Calculates a mean and standard deviation of array elements.
https://docs.opencv.org/4.x/d2/de8/group__core__array.html#ga191389f8a0e58180bb13a727782cd461
input array that should have from 1 to 4 channels so that the result can be stored in Scalar_ .
optional operation mask.
Calculates a mean and standard deviation of array elements.
https://docs.opencv.org/4.x/d2/de8/group__core__array.html#ga191389f8a0e58180bb13a727782cd461