How to create blender with opencv-python
Patented stuff is usually just moved to the contrib repository, so you have to clone the original OpenCV repo, then add the contrib over and maybe modify a few compile options to get all your required things back and running.
I'm using opencv3.4 to stitch images with a lot of customization, but cv.detail_MultiBandBlender seems only avaiable in opencv 4.x but with 4.x surf is "patented and is excluded". Is there any hack so that I can use blender with opencv-python3.4?