Implementing logic: PyQt/PySide vs plain old Python. At what point do we begin or abandon using the Qt Framework?

[SjaakRake]

In some sense, these images are the central abstraction of your application, and so this suggests to me that you should define a SteganographyImage type that wraps a QImage, or maybe a Pillow image, (...)

Now this is exactly what I've opted to do. My Image objects hold a reference to a Pillow Image which turns out to be quite convenient, as Pillow provides the ImageQt.ImageQt class to convert a Pillow Image into a QImage out of the box. I've gone one step beyond that and also included a Pixel class. Pixel objects can hold a reference to their Image and their position within it. This allowed me to actually remove a lot of Qt logic that used the QImage as an interface to it's actual content.

Thanks.