Fingerprint image enhancement using filtering techniques
Real-Time Imaging
Time-Recursive Velocity-Adapted Spatio-Temporal Scale-Space Filters
ECCV '02 Proceedings of the 7th European Conference on Computer Vision-Part I
Resolution Selection Using Generalized Entropies of Multiresolution Histograms
ECCV '02 Proceedings of the 7th European Conference on Computer Vision-Part I
An Affine Invariant Interest Point Detector
ECCV '02 Proceedings of the 7th European Conference on Computer Vision-Part I
Fast Anisotropic Gauss Filtering
ECCV '02 Proceedings of the 7th European Conference on Computer Vision-Part I
A Multi-scale Feature Likelihood Map for Direct Evaluation of Object Hypotheses
Scale-Space '01 Proceedings of the Third International Conference on Scale-Space and Morphology in Computer Vision
Empirically Convergent Adaptive Estimation of Grayvalue Structure Tensors
Proceedings of the 24th DAGM Symposium on Pattern Recognition
A modified Gabor filter design method for fingerprint image enhancement
Pattern Recognition Letters
Scale & Affine Invariant Interest Point Detectors
International Journal of Computer Vision
Fingerprint enhancement with dyadic scale-space
Pattern Recognition Letters
International Journal of Computer Vision
Improved structure-adaptive anisotropic filter
Pattern Recognition Letters
Detecting fingerprint minutiae by run length encoding scheme
Pattern Recognition
Extracting image orientation feature by using integration operator
Pattern Recognition
A new adaptive center weighted median filter for suppressing impulsive noise in images
Information Sciences: an International Journal
Ridge based curve and surface reconstruction
SGP '07 Proceedings of the fifth Eurographics symposium on Geometry processing
Design and implementation of Log-Gabor filter in fingerprint image enhancement
Pattern Recognition Letters
Fingerprint ridge orientation estimation based on neural network
ISPRA'06 Proceedings of the 5th WSEAS International Conference on Signal Processing, Robotics and Automation
Local invariant feature detectors: a survey
Foundations and Trends® in Computer Graphics and Vision
Modelling fingerprint ridge orientation using Legendre polynomials
Pattern Recognition
Fingerprint enhancement using oriented diffusion filter
AVBPA'03 Proceedings of the 4th international conference on Audio- and video-based biometric person authentication
Real-time scale selection in hybrid multi-scale representations
Scale Space'03 Proceedings of the 4th international conference on Scale space methods in computer vision
Interest point detection and scale selection in space-time
Scale Space'03 Proceedings of the 4th international conference on Scale space methods in computer vision
Scale Space'03 Proceedings of the 4th international conference on Scale space methods in computer vision
An improved anisotropic diffusion model for detail- and edge-preserving smoothing
Pattern Recognition Letters
Generalized probabilistic scale space for image restoration
IEEE Transactions on Image Processing - Special section on distributed camera networks: sensing, processing, communication, and implementation
Journal of Mathematical Imaging and Vision
Adaptive boosted spectral filtering for progressive fingerprint enhancement
Pattern Recognition
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This work presents two mechanisms for processing fingerprint images; shape-adapted smoothing based on second moment descriptors and automatic scale selection based on normalized derivatives. The shape adaptation procedure adapts the smoothing operation to the local ridge structures, which allows interrupted ridges to be joined without destroying essential singularities such as branching points and enforces continuity of their directional fields. The scale selection procedure estimates local ridge width and adapts the amount of smoothing to the local amount of noise. In addition, a ridgeness measure is defined, which reflects how well the local image structure agrees with a qualitative ridge model, and is used for spreading the results of shape adaptation into noisy areas. The combined approach makes it possible to resolve fine scale structures in clear areas while reducing the risk of enhancing noise in blurred or fragmented areas. The result is a reliable and adaptively detailed estimate of the ridge orientation field and ridge width, as well as a smoothed grey-level version of the input image. We propose that these general techniques should be of interest to developers of automatic fingerprint identification systems as well as in other applications of processing related types of imagery.