Correlation



$$-1 \leq  corr(X, Y) = \frac{cov(X, Y)}{\sigma_X\sigma_Y} \leq 1$$
### Difference with [Convolution](https://texonom.com/convolution-54def9d34de64e199ea46393675af2ce) is flip 
$$(f \ast g) (x, y) = \int f(i,j) I(x+i, y+j)$$
### Correlations
|Title|
|:-:|
|[Pearson correlation coefficient](https://texonom.com/pearson-correlation-coefficient-7a5a92a34f8944efb0d2c28dce89f913)|





> [Correlation](https://en.wikipedia.org/wiki/Correlation)





