29-11-2012, 03:31 PM
AUTOMATIC FINGERPRINT IDENTIFICATION SYSTEM
AUTOMATIC FINGERPRINT IDENTIFICATION SYSTEM.ppt (Size: 1.28 MB / Downloads: 675)
INTRODUCTION
History of Fingerprints
Fingerprint Matching
Fingerprint Classification
Fingerprint Image Enhancement
History of Fingerprints
Modern fingerprint techniques were initiated in the late 16th century.
Individual epidermal ridges and furrows have different characteristics for different 10 fingers.
The configuration types are individually variable.
The configurations and minute details of individual ridges and furrows are permanent and unchanging for a given finger.
Fingerprint Matching
Oldest method which has been successfully used in numerous applications.
Minutiae points are local ridge characteristics that occur at either a ridge bifurcation or a ridge ending.
Fingerprint matching techniques can be placed into two categories:
Minutiae-based
Correlation based
Fingerprint Image Enhancement
A critical step in automatic fingerprint matching is to automatically and reliably extract minutiae from the input fingerprint images.
We have to develop a fast fingerprint enhancement algorithm, which can adaptively improve the clarity of ridge and furrow structures of input fingerprint images based on the estimated local ridge orientation and frequency.