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| Directional Filter Masks for Fingerprint Enhancement Based on Fibonacci Sequences |
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Abstract The coefficients of the filter masks are often determined experientially or experimentally. Some of the filter coefficients are beyond the range of the mask after rotation, which destroys the distributed regularity of the coefficients. Aiming at this problem, the size of the filter mask is expanded to resolve the problem of overflow with coefficients distributed regularity maintained. On the other hand, a section of the famous 〖JP2〗Fibonacci sequence is chosen as the coefficients to reduce the influence of human factors.〖JP〗 The experimental results show that this directional filter mask works more effectively than the existing procedures. Moreover, it connects the breaks and separates conglutinated ridges simultaneously.
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2011, Vol. 24 
