the bottom of the paper.
|
| via
| convert -fill "#80c0e0" -fuzz 17% -opaque "#B54F50"
| magick_before.jpg magick_after.jpg
|
| Original image: http://web.mit.edu/~aresnick/Public/magick_before.jpg
| Modified image: http://web.mit.edu/~aresnick/Public/magick_after.jpg
|
| Thanks for your help!
|
See...
Color Fill Primitives
http://www.imagemagick.org/Usage/draw/#color
There is also a -floodfill function but I have not used it a lot,
iIt lets you specify the base color of the flood fill. that is the
center of the 'fuzz'
Anthony Thyssen ( System Programmer ) <[EMAIL PROTECTED]>
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