cv::Sobel(cvMat, grad_x, CV_16S, 1, 0);
cv::Sobel(cvMat, grad_y, CV_16S, 0, 1);

cv::Point seed(obj.point1,obj.point2);
double red  = 255.0 * newcolor.red;
double green  = 255.0 * newcolor.green;
double blue  = 255.0 * newcolor.blue;