A model for interpreting fingerprint topology

Sherlock, Barry G.; Monro, D.M.

doi:10.1016/0031-3203(93)90006-i

Cited by 212 publications

(141 citation statements)

References 15 publications

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“…Most of them are based on relationship of pixel intensity between pixels [7]. Among them, the most popularly used method for ridge orientation estimation is the gradient-based method or it's variant.…”

Section: IImentioning

confidence: 99%

Towards Accurate Estimation of Fingerprint Ridge Orientation Using BPNN and Ternarization

Reddy¹,

Stephen²

2013

IOSR-JCE

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Section: IImentioning

confidence: 99%

Towards Accurate Estimation of Fingerprint Ridge Orientation Using BPNN and Ternarization

Reddy¹,

Stephen²

2013

IOSR-JCE

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“…Based on the orientation field, singular points are detected following the approach in [5]. Singular orientation field (zero-pole model in [6]) is subtracted from the original orientation field to obtain its continuous component. A feature vector, called the curvature histogram, is extracted from continuous orientation field using the following approach (see Fig.…”

Section: B Detectionmentioning

confidence: 99%

Detecting Altered Fingerprints

Feng

Jain

Ross

2010

2010 20th International Conference on Pattern Recognition

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Abstract-The widespread deployment of Automated Fingerprint Identification Systems (AFIS) in law enforcement and border control applications has prompted some individuals with criminal background to evade identification by purposely altering their fingerprints. Available fingerprint quality assessment software cannot detect most of the altered fingerprints since the implicit image quality does not always degrade due to alteration. In this paper, we classify the alterations observed in an operational database into three categories and propose an algorithm to detect altered fingerprints. Experiments were conducted on both real-world altered fingerprints and synthetically generated altered fingerprints. At a false alarm rate of 7%, the proposed algorithm detected 92% of the altered fingerprints, while a well-known fingerprint quality software, NFIQ, only detected 20% of the altered fingerprints.

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“…Conveniently the fringe orientation (modulo π ) can itself be isotropically estimated by a 2-D energy operator that utilises both first and second order spiral phases [11]. More sophisticated unwrapping techniques, using topological properties of the ridge flow fields [12,13], are also possible. Now we are in a position to generate the complex demodulated image using: …”

Section: Orientation and Direction Estimationmentioning

confidence: 99%

Extreme Compression of Fingerprint Images: Squeezing Fingerprints until the Spirals Pop Out

Larkin¹,

Fletcher²

2006

AIP Conference Proceedings

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Abstract. We propose a new mathematical model for human fingerprint images. The model can be summarized by the phrase "fingerprints are holograms". The model unifies the analysis, compression, classification, matching, and re-synthesis of fingerprints, in a self-consistent formalism. The parsimony of this model is demonstrated by the reconstruction of fingerprint images with extreme compression ratios (typically >200x). At the heart of the method is a recently proposed method for demodulating two-dimensional fringe patterns, such as holograms. Demodulation uses a spiral-phase quadrature transform combined with a two-dimensional orientation estimator that also uses spiral-phase Fourier operators. Finally, the fingerprint decomposition itself achieves compactness by splitting the phase modulation into two unique parts, one of which is a pure spiral-phase function. Spiral-phase inexorably emerges as a central theme of the work.

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A model for interpreting fingerprint topology

Cited by 212 publications

References 15 publications

Towards Accurate Estimation of Fingerprint Ridge Orientation Using BPNN and Ternarization

Towards Accurate Estimation of Fingerprint Ridge Orientation Using BPNN and Ternarization

Detecting Altered Fingerprints

Extreme Compression of Fingerprint Images: Squeezing Fingerprints until the Spirals Pop Out

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