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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Patents
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https://hal.archives-ouvertes.fr/hal-00215932
Contributor : Matthieu Perreira da Silva <>
Submitted on : Thursday, January 24, 2008 - 10:36:11 AM
Last modification on : Wednesday, September 11, 2019 - 11:00:13 AM

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  • HAL Id : hal-00215932, version 1

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Citation

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

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