1 files changed, 85 insertions, 0 deletions
diff --git a/sci_gateway/cpp/opencv_graydiffweight.cpp b/sci_gateway/cpp/opencv_graydiffweight.cpp
new file mode 100644
index 0000000..a0ea5e8
--- /dev/null
+++ b/sci_gateway/cpp/opencv_graydiffweight.cpp
@@ -0,0 +1,85 @@
+/********************************************************
+Authors: Dhruti Shah 
+********************************************************/
+
+#include <numeric>
+#include "opencv2/core/core.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/opencv.hpp"
+#include <iostream>
+using namespace cv;
+using namespace std;
+extern "C"
+{
+  #include "api_scilab.h"
+  #include "Scierror.h"
+  #include "BOOL.h"
+  #include <localization.h>
+  #include <sciprint.h>
+  #include "../common.h"
+  int opencv_graydiffweight(char *fname, unsigned long fname_len)
+  {
+
+    SciErr sciErr;
+    int intErr = 0;
+    int iRows=0,iCols=0;
+    int *piAddr = NULL;
+    int *piAddrNew = NULL;
+    int *piAddr2  = NULL;
+    int *piAddr3  = NULL;
+    int *piAddr4  = NULL;
+    int *piAddr5  = NULL;
+    int i,j,k;
+    double refGrayVal;
+
+    //checking input argument
+    CheckInputArgument(pvApiCtx, 2, 2);
+    CheckOutputArgument(pvApiCtx, 1, 1) ;
+
+
+    Mat image;
+    retrieveImage(image, 1); 
+    cvtColor( image, image, CV_BGR2GRAY );
+
+    //for value of refGrayVal
+    sciErr = getVarAddressFromPosition(pvApiCtx,2,&piAddr2);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+   intErr = getScalarDouble(pvApiCtx, piAddr2, &refGrayVal);
+     if(intErr)
+    {
+        return intErr;
+    }   
+
+    double value1, value2;
+    Mat new_image = Mat::zeros(image.size(),image.type());
+    for(int i=0; i<image.rows; i++)
+    {
+        for(int j=0; j<image.cols; j++)
+        {
+            value1 = image.at<uchar>(i,j);
+            value2 = abs(value1-refGrayVal);
+            new_image.at<uchar>(i,j)=value2;
+        }
+    }
+
+    string tempstring = type2str(new_image.type());
+    char *checker;
+    checker = (char *)malloc(tempstring.size() + 1);
+    memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
+    returnImage(checker,new_image,1);
+    free(checker); 
+
+    //Assigning the list as the Output Variable
+    AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
+    //Returning the Output Variables as arguments to the Scilab environment
+    ReturnArguments(pvApiCtx);
+    return 0;
+
+  }
+/* ==================================================================== */
+}
+