Affiliations: School of Electronic Information, Zhejiang Business Technology Institute, Ningbo, China
Correspondence:
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Corresponding author. Qinghong Zhou, School of Electronic Information, Zhejiang Business Technology Institute, Ningbo, 315012, China. E-mail: zhouqinghong2019@163.com.
Abstract: Aiming at the problem that Separable Gabor filter can destroy the ridge structure of fingerprint adjacent singular points, and the effect of directional Fourier filter in repairing fingerprint ridges is not obvious, a method for singular point region enhancement of fingerprint image based on symmetric phase consistency is proposed. Fingerprint image is preprocessed to extract effective fingerprint region; the singularity region of the effective fingerprint region is obtained by using the singularity extraction method; the method of singular region feature extraction is used to obtain the singular region feature of fingerprint image; the fuzzy clustering algorithm is used to enhance the singular region feature of fingerprint image, which can enhance the singular region of fingerprint image. The results show that the quality of fingerprint image enhanced by the proposed method is better, the performance of denoising is remarkable, and the efficiency of extracting singular feature of fingerprint image is high.
Keywords: Symmetric phase, consistency, fingerprint, image, singular point, enhancement
