Visual Servoing Platform  version 3.6.1 under development (2024-10-15)
manGrabDirectShow.cpp

Images grabbing example with the vpDirectShowGrabber class.

/****************************************************************************
*
* ViSP, open source Visual Servoing Platform software.
* Copyright (C) 2005 - 2023 by Inria. All rights reserved.
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* This software was developed at:
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* Campus Universitaire de Beaulieu
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*
* Description:
* Images grabbing example.
*
*****************************************************************************/
#include <visp3/core/vpConfig.h>
#include <visp3/core/vpImage.h>
#include <visp3/sensor/vpDirectShowGrabber.h>
int main()
{
#ifdef ENABLE_VISP_NAMESPACE
using namespace VISP_NAMESPACE_NAME;
#endif
try {
vpImage<unsigned char> I; // Grey level image
#ifdef VISP_HAVE_DIRECTSHOW
vpDirectShowGrabber g; // Create the grabber
if (g.getDeviceNumber() == 0) // test if a camera is connected
{
g.close();
return EXIT_FAILURE;
}
g.open(); // Initialize the grabber
g.setImageSize(640, 480); // If the camera supports 640x480 image size
g.setFramerate(30); // If the camera supports 30fps framerate
for (;;)
g.acquire(I); // Acquire an image
#endif
return EXIT_SUCCESS;
}
catch (const vpException &e) {
std::cout << "Catch an exception: " << e << std::endl;
return EXIT_FAILURE;
}
}
class for windows direct show devices
void acquire(vpImage< unsigned char > &I)
unsigned int getDeviceNumber()
bool setImageSize(unsigned int width, unsigned int height)
bool setFramerate(double framerate)
error that can be emitted by ViSP classes.
Definition: vpException.h:60