Extração de minúcias em imagens de impressões digitais / Extraction minutiae in fingerprints

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

In this research a method for minutiae extraction in fingerprints images, based on classical approach of image binarization, is presented. The method is composed by three main modules: preprocessing, minutiae detection and post-processing. It was used fingerprint images from FVC2004 database (Fingerprint Verification Competition) that includes synthetic and real images. The tests validation was made through quantitative methods of measurement called sensitivity and specificity. The best results obtained with the developed software were with synthetic images followed by the images acquired with optical sensor. The results obtained with the thermal sensor images were worse than the ones obtained with synthetic and real images, showing a considerable difference, because they contain more noise.

ASSUNTO(S)

minutiae extraction impressão digital extração de minúcias fingerprint biometry biometria

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