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[Bug 673995] Re: [request] Transparent pixels should be ignored in matching process

To: sikuli-driver@xxxxxxxxxxxxxxxxxxx
From: Brian Cullinan <bjcullinan@xxxxxxxxx>
Date: Tue, 05 Jan 2016 18:15:04 -0000
Reply-to: Bug 673995 <673995@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

I meant to add, after some additional research, I can also confirm that
transparent pngs don't match when applied to dark backgrounds.  Using
the "Matching Preview" window in SikuliX IDE.

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https://bugs.launchpad.net/bugs/673995

Title:
  [request] Transparent pixels should be ignored in matching process

Status in Sikuli:
  In Progress

Bug description:
  I'm using Sikuli 0.10.2 on a 32-bit Windows XP system. I just noticed
  that if you are using a png file, containing transparent pixels as a
  pattern for image recognition, these pixels are not skipped during the
  matching process, thus resulting in a wrong match if you have some
  kind of background under the transparent part of the image. I think
  this behavior is incorrect - and Sikuli could be even more powerful if
  able to skip some pixels from the pattern.

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