[JAVA] Desktop: OpenCV Change Size Use Resize

Goal

OpenCV_Change_Size_Use_Resize.java

import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;

import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;

public class OpenCV_Change_Size_Use_Resize {

    static{ System.loadLibrary(Core.NATIVE_LIBRARY_NAME); }
    private JFrame frmjavaSwing;
    private Mat source=new Mat();
    /**
     * Launch the application.
     */
    public static void main(String[] args) {

        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    OpenCV_Change_Size_Use_Resize window = new OpenCV_Change_Size_Use_Resize();
                    window.frmjavaSwing.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the application.
     */
    public OpenCV_Change_Size_Use_Resize() {
        initialize();
        System.out.println("Imgproc.INTER_NEAREST="+Imgproc.INTER_NEAREST);
        System.out.println("Imgproc.INTER_LINEAR="+Imgproc.INTER_LINEAR);
        System.out.println("Imgproc.INTER_AREA="+Imgproc.INTER_AREA);
        System.out.println("Imgproc.INTER_CUBIC="+Imgproc.INTER_CUBIC);
        System.out.println("Imgproc.INTER_LANCZOS4="+Imgproc.INTER_LANCZOS4);
    }

    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        final Mat src = Imgcodecs.imread("D:\\projects\\Java\\OpenCV_Samples\\resource\\imgs\\clean.jpg ");
        setSource(src);
        BufferedImage image=matToBufferedImage(source);

        frmjavaSwing = new JFrame();
        frmjavaSwing.setTitle("opencv ���j�Y�p�m��,�ϥ�resize");
        frmjavaSwing.setBounds(100, 100, 520, 550);
        frmjavaSwing.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frmjavaSwing.getContentPane().setLayout(null);

        final JLabel lblNewLabel = new JLabel("");
        lblNewLabel.setBounds(10, 68, 438, 438);
        lblNewLabel.setIcon(new ImageIcon(image));
        frmjavaSwing.getContentPane().add(lblNewLabel);

        JButton btnNewButton = new JButton("���j2��");

        btnNewButton.setBounds(10, 21, 87, 23);
        frmjavaSwing.getContentPane().add(btnNewButton);

        JButton button = new JButton("�Y�p2��");

        button.setBounds(107, 21, 87, 23);
        frmjavaSwing.getContentPane().add(button);

        JLabel lblNewLabel_1 = new JLabel("interpolation");
        lblNewLabel_1.setBounds(290, 10, 101, 15);
        frmjavaSwing.getContentPane().add(lblNewLabel_1);

        final JSlider slider = new JSlider();

        slider.setValue(0);
        slider.setMaximum(4);
        slider.setBounds(255, 21, 164, 25);
        frmjavaSwing.getContentPane().add(slider);

        final JLabel lblNewLabel_2 = new JLabel("0");
        lblNewLabel_2.setBounds(429, 25, 46, 15);
        frmjavaSwing.getContentPane().add(lblNewLabel_2);


        slider.addChangeListener(new ChangeListener() {
            public void stateChanged(ChangeEvent arg0) {
                lblNewLabel_2.setText(slider.getValue()+"");
                BufferedImage newImage=matToBufferedImage( resize(getSource(),1,slider.getValue()));
            }
        });

        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                BufferedImage newImage=matToBufferedImage( resize(getSource(),0.5,slider.getValue()));
                lblNewLabel.setIcon(new ImageIcon(newImage));
            }
        });
        btnNewButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                BufferedImage newImage=matToBufferedImage( resize(getSource(),2,slider.getValue()));
                lblNewLabel.setIcon(new ImageIcon(newImage));
            }
        });
    }
    public Mat resize(Mat source,double size ,int interpolation){

        Mat destination=new Mat(source.rows()*(int)size,source.cols()*(int)size,source.type());
        Imgproc.resize(source, destination,destination.size(), size,size,interpolation);
        setSource(destination);
        return destination;

    }
    public BufferedImage matToBufferedImage(Mat matrix) {
        int cols = matrix.cols();
        int rows = matrix.rows();
        int elemSize = (int)matrix.elemSize();
        byte[] data = new byte[cols * rows * elemSize];
        int type;
        matrix.get(0, 0, data);
        switch (matrix.channels()) {
            case 1:
                type = BufferedImage.TYPE_BYTE_GRAY;
                break;
            case 3:
                type = BufferedImage.TYPE_3BYTE_BGR;
                // bgr to rgb
                byte b;
                for(int i=0; i<data.length; i=i+3) {
                    b = data[i];
                    data[i] = data[i+2];
                    data[i+2] = b;
                }
                break;
            default:
                return null;
        }
        BufferedImage image2 = new BufferedImage(cols, rows, type);
        image2.getRaster().setDataElements(0, 0, cols, rows, data);
        return image2;
    }

    public Mat getSource() {
        return source;
    }

    public void setSource(Mat source) {
        this.source = source;
    }
}

Result