Visual Servoing Platform  version 3.4.1 under development (2021-06-21)
tutorial-image-converter.cpp
#include <visp3/core/vpImageConvert.h>
#include <visp3/io/vpImageIo.h>
int main()
{
#if defined(VISP_HAVE_OPENCV) && (VISP_HAVE_OPENCV_VERSION >= 0x020100)
try {
cv::Mat A;
#if VISP_HAVE_OPENCV_VERSION >= 0x030200
int flags = cv::IMREAD_GRAYSCALE | cv::IMREAD_IGNORE_ORIENTATION;
#elif VISP_HAVE_OPENCV_VERSION >= 0x030000
int flags = cv::IMREAD_GRAYSCALE;
#elif VISP_HAVE_OPENCV_VERSION >= 0x020100
int flags = CV_LOAD_IMAGE_GRAYSCALE;
#endif
A = cv::imread("monkey.bmp", flags);
#ifdef VISP_HAVE_PNG
vpImageIo::write(I, "monkey.png"); // Gray
#endif
} catch (const vpException &e) {
std::cout << "Catch an exception: " << e << std::endl;
}
#endif
}