Fingerprint image enhancement using decimation free directional adaptive mean filtering

Authors:
Muhammad Talal Ibrahim;Imtiaz A. Taj;M. Khalid Khan;M. Aurangzeb Khan
Affiliations:
Department of Computer Engineering, Center for Advanced Studies in Engineering, Islamabad, Pakistan;Department of Computer Engineering, Center for Advanced Studies in Engineering, Islamabad, Pakistan;Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad, Pakistan;Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad, Pakistan
Venue:
ICVGIP'06 Proceedings of the 5th Indian conference on Computer Vision, Graphics and Image Processing
Year:
2006

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Abstract

In this paper we proposed a new enhancement technique that is based on the integration of Decimation Free Directional responses of the Decimation Free Directional Filter Banks (DDFB), adaptive mean filtering and the eigen decomposition of the Hessian matrix. By decomposing the input fingerprint image into decimation free directional images, it is easy to remove the noise directionally by means of adaptive mean filtering and further eigen decomposition of the Hessian matrix was used for the segmentation purpose. As the input fingerprint image is not uniformly illuminated so we have used the bandpass filter for the elimination of non-uniform illumination and for the creation of frequency ridge image before giving it to DDFB. The final enhanced result is constructed on a block-by-block basis by comparing energy of all the directional images and picking one that provides maximum energy.