git.maemo.org Git - opencv/blob - samples/c/laplace.c

   1 #ifdef _CH_
   2 #pragma package <opencv>
   3 #endif
   4
   5 #ifndef _EiC
   6 #include "cv.h"
   7 #include "highgui.h"
   8 #include <ctype.h>
   9 #include <stdio.h>
  10 #endif
  11
  12 int main( int argc, char** argv )
  13 {
  14     IplImage* laplace = 0;
  15     IplImage* colorlaplace = 0;
  16     IplImage* planes[3] = { 0, 0, 0 };
  17     CvCapture* capture = 0;
  18
  19     if( argc == 1 || (argc == 2 && strlen(argv[1]) == 1 && isdigit(argv[1][0])))
  20         capture = cvCaptureFromCAM( argc == 2 ? argv[1][0] - '0' : 0 );
  21     else if( argc == 2 )
  22         capture = cvCaptureFromAVI( argv[1] );
  23
  24     if( !capture )
  25     {
  26         fprintf(stderr,"Could not initialize capturing...\n");
  27         return -1;
  28     }
  29
  30     cvNamedWindow( "Laplacian", 0 );
  31
  32     for(;;)
  33     {
  34         IplImage* frame = 0;
  35         int i;
  36
  37         frame = cvQueryFrame( capture );
  38         if( !frame )
  39             break;
  40
  41         if( !laplace )
  42         {
  43             for( i = 0; i < 3; i++ )
  44                 planes[i] = cvCreateImage( cvSize(frame->width,frame->height), 8, 1 );
  45             laplace = cvCreateImage( cvSize(frame->width,frame->height), IPL_DEPTH_16S, 1 );
  46             colorlaplace = cvCreateImage( cvSize(frame->width,frame->height), 8, 3 );
  47         }
  48
  49         cvCvtPixToPlane( frame, planes[0], planes[1], planes[2], 0 );
  50         for( i = 0; i < 3; i++ )
  51         {
  52             cvLaplace( planes[i], laplace, 3 );
  53             cvConvertScaleAbs( laplace, planes[i], 1, 0 );
  54         }
  55         cvCvtPlaneToPix( planes[0], planes[1], planes[2], 0, colorlaplace );
  56         colorlaplace->origin = frame->origin;
  57
  58         cvShowImage("Laplacian", colorlaplace );
  59
  60         if( cvWaitKey(10) >= 0 )
  61             break;
  62     }
  63
  64     cvReleaseCapture( &capture );
  65     cvDestroyWindow("Laplacian");
  66
  67     return 0;
  68 }
  69
  70 #ifdef _EiC
  71 main(1,"laplace.c");
  72 #endif