samples/c/polar_transforms.c

   1 #include "opencv2/imgproc/imgproc.hpp"
   2 #include "opencv2/highgui/highgui.hpp"
   3
   4 #include <ctype.h>
   5 #include <stdio.h>
   6
   7 int main( int argc, char** argv )
   8 {
   9     CvCapture* capture = 0;
  10     IplImage*  log_polar_img = 0;
  11     IplImage*  lin_polar_img = 0;
  12     IplImage*  recovered_img = 0;
  13
  14     if( argc == 1 || (argc == 2 && strlen(argv[1]) == 1 && isdigit(argv[1][0])))
  15         capture = cvCaptureFromCAM( argc == 2 ? argv[1][0] - '0' : 0 );
  16     else if( argc == 2 )
  17         capture = cvCaptureFromAVI( argv[1] );
  18
  19     if( !capture )
  20     {
  21         fprintf(stderr,"Could not initialize capturing...\n");
  22         fprintf(stderr,"Usage: %s <CAMERA_NUMBER>    , or \n       %s <VIDEO_FILE>\n",argv[0],argv[0]);
  23         return -1;
  24     }
  25
  26     cvNamedWindow( "Linear-Polar", 0 );
  27     cvNamedWindow( "Log-Polar", 0 );
  28     cvNamedWindow( "Recovered image", 0 );
  29
  30     cvMoveWindow( "Linear-Polar", 20,20 );
  31     cvMoveWindow( "Log-Polar", 700,20 );
  32     cvMoveWindow( "Recovered image", 20,700 );
  33
  34     for(;;)
  35     {
  36         IplImage* frame = 0;
  37
  38         frame = cvQueryFrame( capture );
  39         if( !frame )
  40             break;
  41
  42         if( !log_polar_img )
  43         {
  44             log_polar_img = cvCreateImage( cvSize(frame->width,frame->height), IPL_DEPTH_8U, frame->nChannels );
  45             lin_polar_img = cvCreateImage( cvSize(frame->width,frame->height), IPL_DEPTH_8U, frame->nChannels );
  46             recovered_img = cvCreateImage( cvSize(frame->width,frame->height), IPL_DEPTH_8U, frame->nChannels );
  47         }
  48
  49         cvLogPolar(frame,log_polar_img,cvPoint2D32f(frame->width >> 1,frame->height >> 1),70, CV_INTER_LINEAR+CV_WARP_FILL_OUTLIERS);
  50         cvLinearPolar(frame,lin_polar_img,cvPoint2D32f(frame->width >> 1,frame->height >> 1),70, CV_INTER_LINEAR+CV_WARP_FILL_OUTLIERS);
  51
  52 #if 0
  53                 cvLogPolar(log_polar_img,recovered_img,cvPoint2D32f(frame->width >> 1,frame->height >> 1),70, CV_WARP_INVERSE_MAP+CV_INTER_LINEAR);
  54 #else
  55         cvLinearPolar(lin_polar_img,recovered_img,cvPoint2D32f(frame->width >> 1,frame->height >> 1),70, CV_WARP_INVERSE_MAP+CV_INTER_LINEAR+CV_WARP_FILL_OUTLIERS);
  56 #endif
  57
  58         cvShowImage("Log-Polar", log_polar_img );
  59         cvShowImage("Linear-Polar", lin_polar_img );
  60         cvShowImage("Recovered image", recovered_img );
  61
  62         if( cvWaitKey(10) >= 0 )
  63             break;
  64     }
  65
  66     cvReleaseCapture( &capture );
  67     cvDestroyWindow("Linear-Polar");
  68     cvDestroyWindow("Log-Polar");
  69     cvDestroyWindow("Recovered image");
  70
  71     return 0;
  72 }
  73
  74 #ifdef _EiC
  75 main(1,"laplace.c");
  76 #endif