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</TD></TR></TBODY></TABLE>我把程序分為兩種，有趣的和無趣的，最近做了幾個(gè)有趣的項(xiàng)目，其中一個(gè)，應(yīng)當(dāng)就算是攝像頭拍照程序了。用于現(xiàn)場(chǎng)拍照，生成照片，主要用到Java
Media Framework(JMF)。
<BR><BR> 首先到SUN下載最新的JMF，然后安裝。http://java.sun.com/products/java-media/jmf/index.jsp<BR><BR> 然后，說一下需求<BR><BR> 1．
用攝像頭拍照<BR><BR> 2． 在文本框輸入文件名<BR><BR> 3． 按下拍照按鈕，獲取攝像頭內(nèi)的圖像<BR><BR> 4．
在拍下的照片上有一紅框截取固定大小的照片。<BR><BR> 5．
保存為本地圖像為jpg格式，不得壓縮畫質(zhì)<BR><BR> 技術(shù)關(guān)鍵，相信也是大家最感興趣的部分也就是如何讓一個(gè)攝像頭工作，并拍下一張照片了。<BR><BR> 利用JMF，代碼很簡單：<BR><BR>//利用這三個(gè)類分別獲取攝像頭驅(qū)動(dòng)，和獲取攝像頭內(nèi)的圖像流，獲取到的圖像流是一個(gè)Swing的Component組件類<BR><BR>public
static Player player = null;<BR>private CaptureDeviceInfo di = null;<BR>private
MediaLocator ml = null;<BR><BR>//文檔中提供的驅(qū)動(dòng)寫法，為何這么寫我也不知：）<BR><BR>String str1 =
"vfw:Logitech USB Video Camera:0";<BR>String str2 = "vfw:Microsoft WDM Image
Capture (Win32):0"; <BR>di = CaptureDeviceManager.getDevice(str2);<BR>ml =
di.getLocator();<BR>try<BR>{<BR> player =
Manager.createRealizedPlayer(ml);<BR> player.start();<BR> Component comp;<BR> if
((comp = player.getVisualComponent()) != null)<BR> {<BR> add(comp,
BorderLayout.NORTH);<BR> }<BR>}<BR>catch (Exception
e)<BR>{<BR> e.printStackTrace();<BR>}<BR> 接下來就是點(diǎn)擊拍照，獲取攝像頭內(nèi)的當(dāng)前圖像。<BR><BR> 代碼也是很簡單：<BR><BR>private
JButton capture;<BR>private Buffer buf = null;<BR>private BufferToImage btoi =
null;<BR>private ImagePanel imgpanel = null;<BR>private Image img =
null;<BR>private ImagePanel imgpanel = null;<BR><BR>JComponent c = (JComponent)
e.getSource();<BR>if (c == capture)//如果按下的是拍照按鈕 <BR>{ <BR> FrameGrabbingControl
fgc =(FrameGrabbingControl)
player.getControl("javax.media.control.FrameGrabbingControl");<BR> buf =
fgc.grabFrame(); // 獲取當(dāng)前禎并存入Buffer類<BR> btoi = new BufferToImage((VideoFormat)
buf.getFormat());<BR> img = btoi.createImage(buf); // show the image
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