java使用电脑摄像头识别二维码

本文实例为大家分享了java使用电脑摄像头识别二维码的具体代码，供大家参考，具体内容如下

要想摄像头识别二维码，需要两个基本功能：

1、从摄像头获取图像，2、根据图片解析出二维码信息。

在上一篇java摄像头截图已经实现了摄像头截图，只要再加上zxing（或其它能从图片中解析二维码的组件），就能从图像中解析出二维码，实现代码如下：

package com.pengo.capture;

import javax.swing.Jframe;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.InputStream;
import javax.media.MediaLocator;
import javax.swing.JPanel;
import javazoom.jl.player.Player;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;
 
import net.sf.fmj.ui.application.CaptureDeviceBrowser;
import net.sf.fmj.ui.application.ContainerPlayer;
import net.sf.fmj.ui.application.PlayerPanelPrefs;
public class Cameraframe2 extends Jframe{
  private static int num = 0;
  public Cameraframe2() throws Exception{
   this.setTitle("摄像头截图应用");
   this.setSize(480, 500);
   this.setDefaultCloseOperation(Jframe.EXIT_ON_CLOSE);
   final JPanel cameraPanel = new JPanel();
   this.getContentPane().setLayout(new BorderLayout());
   this.getContentPane().add(cameraPanel, BorderLayout.CENTER);
   ContainerPlayer containerPlayer = new ContainerPlayer(cameraPanel);
   MediaLocator locator = CaptureDeviceBrowser.run(null); //弹出摄像头设备选择
 
   PlayerPanelPrefs prefs = new PlayerPanelPrefs();
   containerPlayer.setMediaLocation(locator.toExternalForm(), prefs.autoPlay);
   
   new Thread() {
    public void run() {
     while (true) {
      try {
      Thread.sleep(1000);
Dimension imageSize = cameraPanel.getSize();
BufferedImage image = new BufferedImage(
  imageSize.width, imageSize.height,
  BufferedImage.TYPE_INT_ARGB);
Graphics2D g = image.createGraphics();
cameraPanel.paint(g);
g.dispose();
LuminanceSource source = new BufferedImageLuminanceSource(
  image);
BinaryBitmap bitmap = new BinaryBitmap(
 new HybridBinarizer(source));
Result result;
result = new MultiFormatReader().decode(bitmap);
System.out.println("二维码====:" + result.getText());
InputStream is = Cameraframe.class.getClassLoader().getResourceAsStream("resource/beep.mp3");
Player player = new Player(is);
player.play();
      } catch (Exception re) {
re.printStackTrace();
      }
     }
    }
   }.start();
  }
  
  public static void main(String[] args) throws Exception{
   Cameraframe2 camera = new Cameraframe2();
   camera.setVisible(true);
  }
 }

最后来张效果图（本图仅供参考）

要想识别效果好点，摄像头像素最好500W以上，活动二维码签到、物品扫描，只需扛台手提，再加个高清摄像头就行了。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。