Nonintrusive iris image acquisition system based on a pan-tilt-zoom camera and light stripe projection

Soweon Yoon; Ho Gi Jung; Kang Ryoung Park; Jai Hie Kim

doi:10.1117/1.3095905

1 March 2009 Nonintrusive iris image acquisition system based on a pan-tilt-zoom camera and light stripe projection

Soweon Yoon, Ho Gi Jung, Kang Ryoung Park, Jai Hie Kim

Author Affiliations +

Optical Engineering, Vol. 48, Issue 3, 037202 (March 2009). https://doi.org/10.1117/1.3095905

Abstract

Although iris recognition is one of the most accurate biometric technologies, it has not yet been widely used in practical applications. This is mainly due to user inconvenience during the image acquisition phase. Specifically, users try to adjust their eye position within small capture volume at a close distance from the system. To overcome these problems, we propose a novel iris image acquisition system that provides users with unconstrained environments: a large operating range, enabling movement from standing posture, and capturing good-quality iris images in an acceptable time. The proposed system has the following three contributions compared with previous works: (1) the capture volume is significantly increased by using a pan-tilt-zoom (PTZ) camera guided by a light stripe projection, (2) the iris location in the large capture volume is found fast due to 1-D vertical face searching from the user's horizontal position obtained by the light stripe projection, and (3) zooming and focusing on the user's irises at a distance are accurate and fast using the estimated 3-D position of a face by the light stripe projection and the PTZ camera. Experimental results show that the proposed system can capture good-quality iris images in 2.479 s on average at a distance of 1.5 to 3 m, while allowing a limited amount of movement by the user.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Soweon Yoon, Ho Gi Jung, Kang Ryoung Park, and Jai Hie Kim "Nonintrusive iris image acquisition system based on a pan-tilt-zoom camera and light stripe projection," Optical Engineering 48(3), 037202 (1 March 2009). https://doi.org/10.1117/1.3095905

Published: 1 March 2009

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available