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);
}
}
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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服务器之家。
原文链接：https://blog.csdn.net/luckyboyguo/article/details/37691217?utm_source=blogkpcl3