OCV

[kako]

I search after ocv toturials

[cnoeval]

You shouldn't have any trouble finding that info if you're searching. There's a ton of great tutorials on the subject:
http://www.google.com/search?q=opencv+tutorial&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a