for machine learning and RPi:
https://www.learnopencv.com/ gives a lot of examples with opencv, both in C++ and python. as opencv incorporates ML, a lot of notions are explained.
BTW: jul 10,2020 issue was
https://www.learnopencv.com/build-and-i ... pberry-pi/ (for each and every brand of RPi...). I have not tried yet, but duid not see anything absurd (used this site for OCV 2 and 3, was satisfied)
https://www.pyimagesearch.com/ makes a lot of advertisement, but taught me a lot, too.
BTW: both sites were rather skeptical w/r using RPi s to
learn (took me
weeks for a classical example: pyimagesearch explained how to restart a traing when ... machine gets shut off or GPU farms . 100 times faster than RPis- "give" GPUs to other users after some
hours...). But RPi+OCV can be great in
running trained networks...
Both sites explain (and compare performance) how to choose trained networks (and pyimagesearch explains how to specialize a pretrained network...)