Visual Servoing Platform  version 3.2.0 under development (2018-08-16)
tutorial-face-detector.cpp
#include <visp3/gui/vpDisplayGDI.h>
#include <visp3/gui/vpDisplayOpenCV.h>
#include <visp3/gui/vpDisplayX.h>
#include <visp3/detection/vpDetectorFace.h>
#include <visp3/io/vpVideoReader.h>
int main(int argc, const char *argv[])
{
#if defined(VISP_HAVE_OPENCV) && (VISP_HAVE_OPENCV_VERSION >= 0x020200)
try {
std::string opt_face_cascade_name = "./haarcascade_frontalface_alt.xml";
std::string opt_video = "video.mpeg";
for (int i = 0; i < argc; i++) {
if (std::string(argv[i]) == "--haar")
opt_face_cascade_name = std::string(argv[i + 1]);
else if (std::string(argv[i]) == "--video")
opt_video = std::string(argv[i + 1]);
else if (std::string(argv[i]) == "--help") {
std::cout << "Usage: " << argv[0]
<< " [--haar <haarcascade xml filename>] [--video <input "
"video file>] [--help]"
<< std::endl;
return 0;
}
}
g.setFileName(opt_video);
g.open(I);
#if defined(VISP_HAVE_X11)
vpDisplayX d(I);
#elif defined(VISP_HAVE_GDI)
#elif defined(VISP_HAVE_OPENCV)
#endif
vpDisplay::setTitle(I, "ViSP viewer");
vpDetectorFace face_detector;
face_detector.setCascadeClassifierFile(opt_face_cascade_name);
bool exit_requested = false;
while (!g.end() && !exit_requested) {
g.acquire(I);
bool face_found = face_detector.detect(I);
if (face_found) {
std::ostringstream text;
text << "Found " << face_detector.getNbObjects() << " face(s)";
vpDisplay::displayText(I, 10, 10, text.str(), vpColor::red);
for (size_t i = 0; i < face_detector.getNbObjects(); i++) {
vpRect bbox = face_detector.getBBox(i);
vpDisplay::displayText(I, (int)bbox.getTop() - 10, (int)bbox.getLeft(),
"Message: \"" + face_detector.getMessage(i) + "\"", vpColor::red);
}
}
vpDisplay::displayText(I, (int)I.getHeight() - 25, 10, "Click to quit...", vpColor::red);
if (vpDisplay::getClick(I, false)) // a click to exit
exit_requested = true;
}
if (!exit_requested)
} catch (const vpException &e) {
std::cout << e.getMessage() << std::endl;
}
#else
(void)argc;
(void)argv;
#endif
}