List Icon
Mailing list Archive

2019 up to July 2022 | 20182017  |  2016  2015 2014 | 2013

The mailing list has been closed since July 2022, but continues to serve as an archive of information about QF-Test.
If you want to stay informed about news about QF-Test, you can simply subscribe to our newsletter:
Subscribe to Newsletter  

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [QF-Test] Feature request: Inverted XOR and difference for image checks

  • Subject: Re: [QF-Test] Feature request: Inverted XOR and difference for image checks
  • From: Gregor Schmid <Gregor.Schmid@?.de>
  • Date: Wed, 25 Nov 2015 19:24:43 +0100

Hello Marek,

sorry, I almost forgot to answer.

Thanks for your suggestion and the explanation, it sounds interesting.
We're looking into it and will give it a try. If the result is good
we'll probably add an option.

Best regards,

"Nedvěd, Marek" <m.nedved@?.de> writes:

> Hello Greg,
> I made a misunderstanding here, because I described both highlighted difference and xor.
> The highlighted difference is actually helpful if there are really
> just small differences and should be as it is.
> The xor is what I wanted to be inverted. See, if you just xor the
> colors, you will get the negative of the image, so if you invert it,
> you will get the colors right, and the similarities will be white.
> This can be useful when you have a slight difference in a colored
> graph with multiple lines. If the image would be inverted I can
> directly see which line has offset.
> Best regards,
> Marek
> -----Original Message-----
> From: Gregor Schmid [mailto:Gregor.Schmid@?.de]
> Sent: Wednesday, November 18, 2015 6:20 PM
> To: qftest-list@?.de
> Cc: Nedvěd, Marek
> Subject: Re: [QF-Test] Feature request: Inverted XOR and difference for image checks
> Hello Marek,
> for me, the difference image is the most important one in cases where
> there is no offset and minimal differences in the color values, so it
> can't be spotted in any of the other versions. In the difference
> image, the pixels with different values clearly stand out and when you
> move the mouse pointer of such a pixel you'll see both color values
> shown above the image.
> In such a case, the actual difference between the values is so close
> to black anyways, that your suggestion - is I understand it correctly
> - would only result in an inverse of the current difference image.
> Best regards,
>     Greg
> "Nedvěd, Marek" <m.nedved@?.de> writes:
>> Hello QF Test people,
>> I would like to ask for a feature request for the image comparison.
>> The images in the run-log are good. Expected and actual images are
>> very helpful and the controls to compare them side-by-side, under
>> each other or just to switch them are great.
>> My only concern is with the xor and difference. If there are some
>> obvious differences, then it is ok, but when there are just small
>> differences, like small offsets or slight differences in colors,
>> then it is not very pleasant to use.
>> I suggest to deduct the resulting pixel color from black. Then most of
>> the diff picture will be white and the differences will be in the actual color of the difference.
>> But maybe it is just me, so I would like to ask for some feedback for
>> this feature, if anyone is happy with it, please reply.
>> Best regards,
>> Marek Nedved
>> _______________________________________________
>> qftest-list mailing list
>> qftest-list@?.de

Gregor Schmid

E: gregor.schmid@?.de
T: +49 8171 38648-11
F: +49 8171 38648-16

Quality First Software GmbH |
Tulpenstr. 41 | 82538 Geretsried | Germany
GF Gregor Schmid, Dr. Martina Schmid, Karlheinz Kellerer
HRB München 140833