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06/02/2009 at 05:22PM PDT, ID: 24458586
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7.0

cvCaptureFromCAM() for multiple cameras in opencv

Asked by rxzang in C++ Programming Language, Computer Web Cameras, Open Source Programming

Tags: cvCaptureFromCAM opencv

In opencv (windows), I want to switch from different cameras (I have 3 fire-i cameras).

But it seems that it can only use cvCaptureFromCAM(0) or cvCaptureFromCAM(-1) to get the input.

It get NULL for all other index>0. such as cvCaptureFromCAM(1).

The code is pasted below:
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/// camera is a input variable to choose which camera to open
 
if (cameraindex=0)
{
CvCapture* capture = cvCaptureFromCAM( 0 );
}
 
else if (cameraindex=1)
{
CvCapture* capture = cvCaptureFromCAM( 1 );
}
 
else if (cameraindex=2)
{
CvCapture* capture = cvCaptureFromCAM( 2 );
}
 
Keywords: cvCaptureFromCAM() for multiple ca…
 
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[+][-]06/02/09 05:24 PM, ID: 24532600

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[+][-]06/03/09 11:44 AM, ID: 24539764

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About this solution

Zones: C++ Programming Language, Computer Web Cameras, Open Source Programming
Tags: cvCaptureFromCAM opencv
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Solution Provided By: jkr
Participating Experts: 1
Solution Grade: A
 
 
[+][-]06/03/09 03:29 PM, ID: 24541995

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[+][-]06/03/09 03:55 PM, ID: 24542163

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[+][-]06/03/09 04:42 PM, ID: 24542482

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[+][-]06/03/09 07:54 PM, ID: 24543217

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[+][-]06/04/09 11:12 AM, ID: 24549716

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[+][-]06/04/09 12:00 PM, ID: 24550217

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[+][-]06/04/09 12:16 PM, ID: 24550405

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