urgent help needed in calculating FAR n FRR in FP recogntion

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SpellChainz

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hi,.....
i m doing a project in fingerprint recogntion.....i need help in calculating false accceptance rate(FAR) and FRR (false rejection rate)....
the formula for FAR is

FAR= # of falseley accepted pattrens / # of imposter pattrens

FRR= # of rejected clients / total # of client pattrens

i dont know how to calculate the
"# of falseley accepted pattrens"and "# of rejected clients"

kindly help me out ......thnx !!!
 

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