Please implement Gaussian$-$based skin color detector in MatLab:

$1.$ Collect flesh tone training data using build$-$in imcrop or ginput functions

$2.$ Try with different color spaces RGB$,$ Normalized$-$RGB$,$ HSI, HSV

$3.$ Train a Gaussian color model. Need to estimate the mean and covariance of the training data as the parameters of the Gaussian distribution.

$4.$ Find skin tone based on the Gaussian distribution, Need to set a threshold.

Assuming both training and test images are $24-$bit bitmap images.