https://github.com/tjwei/NCTU_IOG5017
(3,4,5) (4,5,6) $\approx$ (3, 20) @ (20, 6)
$a_{i,j,k}$ $b_{j,k,n}$ → $c_{i,n}= \sum_{j, k} a_{i, j, k} \times b_{j,k,n}$
$c_{i,n} = a_{i,j,k}b_{j,k,n}$
$c^i_{n} = a^{ijk}b_{jkn}$
Example: https://www.dropbox.com/sh/oi9wdd0uc5uc700/AAAXFo4uWPG6ZEygQ5GY50tma?dl=0.
pandas
opencv/skimage
sklearn