1 files changed, 133 insertions, 0 deletions
diff --git a/sci_gateway1/cpp/opencv_houghlines.cpp b/sci_gateway1/cpp/opencv_houghlines.cpp
new file mode 100644
index 0000000..28202d1
--- /dev/null
+++ b/sci_gateway1/cpp/opencv_houghlines.cpp
@@ -0,0 +1,133 @@
+/********************************************************
+Author: Shubheksha Jalan
+********************************************************/
+
+#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_houghlines(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 *piAddr6  = NULL;
+    int i,j,k;
+    double rho, theta, srn, stn, threshold;
+    CheckInputArgument(pvApiCtx, 6, 6);
+    CheckOutputArgument(pvApiCtx, 1, 1) ;
+
+
+    Mat image;
+    retrieveImage(image, 1); 
+    cvtColor(image, image, CV_BGR2GRAY);
+    //for value of rho
+     sciErr = getVarAddressFromPosition(pvApiCtx,2,&piAddr2);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+   intErr = getScalarDouble(pvApiCtx, piAddr2, &rho);
+     if(intErr)
+    {
+        return intErr;
+    }   
+
+    //for value of theta
+    sciErr = getVarAddressFromPosition(pvApiCtx,3,&piAddr3);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+   intErr = getScalarDouble(pvApiCtx, piAddr3, &theta);
+     if(intErr)
+    {
+        return intErr;
+    }   
+
+    //for value of threshold
+    sciErr = getVarAddressFromPosition(pvApiCtx,4,&piAddr4);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    intErr = getScalarDouble(pvApiCtx, piAddr4, &threshold);
+     if(intErr)
+    {
+        return intErr;
+    }   
+     //for value of srn
+    sciErr = getVarAddressFromPosition(pvApiCtx,5,&piAddr5);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    intErr = getScalarDouble(pvApiCtx, piAddr5, &srn);
+     if(intErr)
+    {
+        return intErr;
+    }   
+     //for value of stn
+    sciErr = getVarAddressFromPosition(pvApiCtx,6,&piAddr6);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    intErr = getScalarDouble(pvApiCtx, piAddr6, &stn);
+     if(intErr)
+    {
+        return intErr;
+    }   
+    vector < vector <double> > output;
+      cout<<"here5";
+    HoughLines(image, output, rho, theta, threshold, srn, stn);
+  cout<<"here5";
+//create matrix from 2-D vector
+    int row = output.size();
+    cout<<row;
+    double *cor = (double *)malloc(row*2*sizeof(double));
+    for (int i=0;i<row;i++)
+    {
+        *(cor + i*2 +0)=output[i][0];
+ //       cout<<output[i][0]<<" "<<output[i][1];
+        *(cor + i*2 +1)=output[i][1];
+    }
+  sciErr = createMatrixOfDouble(pvApiCtx, nbInputArgument(pvApiCtx) + 1, row, 2, cor);
+  if(sciErr.iErr)
+  {
+      printError(&sciErr, 0);
+      return 0;
+  }
+    //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;
+
+
+ }
+
+}
+\ No newline at end of file