Qt for Python (PySide/Shiboken)

@boris_ QGraphicsView is likely overkill for what you're trying to do. It provides it's own translation and coordinate system which allows one to draw many thousands of primitives more efficiently than is done with straight Qt Widgets using builtin widgets. However, it is an older API that, while still supported, has mostly been superceded by QML. If you're just trying to display OpenCV in a window with some Qt controls, then QLabel should be fine for that. You can also do this with QML - and use the Image item.