if you got error tbb.dll missing on your computer after you build your opencv application. to solved this problem: follow me
1. search tbb.dll on installing opencv folder.
2. i'm found it on C:\OpenCV2.3.1\build\common\tbb.
3. i'm using x86 because i'm build application with win32 standar[my system with x64 and opencv2.3.1]. if you using x64 standar choose intel64 folder and search tbb.dll on vc10.
4. copy tbb.dll to your application realase or debug. after that you rebuild your application..
5. that's work for me.
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