Google是您的朋友:很好，经常拜访他.与在这里发布问题相比，他可以更快地回答问题.
如果您曾拜访过他，您会发现以下这些: ^ ]

Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here...
If you had paid him a visit, you would have found these: http://www.google.co.uk/search?sourceid=chrome&ie=UTF-8&q=Colour+detection+using+Matlab[^]