下面是我最小代码：

package charucotest;



import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.core.CvType;
import org.opencv.core.Scalar;

import org.opencv.core.*;
import org.opencv.highgui.HighGui;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;
import org.opencv.objdetect.QRCodeDetector;

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;
import org.opencv.core.MatOfByte;
import org.opencv.core.Size;


import org.opencv.videoio.VideoCapture;
import java.util.concurrent.*;

import org.opencv.aruco.Aruco;
import org.opencv.aruco.ArucoDetector;
import org.opencv.aruco.DetectorParameters;
import org.opencv.aruco.Dictionary;

import java.util.ArrayList;
import java.util.List;

public class App {

    public static JFrame frame;

    public static String currentpath;

    public static void main(String[] args) {
        currentpath = System.getProperty("user.dir");
        System.out.println("current path is:" + currentpath);
        System.load(currentpath+"/lib/libopencv_java460.so");
        Dictionary dictionary= Aruco.getPredefinedDictionary(Aruco.DICT_4X4_50);
        DetectorParameters parameters= DetectorParameters.create();
        //parameters.set_cornerRefinementMethod(Aruco.CORNER_REFINE_NONE);
        //parameters.set_cornerRefinementMethod();
        ArucoDetector detector= new ArucoDetector(dictionary,parameters);
    
        System.out.println("Welcome to OpenCV " + Core.VERSION);
        List<Mat> corners = new ArrayList<Mat>();
        //List<Mat> rejectedImgPoints = new ArrayList<Mat>();
        Mat ids = new Mat();
        // [12,12]
        Mat img2 = Imgcodecs.imread(currentpath+"/assets/card.jpg");
        detector.detectMarkers(img2, corners, ids);
        System.out.println("OpenCV Mat: " + ids.dump());
        System.out.println("OpenCV size idds  " + ids.size());
        System.out.println("OpenCV Mat Corner: " + String.valueOf(corners.size()));

    } 

}

opencv库已经加载，如果我有两行代码，我可以解码qrcode，所以它可以工作。
但当我试图读取我的资产卡时：

它一无所获，
我已经验证了aruco代码似乎是好的4x4 50：https://chev.me/arucogen/
所以我不知道为什么它没有找到arcuo代码。
测试项目如下：
https://github.com/bussiere/charucotest/blob/master/app/src/main/java/charucotest/App.java编辑：此讨论板的事件：

或者通过将检测字典更改为6x6并使用此板（qrcode检测工作正常）