Inspec keywords: image resolution; gaze tracking; visual databases; convolution; computer vision

Other keywords: boundary tracing; public databases; gaze tracking; eye geometrical characteristics; two-stage algorithm; computer vision community; IC localisation; iris centre localisation; low-cost consumer-grade webcams; ellipse fitting; eye localisation; visible spectrum; convolution-based approach; low-resolution visible images

Subjects: Optical, image and video signal processing; Computer vision and image processing techniques