SikuliX

Pattern match preview in IDE shows two different matches while "Exact" similarity is set

Asked by Alex Lunyov

I have a browser with two opened tabs of the same site. Each tab shows the same favicon of the site. But here is the difference. When the tab is not active the favicon background is slightly grayed. The logo itself is the same. But Sikuli's (1.1.1 2016-6-6) IDE match preview can't detect the difference even while the exact matching is set. It catches both favicons. Is there a solution to catch exact favicon with a clear white background?

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Alex Lunyov
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Alex Lunyov (lunyov-av) said : 		#1

According to matching algorithm the "exact" similarity is not the same as pixel-by-pixel similarity, am I right? So, is there any pixel-by-pixel comparison way?

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RaiMan (raimund-hocke) said : 		#2

in the current implementation "exact" means, that the score is > 0.99.

So if one match yields 0.991... and the other 0.992..., the both are "exact" in this sense.

A workaround is to evaluate the score yourself and make your decision:
m = exists(someImage)
print m. getScore()

Another option always is, to optimize the shot, so that it contains as little background as possible.

see:
http://sikulix-2014.readthedocs.io/en/latest/basicinfo.html#sikulix-how-does-it-find-images-on-the-screen

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Alex Lunyov (lunyov-av) said : 		#3

Thanks a lot for your suggestion!