1 files changed, 164 insertions, 0 deletions
diff --git a/sci_gateway/cpp/opencv_houghcircles.cpp b/sci_gateway/cpp/opencv_houghcircles.cpp
new file mode 100644
index 0000000..4b36aa6
--- /dev/null
+++ b/sci_gateway/cpp/opencv_houghcircles.cpp
@@ -0,0 +1,164 @@
+/********************************************************
+Authors: Sukul Bagai, Abhilasha Sancheti
+********************************************************/
+
+#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_houghcircles(char *fname, unsigned long fname_len)
+  {
+
+    SciErr sciErr;
+    int iRows=0,iCols=0;
+    int *piAddr2  = NULL;
+    int *piAddr3  = NULL;
+    int *piAddr4  = NULL;
+    int *piAddr5  = NULL;
+    int *piAddr6  = NULL;
+    int *piAddr7  = NULL;
+    int i,j,k;
+    double *dp =NULL , *mindist = NULL ,*param1= NULL ,*param2=NULL;
+    double *minradius =NULL, *maxradius = NULL;
+
+    //checking input argument
+    CheckInputArgument(pvApiCtx, 7, 7);
+    CheckOutputArgument(pvApiCtx, 1, 1) ;
+    
+    Mat src;
+    retrieveImage(src,1);
+    
+   // for dp parameter of houghCircles function
+    sciErr = getVarAddressFromPosition(pvApiCtx,2,&piAddr2);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    sciErr = getMatrixOfDouble(pvApiCtx, piAddr2, &iRows, &iCols ,&dp);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+
+ // for minDist parameter of houghCircles function
+    sciErr = getVarAddressFromPosition(pvApiCtx,3,&piAddr3);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    sciErr = getMatrixOfDouble(pvApiCtx, piAddr3, &iRows, &iCols ,&mindist);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }   
+
+     // for param1 parameter of houghCircles function 
+    sciErr = getVarAddressFromPosition(pvApiCtx,4,&piAddr4);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    sciErr = getMatrixOfDouble(pvApiCtx, piAddr4, &iRows, &iCols ,&param1);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+
+      // for param2 parameter of houghCircles function 
+    sciErr = getVarAddressFromPosition(pvApiCtx,5,&piAddr5);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    sciErr = getMatrixOfDouble(pvApiCtx, piAddr5, &iRows, &iCols ,&param2);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }  
+  // for minradius parameter of houghCircles function 
+    sciErr = getVarAddressFromPosition(pvApiCtx,6,&piAddr6);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    sciErr = getMatrixOfDouble(pvApiCtx, piAddr6, &iRows, &iCols ,&minradius);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    } 
+     // for maxradius parameter of houghCircles function 
+    sciErr = getVarAddressFromPosition(pvApiCtx,7,&piAddr7);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    sciErr = getMatrixOfDouble(pvApiCtx, piAddr7, &iRows, &iCols ,&maxradius);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }  
+  
+    Mat src_gray;
+    cvtColor( src, src_gray, CV_BGR2GRAY );
+   
+    /// Reduce the noise so we avoid false circle detection
+    
+
+    vector<Vec3f> circles;
+
+    /// Apply the Hough Transform to find the circles
+    HoughCircles( src_gray, circles, CV_HOUGH_GRADIENT, dp[0], mindist[0], param1[0], param2[0], minradius[0], maxradius[0] );
+    int rows = circles.size();
+    cout<<circles.size();
+    double *output = (double *)malloc(3*rows*sizeof(double *));
+
+    /// Draw the circles detected
+    for(int i=0;i<rows;i++)
+    {
+        *(output + i*3 + 0) = circles[i][0];
+        *(output + i*3 + 1) = circles[i][1];
+        *(output + i*3 + 2) = circles[i][2];
+    }
+
+    sciErr = createMatrixOfDouble(pvApiCtx, nbInputArgument(pvApiCtx) + 1, rows, 3, output);
+    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;
+
+
+ }
+
+}
+