<p>
序號：16476 發表者：firebolt 發表日期：2002-09-28 16:59:32
<br>主題：請教模式識別入門級問題
<br>內容：問題： <BR>在一個固定的區域里，有黑、白、紅、綠、藍5個大小相同的球（二維），第一步，分別提取5個球的特征；第二，當球的位置發生變化后能準確的找到5個球在圖象上的位置。<BR><BR>1、怎樣提取特征；<BR>2、怎樣準確、快速的定位；<BR><BR>請給出最快的算法 <BR><BR><BR>
<br><a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p>
<hr size=1>
<blockquote><p>
回復者：Hongfeng Wang 回復日期：2002-10-05 04:13:44
<br>內容：In R/G/B channels, binarize the image and retrieve the contour seperately,<BR>and put things together.
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
回復者：firebolt 回復日期：2002-10-05 16:04:50
<br>內容：請講的具體一些好嗎，我是剛開始做這個東西的
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
回復者：Hongfeng Wang 回復日期：2002-10-07 22:39:16
<br>內容：Firstly, I suggest you use OpenCV&nbsp;&nbsp;and IPL, which have many useful routines.<BR>To make life easier, consider 2 balls case:<BR>suppose you have a background of color RGB(0,0,0),<BR>a red ball of color RGB(255,0,0), a green ball of color(0,255,0).<BR>Then in red channel, use a threshold 128, and retrieve the contour,<BR>you can get the red ball size/position. Similarly get the green ball size/position.<BR><BR>You can figure out the 5 balls case.<BR>(Sorry, I am slow at inputing chinese)
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
回復者：firebolt 回復日期：2002-10-08 10:11:59
<br>內容：你的意思是說通過閥值先分割圖象，在跟蹤輪廓，然后得到球的大小和位置，我的英文不好：）。
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
<font color=red>答案被接受</font><br>回復者：Hongfeng Wang 回復日期：2002-10-08 21:44:52
<br>內容：對。這種方法速度遠遠高于Template Matching,<BR>而且對球的尺寸沒有要求。<BR>如果你預先知道球的尺寸，可以采用combing的方法<BR>來獲得Contour，速度會更快。<BR><BR>OpenCV has full source code, you can have a look.
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
回復者：firebolt 回復日期：2002-10-08 22:11:39
<br>內容：謝謝了，我現在做的一個項目需要用到模式識別，但我對圖象處理還不了解，以后還請您多多指教，我的QQ33956652，希望您能加我，謝謝
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
回復者：Hongfeng Wang 回復日期：2002-10-08 22:21:22
<br>內容：You are welcome.<BR>I use yahoo messenger, ID: hongfeng_wang<BR>if you want to chat.
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
回復者：dr0 回復日期：2002-10-08 22:42:38
<br>內容：各位算法高手能否指點一下在下：<BR>http://www.vchelp.net/cndevforum/subject_view.asp?subject_id=16762&forum_id=-1
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
回復者：Hongfeng Wang 回復日期：2002-10-08 22:55:58
<br>內容：Is that a editor?<BR>Sounds like not related to this topic,?
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
回復者：dr0 回復日期：2002-10-09 19:35:14
<br>內容：whether an editor is not so important, I just wanna&nbsp;&nbsp;<BR>know how to recognize the lines: added, deleted , modified<BR>lines<BR>in a source file, e.g, *.c file.<BR>I read your post here and consider that maybe u can <BR>help me . u know I need a relatively accurate algorithm<BR>but I know nothing about pattern recognization .<BR>thanks in advance.
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
回復者：Hongfeng Wang 回復日期：2002-10-09 22:12:53
<br>內容：It's not difficult to detect text change,<BR>but if you want to detect semantic changes,<BR>it's not a easy thing, I am afraid.<BR>This is by far beyond my knowledge.
<br>
<a href="javascript:history.go(-1)">返回上頁</a><br><a href=http://www.copathway.com/cndevforum/>訪問論壇</a></p></blockquote>
<hr size=1>
<blockquote><p>
回復者：dr0 回復日期：2002-10-09 22:52:36
<br>內容：just as u said, i need a semantic recognization.<BR>anyway, thank u for your time.<BR>2002-10-9 22:52:49