利用JavaCV如何实现抓取并保存摄像头的影像

今天就跟大家聊聊有关利用JavaCV如何实现抓取并保存摄像头的影像,可能很多人都不太了解,为了让大家更加了解,小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。

网站建设公司,为您提供网站建设,网站制作,网页设计及定制网站建设服务,专注于企业网站建设,高端网页制作,对成都玻璃钢坐凳等多个行业拥有丰富的网站建设经验的网站建设公司。专业网站设计,网站优化推广哪家好,专业成都网站推广优化,H5建站,响应式网站。

实现:

import java.awt.Graphics2D; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.awt.event.MouseAdapter; 
import java.awt.event.MouseEvent; 
import java.awt.image.BufferedImage; 
import java.io.File; 
import java.io.IOException; 
 
import javax.imageio.ImageIO; 
import javax.swing.Timer; 
 
import com.googlecode.javacv.CanvasFrame; 
import com.googlecode.javacv.OpenCVFrameGrabber; 
import com.googlecode.javacv.cpp.opencv_core.IplImage; 
import static com.googlecode.javacv.cpp.opencv_core.cvReleaseImage; 
 
/** 
 * 
 * Use JavaCV/OpenCV to capture camera images 
 * 
 * There are two functions in this demo: 
 * 1) show real-time camera images 
 * 2) capture camera images by mouse-clicking anywhere in the JFrame, 
 * the jpg file is saved in a hard-coded path. 
 * 
 * @author ljs 
 * 2011-08-19 
 * 
 */ 
public class CameraCapture { 
  public static String savedImageFile = "c:\\tmp\\my.jpg"; 
   
  //timer for image capture animation 
  static class TimerAction implements ActionListener { 
    private Graphics2D g; 
    private CanvasFrame canvasFrame; 
    private int width,height; 
     
    private int delta=10; 
    private int count = 0; 
     
    private Timer timer; 
    public void setTimer(Timer timer){ 
      this.timer = timer; 
    } 
      
    public TimerAction(CanvasFrame canvasFrame){ 
      this.g = (Graphics2D)canvasFrame.getCanvas().getGraphics();  
      this.canvasFrame = canvasFrame; 
      this.width = canvasFrame.getCanvas().getWidth(); 
      this.height = canvasFrame.getCanvas().getHeight(); 
    } 
    public void actionPerformed(ActionEvent e) { 
      int offset = delta*count; 
      if(width-offset>=offset && height-offset >= offset) {     
        g.drawRect(offset, offset, width-2*offset, height-2*offset); 
        canvasFrame.repaint(); 
        count++; 
      }else{ 
        //when animation is done, reset count and stop timer. 
        timer.stop(); 
        count = 0; 
      }       
    } 
  } 
 
  public static void main(String[] args) throws Exception { 
    //open camera source 
    OpenCVFrameGrabber grabber = new OpenCVFrameGrabber(0); 
    grabber.start(); 
     
    //create a frame for real-time image display 
    CanvasFrame canvasFrame = new CanvasFrame("Camera"); 
    IplImage image = grabber.grab(); 
    int width = image.width(); 
    int height = image.height(); 
    canvasFrame.setCanvasSize(width, height); 
     
    //onscreen buffer for image capture 
    final BufferedImage bImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); 
    Graphics2D bGraphics = bImage.createGraphics();    
     
    //animation timer 
    TimerAction timerAction = new TimerAction(canvasFrame); 
    final Timer timer=new Timer(10, timerAction); 
    timerAction.setTimer(timer); 
      
    //click the frame to capture an image 
    canvasFrame.getCanvas().addMouseListener(new MouseAdapter(){ 
      public void mouseClicked(MouseEvent e){    
        timer.start(); //start animation 
        try { 
          ImageIO.write(bImage, "jpg", new File(savedImageFile)); 
        } catch (IOException e1) { 
          e1.printStackTrace(); 
        }           
      }         
    }); 
     
    //real-time image display 
    while(canvasFrame.isVisible() && (image=grabber.grab()) != null){ 
      if(!timer.isRunning()) { //when animation is on, pause real-time display 
        canvasFrame.showImage(image);   
        //draw the onscreen image simutaneously 
        bGraphics.drawImage(image.getBufferedImage(),null,0,0);  
      } 
    } 
     
    //release resources 
    cvReleaseImage(image);   
    grabber.stop(); 
    canvasFrame.dispose(); 
  } 
 
} 

看完上述内容,你们对利用JavaCV如何实现抓取并保存摄像头的影像有进一步的了解吗?如果还想了解更多知识或者相关内容,请关注创新互联行业资讯频道,感谢大家的支持。


文章标题:利用JavaCV如何实现抓取并保存摄像头的影像
链接地址:http://scyanting.com/article/ieiihs.html