added new files

modules/photo/include/opencv2/photo.hpp

@@ -288,6 +288,8 @@ public:
 
 CV_EXPORTS_W Ptr<MergeRobertson> createMergeRobertson();
 
+CV_EXPORTS_W void decolor(InputArray src, OutputArray grayscale, OutputArray color_boost);
+
 } // cv
 
 #endif

modules/photo/src/contrast_preserve.cpp

@@ -0,0 +1,76 @@
+#include "precomp.hpp"
+#include "opencv2/photo.hpp"
+#include "opencv2/imgproc.hpp"
+#include "math.h"
+#include <vector>
+#include <limits>
+#include <iostream>
+
+#include "contrast_preserve.hpp"
+
+using namespace std;
+using namespace cv;
+int rounding(double);
+
+int rounding(double a)
+{
+        return int(a + 0.5);
+}
+
+void cv::decolor(InputArray _src, OutputArray _gray, OutputArray _boost)
+{
+        Mat I = _src.getMat();
+        _gray.create(I.size(), CV_8UC1);
+        Mat dst = _gray.getMat();
+
+        _boost.create(I.size(), CV_8UC3);
+        Mat color_boost = _boost.getMat();
+
+        if(!I.data )
+        {
+                cout <<  "Could not open or find the image" << endl ;
+                return;
+        }
+        if(I.channels() !=3)
+        {
+                cout << "Input Color Image" << endl;
+                return;
+        }
+
+        float sigma = .02;
+        int maxIter = 8;
+        int iterCount = 0;
+
+        int h = I.size().height;
+        int w = I.size().width;
+
+        Mat img;
+        Decolor obj;
+
+        double sizefactor;
+
+        if((h + w) > 900)
+        {
+                sizefactor = (double)900/(h+w);
+                resize(I,I,Size(rounding(h*sizefactor),rounding(w*sizefactor)));
+                img = Mat(I.size(),CV_32FC3);
+                I.convertTo(img,CV_32FC3,1.0/255.0);
+        }
+        else
+        {
+                img = Mat(I.size(),CV_32FC3);
+                I.convertTo(img,CV_32FC3,1.0/255.0);
+        }
+
+        obj.init();
+
+        vector <double> Cg;
+        vector < vector <double> > polyGrad;
+        vector < vector <double> > bc;
+        vector < vector < int > > comb;
+
+        vector <double> alf;
+
+
+}
+

modules/photo/src/contrast_preserve.hpp

@@ -0,0 +1,31 @@
+#include "precomp.hpp"
+#include "opencv2/photo.hpp"
+#include "opencv2/imgproc.hpp"
+#include "math.h"
+#include <vector>
+#include <limits>
+
+using namespace std;
+using namespace cv;
+
+class Decolor
+{
+        public:
+                Mat kernel;
+                Mat kernel1;
+                int order;
+                void init();
+                void grad_system(Mat img, vector < vector < double > > &polyGrad, vector < double > &Cg, vector < vector <int> >& comb);
+};
+
+void Decolor::init()
+{
+        kernel = Mat(1,2, CV_32FC1);
+        kernel1 = Mat(2,1, CV_32FC1);
+        kernel.at<float>(0,0)=1.0;
+        kernel.at<float>(0,1)=-1.0;
+        kernel1.at<float>(0,0)=1.0;
+        kernel1.at<float>(1,0)=-1.0;
+        order = 2;
+
+}