Extract Iris of eye from image of face

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C#

My Graduate project is Iris Recognition :
plz help me how i can cut iris from face picture by c# to apply some filters

[edit]
Subject changed: "Help me plz qiuckly" is not a good subject for a number of reasons:
1) It tells us nothing about the problem.
2) It tells us you are too lazy to use a keyboard, or indeed a spell checker
3) It tells us you left your homework too late.
Tags.
- OriginalGriff[/edit]