Figure convolution network knowledge Summary: https://mayi1996.top/2019/03/14/%E5%9B%BE%E7%BD%91%E7%BB%9C/
Figure convolution network in the end how to do, this is a minimalist Numpy achieve:
https://www.jiqizhixin.com/articles/2019-02-20-12
https://www.jiqizhixin.com/articles/2019-02-20-12