Directional Diffusion Filter Bank and Texture Quality Measurement for Robust Orientation Estimation and Enhancement of Fingerprint Images
牋Fingerprint enhancement and orientation field estimation are two of the core algorithms of fingerprint preprocessing. Performance of existing methods is usually poor for low-quality fingerprint images. This paper proposes to use a directional diffusion filter bank so that any local region of a fingerprint image can be always effectively enhanced by a filter of an optimal direction. A final enhanced image is obtained by selecting optimally enhanced pixels from the filter bank according to a local quality measurement based on a spectrum analysis, and at the same time, an orientation field is given by the selected filter for each pixel. Experiments show that the algorithm is superior to the existing methods and robust for images of poor quality.
KeywordsFingerprint orientation field estimation Fingerprint enhancement Spectrum analysis Directional diffusion filter bank Quality measurement
牋 This work is partially supported by the Doctoral Fund of Guangxi University of Science and Technology (14Z12); Scientific Fund of Guangxi University of Science and Technology (174522); Scientific Fund of Guangxi University of Science and Technology (20161309); the Basic Ability Improvement Project of Young and Middle-aged Teachers in Guangxi Colleges and Universities (2017KY0359); the Basic Ability Improvement Project of Young and Middle-aged Teachers in Guangxi Colleges and Universities (2017KY036);
- 8.Yoon S, Feng J, Jain AK (2011) Latent fingerprint enhancement via robust orientation field estimation[C]. In: International joint conference on biometrics. IEEE, pp 1–8Google Scholar
- 9.Oh SK, Lee JJ, Park CH et al (2003) New fingerprint image enhancement using directional filter Bank.[J]. Union Agency – Science PressGoogle Scholar
- 12.JianGang C, Jie T, Yu Liang HE et al (2004) Fingerprint enhancement algorithm based on nonlinear diffusion filter [J]. Acta Automat Sin 30(6):854–862Google Scholar