1 files changed, 69 insertions, 0 deletions
diff --git a/sci_gateway1/cpp/opencv_IFFT.cpp b/sci_gateway1/cpp/opencv_IFFT.cpp
new file mode 100644
index 0000000..6bbbcbc
--- /dev/null
+++ b/sci_gateway1/cpp/opencv_IFFT.cpp
@@ -0,0 +1,69 @@
+/********************************************************
+Author: Diwakar
+return_image = IFFT(source_image)
+********************************************************/
+
+#include <numeric>
+#include "opencv2/core/core.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/opencv.hpp"
+#include <iostream>
+#include <vector>
+
+using namespace cv;
+using namespace std;
+
+extern "C"{
+  #include "api_scilab.h"
+  #include "Scierror.h"
+  #include "BOOL.h"
+  #include <localization.h>
+  #include "../common.h"
+  
+  int opencv_IFFT(char *fname, unsigned long fname_len){
+
+    /// Error management variable
+    SciErr sciErr;
+    
+    /// Variables
+    int i, j;
+   
+
+    /// checking input argument
+    CheckInputArgument(pvApiCtx, 1, 1);
+    CheckOutputArgument(pvApiCtx, 1, 1);
+
+
+    Mat img;
+    retrieveImage(img, 1);
+
+    if(img.channels()>2){
+          Scierror(999, "Input should be single or double channel\n"); 
+          return 0; 
+    }
+    Mat planes[] = {Mat_<float>(img), Mat::zeros(img.size(), CV_32F)};
+    Mat complexI;
+    merge(planes, 2, complexI);
+    dft(complexI, complexI);
+    Mat invDFT, invDFTcvt;
+    idft(complexI, invDFT, DFT_SCALE | DFT_REAL_OUTPUT );
+    invDFT.convertTo(invDFTcvt, CV_8U); 
+  
+    string tempstring = type2str(invDFTcvt.type());
+    char *checker;
+    checker = (char *)malloc(tempstring.size() + 1);
+    memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
+    returnImage(checker,invDFTcvt, 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;
+
+  }
+/* ==================================================================== */
+}
+