BlogJava-小方的Java博客-文章分类-J2se 高级

//利用这三个类分别获取摄像头驱动，和获取摄像头内的图像流，获取到的图像流是一个Swing的Component组件类

public static Player player = null;

private CaptureDeviceInfo di = null;

private MediaLocator ml = null;

//文档中提供的驱动写法，为何这么写我也不知：）

String str1 = "vfw:Logitech USB Video Camera:0";

String str2 = "vfw:Microsoft WDM Image Capture (Win32):0";

di = CaptureDeviceManager.getDevice(str2);

ml = di.getLocator();

try

{

　player = Manager.createRealizedPlayer(ml);

　player.start();

　Component comp;

　if ((comp = player.getVisualComponent()) != null)

　{

　　add(comp, BorderLayout.NORTH);

　}

catch (Exception e)

{

　e.printStackTrace();

}

　　接下来就是点击拍照，获取摄像头内的当前图像。

　　代码也是很简单：

private JButton capture;

private Buffer buf = null;

private BufferToImage btoi = null;

private ImagePanel imgpanel = null;

private Image img = null;

private ImagePanel imgpanel = null;

JComponent c = (JComponent) e.getSource();

if (c == capture)//如果按下的是拍照按钮

{

　FrameGrabbingControl fgc =(FrameGrabbingControl) 　player.getControl("javax.media.control.FrameGrabbingControl");

　buf = fgc.grabFrame(); // 获取当前祯并存入Buffer类

　btoi = new BufferToImage((VideoFormat) buf.getFormat());

　img = btoi.createImage(buf); // show the image

　imgpanel.setImage(img);

}

　　保存图像的就不多说了，以下为示例代码

BufferedImage bi = (BufferedImage) createImage(imgWidth, imgHeight);

Graphics2D g2 = bi.createGraphics();

g2.drawImage(img, null, null);

FileOutputStream out = null;

try

{

　out = new FileOutputStream(s);

}

catch (java.io.FileNotFoundException io)

{

　System.out.println("File Not Found");

}

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);

JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);

param.setQuality(1f, false);//不压缩图像

encoder.setJPEGEncodeParam(param);

try

{

　encoder.encode(bi);

　out.close();

}

catch (java.io.IOException io)

{

　System.out.println("IOException");

}