Which library is used for image processing in python.

Answer 1

To name a few, like

OpenCV for Python
https://pypi.org/project/opencv-python/

Scikit Image
https://scikit-image.org

Eh, it's better if you Google it yourself. There is quite a variety of choices.

https://www.datasciencecentral.com/profiles/blogs/9-python-libraries-which-can-help-you-in-image-processing

Answer 2

I can recommend PIL, it's light and yet powerful :)