Share Email Print

Optical Engineering

Eye gaze estimation from the elliptical features of one iris
Author(s): Wen Zhang; Tai-Ning Zhang; Sheng-Jiang Chang
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The accuracy of eye gaze estimation using image information is affected by several factors which include image resolution, anatomical structure of the eye, and posture changes. The irregular movements of the head and eye create issues that are currently being researched to enable better use of this key technology. In this paper, we describe an effective way of estimating eye gaze from the elliptical features of one iris under the conditions of not using an auxiliary light source, a head fixing equipment, or multiple cameras. First, we provide preliminary estimation of the gaze direction, and then we obtain the vectors which describe the translation and rotation of the eyeball, by applying a central projection method on the plane which passes through the line-of-sight. This helps us avoid the complex computations involved in previous methods. We also disambiguate the solution based on experimental findings. Second, error correction is conducted on a back propagation neural network trained by a sample collection of translation and rotation vectors. Extensive experimental studies are conducted to assess the efficiency, and robustness of our method. Results reveal that our method has a better performance compared to a typical previous method.

Paper Details

Date Published: 1 April 2011
PDF: 10 pages
Opt. Eng. 50(4) 047003 doi: 10.1117/1.3562327
Published in: Optical Engineering Volume 50, Issue 4
Show Author Affiliations
Wen Zhang, Nankai Univ. (China)
Tai-Ning Zhang, Nankai Univ. (China)
Sheng-Jiang Chang, Nankai Univ. (China)

© SPIE. Terms of Use
Back to Top