It doesn't look like that demo is using OpenCV for more than just reading
and decoding images into byte arrays. And then a difference between the
byte arrays is used to determine if the images are the same. Seems you
could probably do the same thing with PySide using QImage

http://doc.qt.io/qt-5/qimage.html#operator-not-eq

It defines a similar subtraction operator that says it first checks cast
stuff like width/height and then would do a data comparison.

Im sure OpenCV *could* be used to do more advanced stuff like checking if
the images are different within certain thresholds to allow for stuff like
noise. Or evaluating if the images are generally of the same subject. And
also, you would probably get a wider support of file formats with OpenCV.

If you don't want to have to compile OpenCV and numpy, and your goal is
purely to check the difference, then there is always the option to shell
out from your script to something like idiff (provided by OpenImageIO) or
whatever other diff tools exist.

Justin


On Fri, Aug 10, 2018, 6:08 PM Hyuk Ko <kohyukw...@gmail.com> wrote:

> Hello!
>
> I am trying to make a simple image comparing program in maya
>
> https://www.youtube.com/watch?v=LNzC4NYYWdg  something like this...
>
> I looks like a really easy job by using OpenCV and numpy
>
> Tried to install these packages in maya, and failed HARD... (first time
> installing outer packages to maya... not easy as it sounds)
>
> Is it possible to make a similar program by using pyside?
>
> Thanks in advance!
>
>
>
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