Reliable and Fast Eye Finding in Close-up Images

This paper describes a method for quickly and robustly localizing the iris and pupil boundaries of a human eye in close-up images. Such an algorithm can be critical for iris identification, or for applications that must determine the subject's gaze direction, e.g., human-computer interaction or driver attentiveness determination. A multi-resolution coarse-to-fine search approach is used, seeking to maximize gradient strengths and uniformities measured across rays radiating from a candidate iris or pupil's central point. An empirical evaluation of 670 eye images, both with and without glasses, resulted in a 98% localization accuracy. The algorithm has also shown robustness to weak illumination and most specular reflections (e.g., at eyewear and cornea), simplifying system component requirements. Rapid execution is achieved on a 750 MHz desktop processor. 1

• Type: Conference
• Year: 2002
• Where: ICPR
• Authors: Theodore A. Camus, Richard P. Wildes
• Keywords: Candidate Iris, Computer Vision, ICPR 2002, Iris Identification, MHz Desktop Processor