1 files changed, 71 insertions, 0 deletions
diff --git a/sci_gateway/cpp/opencv_imsubtract.cpp b/sci_gateway/cpp/opencv_imsubtract.cpp
new file mode 100644
index 0000000..1d7f3bd
--- /dev/null
+++ b/sci_gateway/cpp/opencv_imsubtract.cpp
@@ -0,0 +1,71 @@
+/********************************************************
+Function   :imsubtract
+Syntax     :C=imsubtract(A,B)
+Author     : Tess  Zacharias
+********************************************************/
+
+#include <numeric>
+#include "opencv2/core/core.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/opencv.hpp"
+#include <iostream>
+#include "string.h"
+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_imsubtract(char *fname, unsigned long fname_len)
+  {
+    SciErr sciErr;
+    Mat A,B,C;
+    int* piAddr2=NULL;
+    int iType = 0;
+    int iRet    = 0;
+    double value= 0;
+    CheckInputArgument(pvApiCtx, 2, 2);
+    CheckOutputArgument(pvApiCtx, 1, 1);
+    retrieveImage(A,1);
+    sciErr =getVarAddressFromPosition(pvApiCtx,2,&piAddr2);
+    sciErr = getVarType(pvApiCtx, piAddr2, &iType);
+    if(iType==sci_list)
+    {
+       retrieveImage(B,2);
+       Size s1=A.size();
+       Size s2=B.size();
+       if(s1!=s2)
+        { 
+          sciprint("\nBoth input should be same size");
+          return 0;
+        }
+       subtract(A,B,C);
+    }
+    else
+    {
+      if(isDoubleType(pvApiCtx, piAddr2))
+       {
+	 if(isScalar(pvApiCtx, piAddr2))
+	   {
+	      iRet = getScalarDouble(pvApiCtx, piAddr2, &value);
+           }
+       } 
+      subtract(A,value,C);
+    }  
+    
+    int temp = nbInputArgument(pvApiCtx) + 1;
+    string tempstring = type2str(C.type());
+    char *checker;
+    checker = (char *)malloc(tempstring.size() + 1);
+    memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
+    returnImage(checker,C,1);
+    free(checker); 
+    AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
+    ReturnArguments(pvApiCtx);
+    return 0;
+  }
+}