[Image-SIG] Removing specific range of colors from scanned image
fredrik at pythonware.com
Tue Apr 28 21:18:23 CEST 2009
On Tue, Apr 28, 2009 at 8:58 PM, Scott David Daniels
<Scott.Daniels at acm.org> wrote:
> Warning: this distance function is the product of the three elements,
> so an exact match on red, green, or blue will look like a match on all.
> Try something like this:
> distance2 = 3 * distance ** 2
> mask = ImageMath.eval("convert((((r-R)**2 + (g-G)**2 + (b-B)**2) "
> " < distance2) * 255, 'L')",
Yeah, brain was not fully engaged when I wrote that. Sorry for that,
and thanks for fixing it.
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