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//! \example tutorial-autothreshold.cpp
#include <cstdlib>
#include <iostream>
#include <visp3/core/vpConfig.h>
#include <visp3/core/vpImage.h>
#include <visp3/gui/vpDisplayFactory.h>
#include <visp3/io/vpImageIo.h>
#if defined(VISP_HAVE_MODULE_IMGPROC)
//! [Include]
#include <visp3/imgproc/vpImgproc.h>
//! [Include]
#endif
int main(int argc, const char **argv)
{
//! [Macro defined]
#if defined(VISP_HAVE_MODULE_IMGPROC) && defined(VISP_HAVE_DISPLAY)
//! [Macro defined]
//!
#ifdef ENABLE_VISP_NAMESPACE
using namespace VISP_NAMESPACE_NAME;
#endif
std::string input_filename = "grid36-03.pgm";
for (int i = 1; i < argc; i++) {
if (std::string(argv[i]) == "--input" && i + 1 < argc) {
input_filename = std::string(argv[i + 1]);
}
else if (std::string(argv[i]) == "--help" || std::string(argv[i]) == "-h") {
std::cout << "Usage: " << argv[0] << " [--input <input image>] [--help]" << std::endl;
return EXIT_SUCCESS;
}
}
vpImage<unsigned char> I;
vpImageIo::read(I, input_filename);
vpImage<unsigned char> I_res(3 * I.getHeight(), 3 * I.getWidth());
I_res.insert(I, vpImagePoint(I.getHeight(), I.getWidth()));
#if (VISP_CXX_STANDARD >= VISP_CXX_STANDARD_11)
std::shared_ptr<vpDisplay> display = vpDisplayFactory::createDisplay();
#else
vpDisplay *display = vpDisplayFactory::allocateDisplay();
#endif
display->setDownScalingFactor(vpDisplay::SCALE_2);
display->init(I_res);
//! [Huang]
vpImage<unsigned char> I_huang = I;
VISP_NAMESPACE_NAME::autoThreshold(I_huang, VISP_NAMESPACE_NAME::AUTO_THRESHOLD_HUANG);
//! [Huang]
I_res.insert(I_huang, vpImagePoint());
//! [Intermodes]
vpImage<unsigned char> I_intermodes = I;
VISP_NAMESPACE_NAME::autoThreshold(I_intermodes, VISP_NAMESPACE_NAME::AUTO_THRESHOLD_INTERMODES);
//! [Intermodes]
I_res.insert(I_intermodes, vpImagePoint(0, I.getWidth()));
//! [IsoData]
vpImage<unsigned char> I_isodata = I;
VISP_NAMESPACE_NAME::autoThreshold(I_isodata, VISP_NAMESPACE_NAME::AUTO_THRESHOLD_ISODATA);
//! [IsoData]
I_res.insert(I_isodata, vpImagePoint(0, 2 * I.getWidth()));
//! [Mean]
vpImage<unsigned char> I_mean = I;
VISP_NAMESPACE_NAME::autoThreshold(I_mean, VISP_NAMESPACE_NAME::AUTO_THRESHOLD_MEAN);
//! [Mean]
I_res.insert(I_mean, vpImagePoint(I.getHeight(), 0));
//! [Otsu]
vpImage<unsigned char> I_otsu = I;
VISP_NAMESPACE_NAME::autoThreshold(I_otsu, VISP_NAMESPACE_NAME::AUTO_THRESHOLD_OTSU);
//! [Otsu]
I_res.insert(I_otsu, vpImagePoint(I.getHeight(), 2 * I.getWidth()));
//! [Triangle]
vpImage<unsigned char> I_triangle = I;
VISP_NAMESPACE_NAME::autoThreshold(I_triangle, VISP_NAMESPACE_NAME::AUTO_THRESHOLD_TRIANGLE);
//! [Triangle]
I_res.insert(I_triangle, vpImagePoint(2 * I.getHeight(), 0));
vpDisplay::display(I_res);
vpDisplay::displayText(I_res, 30, 20, "Huang", vpColor::red);
vpDisplay::displayText(I_res, 30, 20 + I.getWidth(), "Intermodes", vpColor::red);
vpDisplay::displayText(I_res, 30, 20 + 2 * I.getWidth(), "IsoData", vpColor::red);
vpDisplay::displayText(I_res, 30 + I.getHeight(), 20, "Mean", vpColor::red);
vpDisplay::displayText(I_res, 30 + I.getHeight(), 20 + I.getWidth(), "Original", vpColor::red);
vpDisplay::displayText(I_res, 30 + I.getHeight(), 20 + 2 * I.getWidth(), "Otsu", vpColor::red);
vpDisplay::displayText(I_res, 30 + 2 * I.getHeight(), 20, "Triangle", vpColor::red);
vpDisplay::flush(I_res);
vpDisplay::getClick(I_res);
#if (VISP_CXX_STANDARD < VISP_CXX_STANDARD_11) && defined(VISP_HAVE_DISPLAY)
if (display != nullptr) {
delete display;
}
#endif
#else
(void)argc;
(void)argv;
#endif
return EXIT_SUCCESS;
}
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