New changes done and removed opencv_extra folder

Removed opencv_extra folder inside opencv folder

New changes done

Removed test images

modules/photo/src/contrast_preserve.hpp

@@ -427,7 +427,6 @@ void Decolor::grayImContruct(vector <double> &wei, Mat img, Mat &Gray)
                 maxval = Gray.at<float>(i,j);
         }
 
-    for(int i=0;i<h;i++)
-        for(int j=0;j<w;j++)
-            Gray.at<float>(i,j) = (Gray.at<float>(i,j) - minval)/(maxval - minval);
+    Gray -= minval;
+    Gray /= maxval - minval;
 }

modules/photo/src/npr.hpp

@@ -173,7 +173,6 @@ void Domain_Filter::compute_Rfilter(Mat &output, Mat &hz, float sigma_h)
 {
     int h = output.rows;
     int w = output.cols;
-    int channel = output.channels();
 
     float a = (float) exp((-1.0 * sqrt(2.0)) / sigma_h);
 
@@ -190,11 +189,7 @@ void Domain_Filter::compute_Rfilter(Mat &output, Mat &hz, float sigma_h)
     {
         for(int j =1; j < w; j++)
         {
-            for(int c = 0; c<channel; c++)
-            {
-                temp.at<float>(i,j*channel+c) = temp.at<float>(i,j*channel+c) +
-                    (temp.at<float>(i,(j-1)*channel+c) - temp.at<float>(i,j*channel+c)) * V.at<float>(i,j);
-            }
+           temp.at<float>(i,j) = temp.at<float>(i,j) + (temp.at<float>(i,j-1) - temp.at<float>(i,j)) * V.at<float>(i,j);
         }
     }
 
@@ -202,11 +197,7 @@ void Domain_Filter::compute_Rfilter(Mat &output, Mat &hz, float sigma_h)
     {
         for(int j =w-2; j >= 0; j--)
         {
-            for(int c = 0; c<channel; c++)
-            {
-                temp.at<float>(i,j*channel+c) = temp.at<float>(i,j*channel+c) +
-                    (temp.at<float>(i,(j+1)*channel+c) - temp.at<float>(i,j*channel+c))*V.at<float>(i,j+1);
-            }
+           temp.at<float>(i,j) = temp.at<float>(i,j) + (temp.at<float>(i,j+1) - temp.at<float>(i,j)) * V.at<float>(i,j+1);
         }
     }
 

modules/photo/src/seamless_cloning.hpp

@@ -482,7 +482,6 @@ void Cloning::normal_clone(Mat &I, Mat &mask, Mat &wmask, Mat &cloned, int num)
 {
     int w = I.size().width;
     int h = I.size().height;
-    int channel = I.channels();
 
     initialization(I,mask,wmask);
 
@@ -496,25 +495,18 @@ void Cloning::normal_clone(Mat &I, Mat &mask, Mat &wmask, Mat &cloned, int num)
     {
         for(int i=0;i < h; i++)
             for(int j=0; j < w; j++)
-                for(int c=0;c<channel;++c)
+            {
+                if(abs(sgx.at<float>(i,j) - sgy.at<float>(i,j)) > abs(grx.at<float>(i,j) - gry.at<float>(i,j)))
+                {
+                    srx32.at<float>(i,j) = sgx.at<float>(i,j) * smask.at<float>(i,j);
+                    sry32.at<float>(i,j) = sgy.at<float>(i,j) * smask.at<float>(i,j);
+                }
+                else
                 {
-                    if(abs(sgx.at<float>(i,j*channel+c) - sgy.at<float>(i,j*channel+c)) >
-                            abs(grx.at<float>(i,j*channel+c) - gry.at<float>(i,j*channel+c)))
-                    {
-
-                        srx32.at<float>(i,j*channel+c) = sgx.at<float>(i,j*channel+c)
-                            * smask.at<float>(i,j);
-                        sry32.at<float>(i,j*channel+c) = sgy.at<float>(i,j*channel+c)
-                            * smask.at<float>(i,j);
-                    }
-                    else
-                    {
-                        srx32.at<float>(i,j*channel+c) = grx.at<float>(i,j*channel+c)
-                            * smask.at<float>(i,j);
-                        sry32.at<float>(i,j*channel+c) = gry.at<float>(i,j*channel+c)
-                            * smask.at<float>(i,j);
-                    }
+                    srx32.at<float>(i,j) = grx.at<float>(i,j) * smask.at<float>(i,j);
+                    sry32.at<float>(i,j) = gry.at<float>(i,j) * smask.at<float>(i,j);
                 }
+            }
     }
     else if(num == 3)
     {