1 files changed, 46 insertions, 0 deletions
diff --git a/sci_gateway/cpp/rgb2gray.cpp b/sci_gateway/cpp/rgb2gray.cpp
new file mode 100644
index 0000000..d696bb6
--- /dev/null
+++ b/sci_gateway/cpp/rgb2gray.cpp
@@ -0,0 +1,46 @@
+/* ==================================================================== */
+/* Author :Priyanka Hiranandani NIT Surat                               */
+/* ==================================================================== */
+/* Syntax : return_image=rgb2gray(sourceimage)                          */
+/* ==================================================================== */
+#include <numeric>
+#include "opencv2/core/core.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/opencv.hpp"
+#include "opencv2/imgproc/imgproc.hpp"  //new header file for cvtColor function of opencv
+#include <iostream>
+using namespace cv;
+using namespace std;
+extern "C"
+{
+#include "api_scilab.h"
+#include "Scierror.h"
+#include "BOOL.h"
+#include <localization.h>
+#include<string.h>
+#include "../common.h"
+int opencv_rgb2gray(char *fname, unsigned long fname_len)
+{
+
+    // Error management variable
+        SciErr sciErr;
+    //checking input argument
+        CheckInputArgument(pvApiCtx,1,1);
+    //checking output argument
+        CheckOutputArgument(pvApiCtx, 1, 1) 
+        Mat img,grayimg;
+    //calling function 
+        retrieveImage(img,1);
+        cvtColor(img, grayimg, CV_BGR2GRAY );
+        string tempstring = type2str(grayimg.type());
+        char* checker = (char *)malloc(tempstring.size() + 1);
+        memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
+        returnImage(checker,grayimg,1);
+       //returning output variable    
+        AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
+        ReturnArguments(pvApiCtx); 
+        return 0;
+}
+
+/* ==================================================================== */
+}