fixed grabCut: moved to double precision and added the noise to avoid zero determinant of covariance matrix
fixed grabCut: moved to double precision and added the noise to avoid zero determinant of covariance matrix

apavlenko/opencv,opencv/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,apavlenko/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv