public static IplImage extractSkinAsIpl(IplImage target)
{
IplImage origin = target.Clone();
IplImage maskImg = ConvertToBinaryIpl(origin);
maskImg.Not(maskImg);
target.AndS(0, target, maskImg);
target.Smooth(target, SmoothType.Median);
//temp test code
IplImage temp = new IplImage(target.Size, BitDepth.U8, 1);
target.CvtColor(temp, ColorConversion.BgrToGray);
target = temp;
//
return(target);
}