Fingerprint Image Preprocessing Method Based on the Continuous Spectrum Analysis

  • Xiaosi Zhan
  • Zhaocai Sun
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 107)


The spectral field analysis is one key means for processing the fingerprint image in automatic fingerprint identification technology. The fingerprint ridge distance can be acquired and the fingerprint image can be enhanced accurately using the spectral filed analysis method. However, traditional Fourier transform spectral analysis method had the worse redundancy degree in estimating the ridge distance because it was based on the two-dimension discrete Fourier spectrum. To introduce the sampling theorem into the fingerprint image processing method and transform the discrete spectrum into the continuous spectrum. To acquire the local peak points adopting artificial immune network optimization algorithm and then segment valid fingerprint image region from background region or stressed-noised region, obtain ridge distance and ridge orientation of valid fingerprint regions based on the continuous spectrum analysis in frequency field. The experimental results indicate that the method has higher adaptability and can improve the accuracy of the automatic fingerprint identification system effectively.


Fingerprint Fingerprint identification Ridge distance Fourier transform Artificial immune network 



The authors would like to be grateful to the editors and anonymous reviewers for their works. This work was supported in part by Zhejiang Province Science Foundation of China under of No.Y1101304, Anhui Province Science Foundation of China under of No.20090412072 and Anhui Province Education Department Science Foundation of China under Grant No.2005KJ089. Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors.


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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.School of Information Science and TechnologyZhejiang International Studies UniversityHangzhouPeople’s Republic of China
  2. 2.School of Computer and InformationFuyang Normal CollegeFuyangPeople’s Republic of China

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