Enhanced Ridge Structure for Improving Fingerprint Image Quality Based on a Wavelet Domain
- Resource Type
- Periodical
- Authors
- Wang, J.-W.; Le, N. T.; Wang, C.-C.; Lee, J.-S.
- Source
- IEEE Signal Processing Letters IEEE Signal Process. Lett. Signal Processing Letters, IEEE. 22(4):390-394 Apr, 2015
- Subject
- Signal Processing and Analysis
Computing and Processing
Communication, Networking and Broadcast Technologies
Fingerprint recognition
Image matching
Discrete wavelet transforms
Signal processing algorithms
Image reconstruction
2D discrete wavelet transform
fingerprint classification
fingerprint enhancement
singular value decomposition
- Language
- ISSN
- 1070-9908
1558-2361
Fingerprint image enhancement is one of the most crucial steps in an automated fingerprint identification system. In this paper, an effective algorithm for fingerprint image quality improvement is proposed. The algorithm consists of two stages. The first stage is decomposing the input fingerprint image into four subbands by applying two-dimensional discrete wavelet transform. At the second stage, the compensated image is produced by adaptively obtaining the compensation coefficient for each subband based on the referred Gaussian template. The experimental results indicated that the compensated image quality was higher than that of the original image. The proposed algorithm can improve the clarity and continuity of ridge structures in a fingerprint image. Therefore, it can achieve higher fingerprint classification rates than related methods can.