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：

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									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);

									  }

									 }