moved to cpp directory

samples/cpp/bgfg_segm.cpp

+#include <opencv2/video/background_segm.hpp>
+#include <opencv2/highgui/highgui.hpp>
+
+#include <stdio.h>
+
+//this is a sample for foreground detection functions
+int main(int argc, char** argv)
+{
+    IplImage*       tmp_frame = NULL;
+    CvCapture*      cap = NULL;
+    bool update_bg_model = true;
+
+    if( argc < 2 )
+        cap = cvCaptureFromCAM(0);
+    else
+        cap = cvCaptureFromFile(argv[1]);
+    
+    if( !cap )
+    {
+        printf("can not open camera or video file\n");
+        return -1;
+    }
+    
+    tmp_frame = cvQueryFrame(cap);
+    if(!tmp_frame)
+    {
+        printf("can not read data from the video source\n");
+        return -1;
+    }
+
+    cvNamedWindow("BG", 1);
+    cvNamedWindow("FG", 1);
+
+    CvBGStatModel* bg_model = 0;
+    
+    for( int fr = 1;tmp_frame; tmp_frame = cvQueryFrame(cap), fr++ )
+    {
+        if(!bg_model)
+        {
+            //create BG model
+            bg_model = cvCreateGaussianBGModel( tmp_frame );
+            //bg_model = cvCreateFGDStatModel( temp );
+            continue;
+        }
+        
+        double t = (double)cvGetTickCount();
+        cvUpdateBGStatModel( tmp_frame, bg_model, update_bg_model ? -1 : 0 );
+        t = (double)cvGetTickCount() - t;
+        printf( "%d. %.1f\n", fr, t/(cvGetTickFrequency()*1000.) );
+        cvShowImage("BG", bg_model->background);
+        cvShowImage("FG", bg_model->foreground);
+        char k = cvWaitKey(5);
+        if( k == 27 ) break;
+        if( k == ' ' )
+            update_bg_model = !update_bg_model;
+    }
+
+
+    cvReleaseBGStatModel( &bg_model );
+    cvReleaseCapture(&cap);
+
+    return 0;
+}