@InProceedings{MorimotoSantMuni:2005:AuIrSe,
author = "Morimoto, Carlos Hitoshi and Santos, Thiago Teixeira and Muniz,
Adriano Saturno",
affiliation = "{Department of Computer Science of the Institute of Mathmatics and
Statistics of the University of S{\~a}o Paulo}",
title = "Automatic iris segmentation using active near infra red lighting",
booktitle = "Proceedings...",
year = "2005",
editor = "Rodrigues, Maria Andr{\'e}ia Formico and Frery, Alejandro
C{\'e}sar",
organization = "Brazilian Symposium on Computer Graphics and Image Processing, 18.
(SIBGRAPI)",
publisher = "IEEE Computer Society",
address = "Los Alamitos",
keywords = "iris segmentation, biometrics, pupil detection, near infra red
lighting.",
abstract = "This paper introduces a fast, robust and accurate iris
segmentation technique based on active lighting. The geometry of
the light sources, a single camera and the eye facilitates the
detection of the pupil and the automatic selection of the most
appropriate image for biometric identification from the video
stream, minimizing the effects of noise, distortion and occlusion
during the image acquisition process. Two near infrared (NIR)
light sources (that are invisible to the human eye) are
synchronized with the video signal. One of the light sources is
placed near the optical axis of the camera, and generates a bright
pupil image. The second light is placed off-axis, generating dark
pupil images. These two images can be easily combined to segment
the pupil region, and the corneal reflection of the light sources
can be used to select best quality images. The pupil position is
then used to segment the iris and eyelids using a coarse-to-fine
strategy. Experimental results with a real-time prototype show the
quality of the iris segmentation.",
conference-location = "Natal, RN, Brazil",
conference-year = "9-12 Oct. 2005",
doi = "10.1109/SIBGRAPI.2005.14",
url = "http://dx.doi.org/10.1109/SIBGRAPI.2005.14",
language = "en",
ibi = "6qtX3pFwXQZeBBx/GN2sy",
url = "http://urlib.net/ibi/6qtX3pFwXQZeBBx/GN2sy",
targetfile = "morimotoc_iris.pdf",
urlaccessdate = "2024, Apr. 28"
}