Re: OpenCV and libdc1394

--- In OpenCV@xxxxxxxxxxxxxxx, Mark Asbach <asbach@...> wrote:
>
> Hi Cornelius,
> 
> > I want to use libdc1394 to grab images from my imitech-1394 camera
> > into OpenCV.
> 
> One question on your setup: Do you call libdc1394 yourself or do you  
> use HighGUI configured with libdc1394?
> 
> > Is there any easy way to make OpenCV and libdc1394 work properly  
> > together?
> 
> Didn't try myself, but it is meant to work together ... May be you  
> should contact the authors of cvcap_dc1394.cpp directly (email  
> addresses are given in the source code).
> 
> Yours, Mark
> -- 
>    Dipl.-Ing. Mark Asbach                      Tel +49 (0)241 80-27677
>    Institute of Communications Engineering     Fax +49 (0)241 80-22196
>    RWTH Aachen University, Germany      http://www.ient.rwth-aachen.de
>

I admitadly don't fully understand how lib1394 stuff works but I am
using it along with openCV 9.7. I've written a wrappers class for the
lib1394 functions that I have had very good luck with so far. You may
need to change some of the #defines for your cameras but you can get
it here 

www.cs.rpi.edu/~meisne/camfwire.tgz 

along with other scrounged-up/hacked-together code that might be usefull. 

here's and example of how you might use it:

#include "camfwire.h"
#include <cv.h>

//allocate storage for the image
rgbBuffer0 = new unsigned char[3 * bufferSize]; 
rgbBuffer1 = new unsigned char[3 * bufferSize];

//Set up the cameras
FWCam *fwCamera0 = new FWCam( 0 , rgbBuffer0 );
FMCam *fwCamera1 = new FWCam( 1 , rgbBuffer1 );
fwCamera0->init(); //open the ports
fwCamera1->init();

IplImage* LeftImage;
IplImage* RightImage;

.........

//Read a frame
fwCamera0->grabFrame();
fwCamera1->grabFrame();

//Convert to an IplImage
cvSetImageData(LeftImage ,  fwCamera0->imagePtr, imgSize.width*3);
cvSetImageData(RightImage,  fwCamera1->imagePtr, imgSize.width*3);

-EM









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