ViSP  2.8.0
tutorial-grabber-opencv-bis.cpp
#include <stdlib.h>
#include <visp/vpDisplayOpenCV.h>
#include <visp/vpImageConvert.h>
// usage: binary <device name>
// device name: 0 is the default to dial with the first camera,
// 1 to dial with a second camera attached to the computer
int main(int argc, char** argv)
{
int device = 0;
if (argc > 1)
device = atoi(argv[1]);
std::cout << "Use device: " << device << std::endl;
#if defined(VISP_HAVE_OPENCV) && (VISP_HAVE_OPENCV_VERSION >= 0x020100)
cv::VideoCapture cap(device); // open the default camera
if(!cap.isOpened()) { // check if we succeeded
std::cout << "Failed to open the camera" << std::endl;
return -1;
}
cv::Mat frame;
cap >> frame; // get a new frame from camera
std::cout << "Image size: " << frame.rows << " " << frame.cols << std::endl;
//vpImage<vpRGBa> I; // for color images
vpImage<unsigned char> I; // for gray images
for(;;) {
cap >> frame; // get a new frame from camera
// Convert the image in ViSP format and display it
if (vpDisplay::getClick(I, false)) // a click to exit
break;
}
#endif
}