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Image processing (resize, rotation) without loops or libs

So, I have a university Python project in development where I need to manipulate an image and apply filters, such as black & white, sepia, etc. Some of the filter options are resize, rotation and translation, and I have to do these without using stuff like cv2.resize(). I did some tests with for loops, but it’s not the fastest thing and I need a way to optmize this part. Is there a way to avoid all those loops?