| International Journal of Computer Applications | 
| Foundation of Computer Science (FCS), NY, USA | 
| Volume 16 - Number 6 | 
| Year of Publication: 2011 | 
| Authors: M. Kokou Assogba, Amine Nait Ali | 
|  10.5120/2018-2722 | 
M. Kokou Assogba, Amine Nait Ali . Fingerprint characteristic extraction by Ridge Orientation: an Approach for a Supervised Contactless Biometric System. International Journal of Computer Applications. 16, 6 ( February 2011), 14-19. DOI=10.5120/2018-2722
Fingerprints are the most widely used human characteristics for the purpose of people identification. However, touch-based fingerprint systems have some drawbacks due to skin elasticity, inconsistent finger placement, contact pressure, small sensing area, environment conditions and sensor noise. In this paper, we present a contactless fingerprint system based on a supervised contactless image acquisition and a ridge minutiae extraction method based on orientation computation. The fingerprint image acquisition method requires only an ordinary camera. The ridge orientation characteristic extraction is based on a double windowing of the ridge ending points and a single windowing of the ridge bifurcation points.