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//! \example tutorial-barcode-detector.cpp
//! [Include]
#include <visp3/detection/vpDetectorDataMatrixCode.h>
#include <visp3/detection/vpDetectorQRCode.h>
//! [Include]
#include <visp3/gui/vpDisplayFactory.h>
#include <visp3/io/vpImageIo.h>
int main(int argc, const char **argv)
{
//! [Macro defined]
#if (defined(VISP_HAVE_ZBAR) || defined(VISP_HAVE_DMTX)) && \
defined(VISP_HAVE_DISPLAY)
//! [Macro defined]
#ifdef ENABLE_VISP_NAMESPACE
using namespace VISP_NAMESPACE_NAME;
#endif
#if (VISP_CXX_STANDARD >= VISP_CXX_STANDARD_11)
std::shared_ptr<vpDisplay> display;
#else
vpDisplay *display = nullptr;
#endif
try {
vpImage<unsigned char> I;
vpImageIo::read(I, "bar-code.jpg");
#if (VISP_CXX_STANDARD >= VISP_CXX_STANDARD_11)
display = vpDisplayFactory::createDisplay(I);
#else
display = vpDisplayFactory::allocateDisplay(I);
#endif
//! [Create base detector]
vpDetectorBase *detector = nullptr;
//! [Create base detector]
#if (defined(VISP_HAVE_ZBAR) && defined(VISP_HAVE_DMTX))
int opt_barcode = 0; // 0=QRCode, 1=DataMatrix
for (int i = 1; i < argc; i++) {
if (std::string(argv[i]) == "--code-type" && i + 1 < argc) {
opt_barcode = atoi(argv[++i]);
}
else if (std::string(argv[i]) == "--help" || std::string(argv[i]) == "-h") {
std::cout << "Usage: " << argv[0] << " [--code-type <0 for QR code | 1 for DataMatrix code>] [--help] [-h]"
<< std::endl;
return EXIT_SUCCESS;
}
}
//! [Create detector]
if (opt_barcode == 0)
detector = new vpDetectorQRCode;
else
detector = new vpDetectorDataMatrixCode;
//! [Create detector]
#elif defined(VISP_HAVE_ZBAR)
detector = new vpDetectorQRCode;
(void)argc;
(void)argv;
#elif defined(VISP_HAVE_DMTX)
detector = new vpDetectorDataMatrixCode;
(void)argc;
(void)argv;
#endif
vpDisplay::display(I);
//! [Detection]
bool status = detector->detect(I);
//! [Detection]
std::ostringstream legend;
legend << detector->getNbObjects() << " bar code detected";
vpDisplay::displayText(I, static_cast<int>(I.getHeight()) - 30, 10, legend.str(), vpColor::red);
//! [Parse detected codes]
if (status) {
for (size_t i = 0; i < detector->getNbObjects(); i++) {
//! [Parse detected codes]
//! [Get location]
std::vector<vpImagePoint> p = detector->getPolygon(i);
vpRect bbox = detector->getBBox(i);
//! [Get location]
vpDisplay::displayRectangle(I, bbox, vpColor::green);
//! [Get message]
vpDisplay::displayText(I, static_cast<int>(bbox.getTop() - 10), static_cast<int>(bbox.getLeft()),
"Message: \"" + detector->getMessage(i) + "\"", vpColor::red);
//! [Get message]
for (size_t j = 0; j < p.size(); j++) {
vpDisplay::displayCross(I, p[j], 14, vpColor::red, 3);
std::ostringstream number;
number << j;
vpDisplay::displayText(I, p[j] + vpImagePoint(15, 5), number.str(), vpColor::blue);
}
}
vpDisplay::displayText(I, static_cast<int>(I.getHeight()) - 15, 10, "A click to quit...", vpColor::red);
vpDisplay::flush(I);
vpDisplay::getClick(I);
}
delete detector;
}
catch (const vpException &e) {
std::cout << "Catch an exception: " << e.getMessage() << std::endl;
}
#if (VISP_CXX_STANDARD < VISP_CXX_STANDARD_11)
if (display != nullptr) {
delete display;
}
#endif
#else
(void)argc;
(void)argv;
#endif
}
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