OpenCV/opencv_contrib/modules/aruco/samples/create_marker.cpp

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#include <opencv2/highgui.hpp>
#include <opencv2/aruco.hpp>
#include <iostream>
#include "aruco_samples_utility.hpp"

using namespace cv;

namespace {
const char* about = "Create an ArUco marker image";

//! [aruco_create_markers_keys]
const char* keys  =
        "{@outfile |<none> | Output image }"
        "{d        |       | dictionary: DICT_4X4_50=0, DICT_4X4_100=1, DICT_4X4_250=2,"
        "DICT_4X4_1000=3, DICT_5X5_50=4, DICT_5X5_100=5, DICT_5X5_250=6, DICT_5X5_1000=7, "
        "DICT_6X6_50=8, DICT_6X6_100=9, DICT_6X6_250=10, DICT_6X6_1000=11, DICT_7X7_50=12,"
        "DICT_7X7_100=13, DICT_7X7_250=14, DICT_7X7_1000=15, DICT_ARUCO_ORIGINAL = 16}"
        "{cd       |       | Input file with custom dictionary }"
        "{id       |       | Marker id in the dictionary }"
        "{ms       | 200   | Marker size in pixels }"
        "{bb       | 1     | Number of bits in marker borders }"
        "{si       | false | show generated image }";
}
//! [aruco_create_markers_keys]


int main(int argc, char *argv[]) {
    CommandLineParser parser(argc, argv, keys);
    parser.about(about);

    if(argc < 4) {
        parser.printMessage();
        return 0;
    }

    int markerId = parser.get<int>("id");
    int borderBits = parser.get<int>("bb");
    int markerSize = parser.get<int>("ms");
    bool showImage = parser.get<bool>("si");

    String out = parser.get<String>(0);

    if(!parser.check()) {
        parser.printErrors();
        return 0;
    }

    Ptr<aruco::Dictionary> dictionary;
    if (parser.has("d")) {
        int dictionaryId = parser.get<int>("d");
        dictionary = aruco::getPredefinedDictionary(aruco::PREDEFINED_DICTIONARY_NAME(dictionaryId));
    }
    else if (parser.has("cd")) {
        FileStorage fs(parser.get<std::string>("cd"), FileStorage::READ);
        bool readOk = aruco::Dictionary::readDictionary(fs.root(), dictionary);
        if(!readOk) {
            std::cerr << "Invalid dictionary file" << std::endl;
            return 0;
        }
    }
    else {
        std::cerr << "Dictionary not specified" << std::endl;
        return 0;
    }

    Mat markerImg;
    aruco::drawMarker(dictionary, markerId, markerSize, markerImg, borderBits);

    if(showImage) {
        imshow("marker", markerImg);
        waitKey(0);
    }

    imwrite(out, markerImg);

    return 0;
}