PIL: Getting a two color difference between images
Lie Ryan
lie.1296 at gmail.com
Sat Oct 25 03:59:41 EDT 2008
On Fri, 24 Oct 2008 14:51:07 -0500, Kevin D. Smith wrote:
> I'm trying to get the difference of two images using PIL. The
> ImageChops.difference function does almost what I want, but it takes the
> absolute value of the pixel difference. What I want is a two color
> output image: black where the image wasn't different, and white where it
> was different. Right now I get black where it wasn't different, and
> abs(image1-image2) where it was different.
>
> It would be nice if I could specify the colors for difference and no
> difference. This sounds like it should be easy, but I just don't see
> how to do it.
>
> --
> Kevin D. Smith
Use the Image.point()
Also, see PIL Handbook: http://www.pythonware.com/library/pil/handbook/
index.htm
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