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。