详解使用JavaCV/OpenCV抓取并存储摄像头图像
本程序通过JFrame实时显示本机摄像头图像，并将图像存储到一个缓冲区，当用户用鼠标点击JFrame中任何区域时，显示抓取图像的简单动画，同时保存缓冲区的图像到磁盘文件中。点击JFrame关闭按钮可以退出程序。
实现：
importjava.awt.Graphics2D;
importjava.awt.event.ActionEvent;
importjava.awt.event.ActionListener;
importjava.awt.event.MouseAdapter;
importjava.awt.event.MouseEvent;
importjava.awt.image.BufferedImage;
importjava.io.File;
importjava.io.IOException;
importjavax.imageio.ImageIO;
importjavax.swing.Timer;
importcom.googlecode.javacv.CanvasFrame;
importcom.googlecode.javacv.OpenCVFrameGrabber;
importcom.googlecode.javacv.cpp.opencv_core.IplImage;
importstaticcom.googlecode.javacv.cpp.opencv_core.cvReleaseImage;
/**
*
*UseJavaCV/OpenCVtocapturecameraimages
*
*Therearetwofunctionsinthisdemo:
*1)showreal-timecameraimages
*2)capturecameraimagesbymouse-clickinganywhereintheJFrame,
*thejpgfileissavedinahard-codedpath.
*
*@authorljs
*2011-08-19
*
*/
publicclassCameraCapture{
publicstaticStringsavedImageFile="c:\\tmp\\my.jpg";
//timerforimagecaptureanimation
staticclassTimerActionimplementsActionListener{
privateGraphics2Dg;
privateCanvasFramecanvasFrame;
privateintwidth,height;
privateintdelta=10;
privateintcount=0;
privateTimertimer;
publicvoidsetTimer(Timertimer){
this.timer=timer;
}
publicTimerAction(CanvasFramecanvasFrame){
this.g=(Graphics2D)canvasFrame.getCanvas().getGraphics();
this.canvasFrame=canvasFrame;
this.width=canvasFrame.getCanvas().getWidth();
this.height=canvasFrame.getCanvas().getHeight();
}
publicvoidactionPerformed(ActionEvente){
intoffset=delta*count;
if(width-offset>=offset&&height-offset>=offset){
g.drawRect(offset,offset,width-2*offset,height-2*offset);
canvasFrame.repaint();
count++;
}else{
//whenanimationisdone,resetcountandstoptimer.
timer.stop();
count=0;
}
}
}
publicstaticvoidmain(String[]args)throwsException{
//opencamerasource
OpenCVFrameGrabbergrabber=newOpenCVFrameGrabber(0);
grabber.start();
//createaframeforreal-timeimagedisplay
CanvasFramecanvasFrame=newCanvasFrame("Camera");
IplImageimage=grabber.grab();
intwidth=image.width();
intheight=image.height();
canvasFrame.setCanvasSize(width,height);
//onscreenbufferforimagecapture
finalBufferedImagebImage=newBufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
Graphics2DbGraphics=bImage.createGraphics();
//animationtimer
TimerActiontimerAction=newTimerAction(canvasFrame);
finalTimertimer=newTimer(10,timerAction);
timerAction.setTimer(timer);
//clicktheframetocaptureanimage
canvasFrame.getCanvas().addMouseListener(newMouseAdapter(){
publicvoidmouseClicked(MouseEvente){
timer.start();//startanimation
try{
ImageIO.write(bImage,"jpg",newFile(savedImageFile));
}catch(IOExceptione1){
e1.printStackTrace();
}
}
});
//real-timeimagedisplay
while(canvasFrame.isVisible()&&(image=grabber.grab())!=null){
if(!timer.isRunning()){//whenanimationison,pausereal-timedisplay
canvasFrame.showImage(image);
//drawtheonscreenimagesimutaneously
bGraphics.drawImage(image.getBufferedImage(),null,0,0);
}
}
//releaseresources
cvReleaseImage(image);
grabber.stop();
canvasFrame.dispose();
}
}
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毛票票。