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The Research of the Fingerprint Image Quality Assessment Based on Gabor Filter

Author: FangChenYan
Tutor: YangFan
School: Zhejiang Normal University
Course: Computer Software and Theory
Keywords: Fingerprint image acquisition Quality assessment Gabor filters Fingerprint Segmentation Singular point
CLC: TP391.41
Type: Master's thesis
Year: 2009
Downloads: 158
Quote: 1
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Abstract


In recent years, fingerprints, biometric identification technology has aroused widespread concern. Fingerprint recognition technology has high feasibility and practicality has become the most popular, the most convenient, one of the most reliable personal identification technology. Therefore, the study of automatic fingerprint identification has important academic significance and application value. Automated Fingerprint Identification System is an integrated system is one set of optical technology, image processing, computer and network, database technology, pattern recognition technology, typically include a fingerprint image capture fingerprint image quality evaluation, the fingerprint image preprocessing, feature extraction, feature matching process. In practical applications, since the performance of different acquisition of the fingerprint scanner different environment as well as the finger wet and dry, clean, and the degree of wear, leading to the acquired fingerprint image is easy to produce fuzzy, broken lines, or adhesion phenomenon; addition, sometimes collected fingerprint image there fingerprint acquisition residual stains and background noise, resulting in the decline in the quality of the fingerprint image. Automated Fingerprint Identification System, the poor quality of the fingerprint image will lead to false positives and reject rate increased significantly, thus affecting the performance of the whole fingerprint recognition system. Therefore, the fingerprint image quality evaluation is a very critical part of the Automated Fingerprint Identification System, widespread concern by the majority of researchers. Summarize, summarized, and drawing on the research results achieved by the domestic and foreign scholars on the basis of the Automated Fingerprint Identification System fingerprint image quality assessment algorithm carried out in-depth research. This paper first introduces the basic principles of biometrics and fingerprint recognition technology; then the analysis of existing fingerprint image quality evaluation method, influencing factors of the fingerprint image quality fingerprint image quality evaluation thought, fingerprint image quality evaluation module functions instructions to compare notes on two typical fingerprint image quality evaluation method; re-introduced to the basic principles of the two-dimensional Gabor filter, and design requirements for the characteristics of the fingerprint image and fingerprint image quality evaluation, the eight-direction D Gabor The filter; Finally, we proposed the fingerprint image quality evaluation algorithm based on Gabor filter and in FVC2004 standard fingerprint database on a large number of experimental verification. Experimental results show that the proposed algorithm is effective.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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