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which opencv version are you using ?
( as of 2.4.2, there's a Formatter class in core.hpp, which defines those constants, but the compiler finds another class with the same name in operations.hpp first, which does not. same error as you get )
( as of 2.4.9, it just works )
if you're using 2.4.5, chances are high, that someone overeagerly updated the tutorial to the trunk version
just comment out lines 62-65.
