skin color Gaussian model c#

I need a C# 2008 code for this project : "NO USE OF OPEN CV or EMU CV or any DLL allowed" Project: Skin Likelihood based on Gaussian Model I have a face data set, for this set I want to design a Gaussian model that based on the attached papers. The model takes the images for training. - Image converted into pure colors , R=R/R+G+B,G=G/R+G+B,B=B/R+G+B 1- Convert each image from RGB to YCbCr 2- It calculates the mean and covariance for each image Cb and Cr, then 3- Find the Gaussian joint probability density function (pdf) pdf = exp(-0.5* x'*inv(brcov)* x) ,where x = [(cb-bmean); (cr-rmean), "bmean&rmeam) are calculated from the point 2. 4- Apply Low pass files 3x3 on the result. 5- Divide each pixel on max pdf value. 6- Apply the Finding the adaptive threshold algorithm as this matlab code % Adaptive Thresholding previousSkin2 = zeros(i,j); changelist = []; for threshold = 0.55:-0.1:0.05 skin2 = zeros(i,j); skin2(find(skin1>threshold)) = 1; change = sum(sum(skin2 - previousSkin2)); changelist = [changelist change]; previousSkin2 = skin2; end 7-Finally, optimal threshold is calculated for segmentation as matlab code below: % Finding the optimal threshold [C, I] = min(changelist); optimalThreshold = (7-I)*0.1 skin2 = zeros(i,j); skin2(find(skin1>optimalThreshold)) = 1; All of above are in these matlab codes: [login to view URL]~robles/ee368/detect.m [login to view URL]~robles/ee368/ChromaDist.m [login to view URL]~robles/ee368/skinmodel.m [login to view URL]~robles/ee368/SegmentSkin.m I'll provide you with the database after acceptance