java使用电脑摄像头识别二维码 java使用电脑摄像头识别二维码
a19880813 人气:0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。
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