Thanks for mentioning our project ;)

To show you, how easy it is, to access video-devices (using video4linux), have a look at this code:

#include <fstream>
#include <GL/glut.h>
#include "image_v4linput.h"
#include "image_mesaoutput.h"
using namespace std;
using namespace mimas;
// Minimal program for accessing the video-device and displaying the
// captured frames.
int main( int argc, char *argv[] )
{
  int retVal = 0;
  try {
    glutInit( &argc, argv );
    x11_display display;
    image_v4linput< rgba< unsigned char > > input( "/dev/video0" );
    image_mesaoutput< rgba< unsigned char > > window( &display );
    image< rgba< unsigned char > > img;
    while ( input ) {
      input >> img;
      window << img;
    };
  } catch ( exception &e ) {
    cerr << e.what() << endl;
    retVal = 1;
  };
  return retVal;
}

In a similar fashion one can do fourier-transforms, edge-detection, linear-algebra, convolutions and element-wise operations.