prarameters tobe passed for building GMM

I want to build a Gaussian Mixture Model for my skin color database. Whether i have to pass each channel separately for building GMM model or all the channel data should be stored in a multidimensional vector and passed for parameter estimation and model building. Please suggest the proper way to build a GMM model for skin color images i have in my database.

Answer 1

[Adam]

If you use the 'fitgmdist' function from the Statistics Toolbox then you pass in all the data as a single multi-dimensional array.