期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2014
卷号：5
期号：3
页码：2837-2840
出版社：TechScience Publications
摘要：Fingerprint authentication is one of the highest levels of reliability and has been extensively used by forensic experts in criminal investigations. Low-quality fingerprint images always exist with cracks, scars, dry skin, poor ridges and valleys contrast of these images. We propose an effective two-stage block wise enhancement scheme in spatial and frequency domain by learning from underlying images. In the first stage, the fingerprint image is enhanced in spatial domain with a spatial ridge-compensation filter. Second-Stage enhances the First-Stage image using Discrete Wavelet Transform in the frequency domain
