Fingerprint Enhancement Using STFT Analysis The quality of fi ngerprint encountered during verifi cation varies over a wide range as shown in Figure 1. It is estimated that roughly 10 of the fi ngerprint encountered during verifi cation can be classifi ed as ’poor’ [1]. Poor quality fi ngerprints lead to generation of spurious minutiae. In smudgy regions, genuine minutiae may also be lost, the net effect of both leading to loss in accuracy of the matcher

ccg06.pdf

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