Added the global structure into cpp file

Author: Nerdyvedi

modules/ximgproc/src/globalmatting.cpp

@@ -8,6 +8,27 @@ namespace cv
 {
 namespace ximgproc
 {
+ 
+struct IntensityComp
+{
+	    IntensityComp(const cv::Mat_<cv::Vec3b> &image) : image(image)
+	    {
+
+	    }
+
+	    bool operator()(const cv::Point &p0, const cv::Point &p1) const
+	    {
+		const cv::Vec3b &c0 = image(p0.y, p0.x);
+		const cv::Vec3b &c1 = image(p1.y, p1.x);
+
+		return ((int)c0[0] + (int)c0[1] + (int)c0[2]) < ((int)c1[0] + (int)c1[1] + (int)c1[2]);
+	    }
+
+	    const cv::Mat_<cv::Vec3b> &image;
+};
+
+
+	
 std::vector<cv::Point> GlobalMatting::findBoundaryPixels(const cv::Mat_<uchar> &trimap, int a, int b)
 {
     std::vector<cv::Point> result;