NDLI: Fingerprint frequency normalisation and enhancement using two-dimensional short-time Fourier transform analysis

Content Provider	IET Digital Library
Author	Ghafoor, Mubeen Taj, Imtiaz Ahmad Jafri, Mohammad Noman
Abstract	A fingerprint image with non-uniform ridge frequencies can be considered as a two-dimensional dynamic signal. A non-uniform stress on the sensing area applied during fingerprint acquisition may result in a non-linear distortion that disturbs the local frequency of ridges adversely affecting the matching performance. This study presents a new approach based on Short time Fourier transform analysis and local adaptive contextual filtering for frequency distortion removal and enhancement. In the proposed approach, the fingerprint image is divided into sub-images to determine local dominant frequency and orientation. Gaussian Directional band pass filtering is then adaptively applied in frequency domain. These filtered sub-images are then combined in spatial domain using a novel technique to obtain the enhanced fingerprint image of high ridge quality and uniform inter-ridge distance. Simulation results show the efficacy of the proposed enhancement technique as compared to other well-known contextual filtering based enhancement techniques reported in the literature.
Starting Page	806
Ending Page	816
Page Count	11
ISSN	17519632
Volume Number	10
e-ISSN	17519640
Issue Number	Issue 8, Dec (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cvi/10/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cvi.2016.0005
Journal	IET Computer Vision
Publisher Date	2016-05-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Filter Band-pass Filter Computer Vision And Image Processing Technique Filtering Method in Signal Processing Fingerprint Acquisition Fingerprint Frequency Enhancement Fingerprint Frequency Normalisation Fingerprint Identification Fingerprint Image Enhancement Fourier Transforms Frequency Distortion Enhancement Frequency Distortion Removal Frequency Domain Frequency Domain Analysis Gaussian Directional Band Pass Filtering Image Enhancement Image Filtering Image Matching Image Recognition Integral Transforms Local Adaptive Contextual Filtering Local Dominant Frequency Determination Matching Performance Mathematical Analysis Nonlinear Distortion Nonuniform Ridge Frequency Ridge Quality Spatial Domain Subimage Filtering Two-dimensional Dynamic Signal Two-dimensional Short-time Fourier Transform Analysis Uniform Interridge Distance
Content Type	Text
Resource Type	Article
Subject	Computer Vision and Pattern Recognition Software

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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