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IREX V: Guidance for Iris Image Collection



George W. Quinn, JAmes Matey, Elham Tabassi, Patrick J. Grother


This document provides guidance for the proper collection of iris images. Problems that occur during image acquisition can lead to poor quality samples. If the subject was looking down or blinking at the moment of capture, the image should be rejected and a new one acquired. Such problems are fairly simple and straightforward to correct, but require attentiveness on the part of the camera operator. If an image of a closed eye is accepted without scrutiny, no amount of post-capture processing can recover the lost information. For this reason, certain procedures should be followed to ensure only good quality samples are collected.
NIST Interagency/Internal Report (NISTIR) - 8013
Report Number


iris, IREX, sample quality


Quinn, G. , Matey, J. , Tabassi, E. and Grother, P. (2014), IREX V: Guidance for Iris Image Collection, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed June 17, 2024)


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Created June 12, 2014, Updated November 10, 2018