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Patents Year : 2005

METHOD FOR IMPROVING IMAGES OF FINGERPRINTS

Abstract

The invention concerns the field of image processing and, in particular, a method for improving the image of fingerprints with the aim of facilitating the extraction of parameters necessary for carrying out fingerprint recognition. The invention provides a method for improving a fingerprint image comprising at least the following steps: normalizing the initial image and determining the useful area of the image, and is characterized in that it also contains successive steps consisting of: splitting the image into a number of blocks; calculating the FFT of each block; determining frequencies of image blocks from said FFT; applying Gabor filters of parameters determined by these frequencies, and; determining orientations of the image.
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Dates and versions

hal-00215932 , version 1 (24-01-2008)

Identifiers

  • HAL Id : hal-00215932 , version 1

Cite

Matthieu Perreira da Silva. METHOD FOR IMPROVING IMAGES OF FINGERPRINTS. France, N° de brevet: WO2005071602. 2005, pp.17. ⟨hal-00215932⟩

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UNIV-ROCHELLE
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