Fingerprint pattern classification
Pattern Recognition
Fingerprint Image Enhancement: Algorithm and Performance Evaluation
IEEE Transactions on Pattern Analysis and Machine Intelligence
Systematic Methods for the Computation of the Directional Fields and Singular Points of Fingerprints
IEEE Transactions on Pattern Analysis and Machine Intelligence
Handbook of Fingerprint Recognition
Handbook of Fingerprint Recognition
Fingerprint Reference Point Detection Based on Local Axial Symmetry
ICPR '06 Proceedings of the 18th International Conference on Pattern Recognition - Volume 01
The New Focal Point Localization Algorithm for Fingerprint Registration
ICPR '06 Proceedings of the 18th International Conference on Pattern Recognition - Volume 04
Singular point detection by shape analysis of directional fields in fingerprints
Pattern Recognition
Fingerprint reference-point detection
EURASIP Journal on Applied Signal Processing
Registration of fingerprints by complex filtering and by 1d projections of orientation images
AVBPA'05 Proceedings of the 5th international conference on Audio- and Video-Based Biometric Person Authentication
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A focal point is a kind of singular points, closely related to a core point, which can be derived from curvature of fingerprint ridges and valleys. It is expected that the focal point is more reliable than the core point in case of low quality fingerprint. This paper proposes a new efficient focal point localization method based on a half concentric lens model. The half concentric lens window, with directional adaptive, accelerates convergence of a focal point localization process rapidly. Moreover, concentric lens similarity factor is introduced in order to measure orientation and stability of an extracted focal point. From experimental results, the proposed scheme is out-performed most of singular point detection schemes in literature in term of location accuracy and consistency. For computational complexity, algorithm requires average 75 millisecond execution-time from original fingerprint to a unique focal point.