simple question:starting with open cv

asked 2016-11-14 13:26:49 -0500

updated 2016-11-14 13:33:08 -0500

LBerger gravatar image

Hi, I am testing open cv with this simple code:

#include <stdio.h>  
// A Simple Camera Capture Framework 
int main() {
  CvCapture* capture = cvCaptureFromCAM( CV_CAP_ANY );
  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;
}

I build it, then I get this message:

1> stdafx.cpp 1> aver.cpp 1>aver.obj : warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/INCREMENTAL:NO' specification 1> aver.vcxproj -> C:\Users\user\Documents\Visual Studio 2010\Projects\aver_FULL - copia\Debug\aver.exe ========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========

Then I press F5+Ctrl and the console windows opens, and shows a message: press to continue, I press and it stops... Why is that? Is it a problem with my PC? Thanks!

edit retag flag offensive close merge delete

Comments

To format code in ths forum you must use icon 101010.

If you start with opencv you should use last version opencv 3.1 with c++ interface

LBerger gravatar imageLBerger ( 2016-11-14 13:36:03 -0500 )edit
1

your "simple code" is unfortunately horribly outdated, opencv moved away from that c-api style in 2010 already.

please throw it all away, and restart by reading current tutorials

berak gravatar imageberak ( 2016-11-14 18:54:41 -0500 )edit
1

OK thank you! Open cv 3 with Ubuntu was great.Now 2.3.1 version with windows, it only gives me one problem after another... The main reason for using that version is because I was working with a code ( Arduino and C++ ) already written on that version. Will keep on trying!

polenorth1 gravatar imagepolenorth1 ( 2016-11-14 20:22:20 -0500 )edit