OpenCV的java绑定显示图片

来源：互联网发布：百合网数据库编辑：程序博客网时间：2024/06/11 12:15

虽然opencv已经原生支持java但是还有一部分api没有实现，比如显示图片的api就没有，这时就需要使用swing或awt来显示图片了。

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 org.opencv.core.Core;import org.opencv.core.CvType;import org.opencv.core.Mat;import org.opencv.core.MatOfByte;import org.opencv.core.Point;import org.opencv.core.Scalar;import org.opencv.highgui.Highgui;public class Main {public static void showResult(Mat img) {    //Imgproc.resize(img, img, new Size(640, 480));    MatOfByte matOfByte = new MatOfByte();    Highgui.imencode(".jpg", img, matOfByte);    byte[] byteArray = matOfByte.toArray();    BufferedImage bufImage = null;    try {        InputStream in = new ByteArrayInputStream(byteArray);        bufImage = ImageIO.read(in);        JFrame frame = new JFrame();        frame.getContentPane().add(new JLabel(new ImageIcon(bufImage)));        frame.pack();        frame.setVisible(true);    } catch (Exception e) {        e.printStackTrace();    }}    public static void main(String[] args) {        System.out.println("Welcome to OpenCV " + Core.VERSION);        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);        //Mat m  = Mat.eye(3, 3, CvType.CV_8UC1);                Mat img  = Mat.ones(200, 200, CvType.CV_8UC3);        img.setTo(new Scalar(255, 255, 255));        //img.setTo(new Scalar(0, 0, 0));        Point p1 = new Point(10, 10);        Point p2 = new Point(150, 150);        //Rect rect = new Rect(p1, p2);       // img.create(200, 200, CvType.CV_16U);        Core.rectangle(img, p1, p2, new Scalar(255, 0, 0),5);        Core.line(img, new Point(30,30),new Point(100,100), new Scalar(0,255, 100));        String filename = "test.jpg";        Highgui.imwrite(filename, img);        showResult(img);                        //System.out.println("m = " + img.dump());    }}

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