Search Space Reduction in Fingerprint Recognition Based on Block Orientation Field
Subject Areas : electrical and computer engineering
S.
Helfroush
1
H.
Ghassemian
2
(Tarbiat Modares University)
Keywords: Fingerprintcontinuous classificationrecognitionfingercode,
Abstract :
Classification is the first essential step in every automatic fingerprint recognition system. Regarding to the time and expense of recognition process, it has the benefit of search space reduction. Conventional classification methods are based on visible fingerprint classes. However, due to small number of these classes and nonuniform distribution of fingerprints among them, continuous classification scheme has been addressed. In this method, a similarity criterion is defined and a degree of likeness is assigned to the similarity of input fingerprint and each fingerprint in database. According to similarity criterion, matching of input fingerprint is begun first with the image in database that is more similar to input fingerprint. In this paper, a new similarity measuring method is proposed and used for continuous classification of fingerprints. The method is based on block orientation field. It is translation and rotation invariant and does not need core point existence and detection. Experimental results on FVC2000 database demonstrate the effectiveness of the proposed algorithm in search space reduction compared with the other methods.
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