Load from Webcam

Feb 28, 2011 by admin    No Comments    Posted under: Programming

Get live feed from Webcam

/*
 *      Author: Dimitrios Prodromou
 *      office@robotas.at
 */
 
#include <stdlib.h>
#include <stdio.h>
#include <opencv/cv.h>
#include <opencv/highgui.h>
 
int main()
 {
 // A Simple Camera Capture Framework
 
CvCapture* capture = cvCaptureFromCAM( 0 );
 if( !capture )
 {
 fprintf( stderr, "ERROR: capture is NULL \n" );
 getchar();
 return -1;
 }
 // Create a window in which the captured images will be presented
 cvNamedWindow( "mywindow", CV_WINDOW_AUTOSIZE );
 // Show the image captured from the camera in the window and repeat
 while( 1 )
 {
 // Get one frame
 IplImage* frame = cvQueryFrame( capture );
 if( !frame )
 {
 fprintf( stderr, "ERROR: frame is null...\n" );
 getchar();
 break;
 }
 cvShowImage( "mywindow", frame );
 // Do not release the frame!
 //If ESC key pressed, Key=0x10001B under OpenCV 0.9.7(linux version),
 //remove higher bits using AND operator
 if( (cvWaitKey(10) & 255) == 27 )
 break;
 }    // Release the capture device housekeeping
 cvReleaseCapture( &capture );
 cvDestroyWindow( "mywindow" );
 return 0;
 }

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