View difference between Paste ID: 4aBbefiz and p3tefuHW

 #ifdef _CH_
 #pragma package <opencv>
 #endif
 
 #define CV_NO_BACKWARD_COMPATIBILITY
 
 #ifndef _EiC
 #include "cv.h"
 #include "highgui.h"
 #include <stdio.h>
 #include <ctype.h>
 #endif
 
 IplImage *image = 0, *hsv = 0, *hue = 0, *mask = 0, *backproject = 0, *histimg = 0;
 CvHistogram *hist = 0;
 CvArr *traj;
 
 int backproject_mode = 0;
 int select_object = 0;
 int track_object = 0;
 int show_hist = 1;
 CvPoint origin;
 CvRect selection;
 CvRect track_window;
 CvBox2D track_box;
 CvConnectedComp track_comp;
 CvPoint p1;
 CvPoint p2;
 int hdims = 16;
 float hranges_arr[] = {0,180};
 float* hranges = hranges_arr;
 int vmin = 10, vmax = 256, smin = 30;
 
 void on_mouse( int event, int x, int y, int flags, void* param )
 {
     if( !image )
         return;
 
     if( image->origin )
         y = image->height - y;
 
     if( select_object )
     {
         selection.x = MIN(x,origin.x);
         selection.y = MIN(y,origin.y);
         selection.width = selection.x + CV_IABS(x - origin.x);
         selection.height = selection.y + CV_IABS(y - origin.y);
 
         selection.x = MAX( selection.x, 0 );
         selection.y = MAX( selection.y, 0 );
         selection.width = MIN( selection.width, image->width );
         selection.height = MIN( selection.height, image->height );
         selection.width -= selection.x;
         selection.height -= selection.y;
     }
 
     switch( event )
     {
     case CV_EVENT_LBUTTONDOWN:
         origin = cvPoint(x,y);
         selection = cvRect(x,y,0,0);
         select_object = 1;
         break;
     case CV_EVENT_LBUTTONUP:
         select_object = 0;
         if( selection.width > 0 && selection.height > 0 )
             track_object = -1;
         break;
     }
 }
 
 
 CvScalar hsv2rgb( float hue )
 {
     int rgb[3], p, sector;
     static const int sector_data[][3]=
         {{0,2,1}, {1,2,0}, {1,0,2}, {2,0,1}, {2,1,0}, {0,1,2}};
     hue *= 0.033333333333333333333333333333333f;
     sector = cvFloor(hue);
     p = cvRound(255*(hue - sector));
     p ^= sector & 1 ? 255 : 0;
 
     rgb[sector_data[sector][0]] = 255;
     rgb[sector_data[sector][1]] = 0;
     rgb[sector_data[sector][2]] = p;
 
     return cvScalar(rgb[2], rgb[1], rgb[0],0);
 }
 
 int main( int argc, char** argv )
 {
 	//p1.x = 0;
 	//p1.y = 0;
     CvCapture* capture = 0;
 
     if( argc == 1 || (argc == 2 && strlen(argv[1]) == 1 && isdigit(argv[1][0])))
         capture = cvCaptureFromCAM( argc == 2 ? argv[1][0] - '0' : 0 );
     else if( argc == 2 )
         capture = cvCaptureFromAVI( argv[1] );
 
     if( !capture )
     {
         fprintf(stderr,"Could not initialize capturing...\n");
         return -1;
     }
     printf( "Hot keys: \n"
         "\tESC - quit the program\n"
         "\tc - stop the tracking\n"
         "\tb - switch to/from backprojection view\n"
         "\th - show/hide object histogram\n"
         "To initialize tracking, select the object with mouse\n" );
 
     cvNamedWindow( "Histogram", 1 );
     cvNamedWindow( "CamShiftDemo", 1 );
 	cvNamedWindow( "Trajektoria", 1 );
     cvSetMouseCallback( "CamShiftDemo", on_mouse, 0 );
     cvCreateTrackbar( "Vmin", "CamShiftDemo", &vmin, 256, 0 );
     cvCreateTrackbar( "Vmax", "CamShiftDemo", &vmax, 256, 0 );
     cvCreateTrackbar( "Smin", "CamShiftDemo", &smin, 256, 0 );
 
     for(;;)
     {
         IplImage* frame = 0;
         int i, bin_w, c;
 
         frame = cvQueryFrame( capture );
         if( !frame )
             break;
 
         if( !image )
         {
             /* allocate all the buffers */
             image = cvCreateImage( cvGetSize(frame), 8, 3 );
             image->origin = frame->origin;
             hsv = cvCreateImage( cvGetSize(frame), 8, 3 );
             hue = cvCreateImage( cvGetSize(frame), 8, 1 );
             mask = cvCreateImage( cvGetSize(frame), 8, 1 );
             backproject = cvCreateImage( cvGetSize(frame), 8, 1 );
             hist = cvCreateHist( 1, &hdims, CV_HIST_ARRAY, &hranges, 1 );
             histimg = cvCreateImage( cvSize(320,200), 8, 3 );
             cvZero( histimg );
 			traj = cvCreateImage( cvGetSize(frame), 8, 3 );
         }
 
         cvCopy( frame, image, 0 );
         cvCvtColor( image, hsv, CV_BGR2HSV );
 
         if( track_object )
         {
             int _vmin = vmin, _vmax = vmax;
 
             cvInRangeS( hsv, cvScalar(0,smin,MIN(_vmin,_vmax),0),
                         cvScalar(180,256,MAX(_vmin,_vmax),0), mask );
             cvSplit( hsv, hue, 0, 0, 0 );
 
             if( track_object < 0 )
             {
                 float max_val = 0.f;
                 cvSetImageROI( hue, selection );
                 cvSetImageROI( mask, selection );
                 cvCalcHist( &hue, hist, 0, mask );
                 cvGetMinMaxHistValue( hist, 0, &max_val, 0, 0 );
                 cvConvertScale( hist->bins, hist->bins, max_val ? 255. / max_val : 0., 0 );
                 cvResetImageROI( hue );
                 cvResetImageROI( mask );
                 track_window = selection;
                 track_object = 1;
 
                 cvZero( histimg );
                 bin_w = histimg->width / hdims;
                 for( i = 0; i < hdims; i++ )
                 {
                     int val = cvRound( cvGetReal1D(hist->bins,i)*histimg->height/255 );
                     CvScalar color = hsv2rgb(i*180.f/hdims);
                     cvRectangle( histimg, cvPoint(i*bin_w,histimg->height),
                                  cvPoint((i+1)*bin_w,histimg->height - val),
                                  color, -1, 8, 0 );
                 }
             }
 
             cvCalcBackProject( &hue, backproject, hist );
             cvAnd( backproject, mask, backproject, 0 );
             cvCamShift( backproject, track_window,
                         cvTermCriteria( CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 10, 1 ),
                         &track_comp, &track_box );
             track_window = track_comp.rect;
 
             if( backproject_mode )
                 cvCvtColor( backproject, image, CV_GRAY2BGR );
             if( !image->origin )
                 track_box.angle = -track_box.angle;
             cvEllipseBox( image, track_box, CV_RGB(255,0,0), 3, CV_AA, 0 );
         }
 
         if( select_object && selection.width > 0 && selection.height > 0 )
         {
             cvSetImageROI( image, selection );
             cvXorS( image, cvScalarAll(255), image, 0 );
             cvResetImageROI( image );
         }
 
         cvShowImage( "CamShiftDemo", image );
         cvShowImage( "Histogram", histimg );
 		p2.x = track_comp.rect.x;
 		p2.y = track_comp.rect.y;
 		cvLine(traj, p1, p2, CV_RGB(255,0,0), 1, 8, 0);
 		cvShowImage( "Trajektoria", traj);
 		p1 = p2;
 
         c = cvWaitKey(10);
         if( (char) c == 27 )
             break;
         switch( (char) c )
         {
         case 'b':
             backproject_mode ^= 1;
             break;
         case 'c':
             track_object = 0;
             cvZero( histimg );
             break;
         case 'h':
             show_hist ^= 1;
             if( !show_hist )
                 cvDestroyWindow( "Histogram" );
             else
                 cvNamedWindow( "Histogram", 1 );
             break;
         default:
             ;
         }
     }
 
     cvReleaseCapture( &capture );
     cvDestroyWindow("CamShiftDemo");
 
     return 0;
 }
 
 #ifdef _EiC
 main(1,"camshiftdemo.c");
 #endif