Evaluation of Corneal Refraction in a Model of a Gaze Tracking System

被引：20

作者：

Villanueva, Arantxa ^{[1
]}

Cabeza, Rafael ^{[1
]}

机构：

[1] Univ Publ Navarra, Dept Elect & Elect Engn, Pamplona 31006, Spain

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 2008年 / 55卷 / 12期

关键词：

Corneal refraction; gaze tracking;

D O I：

10.1109/TBME.2008.2002152

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The complexity of corneal refraction modeling complicates geometrical analysis of gaze tracking systems. The task can be accomplished in different ways by means of different approximations. Depending on the assumptions made, errors can arise and the accuracy of trackers can end up determined to an excessive degree by the hardware setup and subject parameters. In this study, keeping the hardware and eve model the same, we compare different methods for evaluation of corneal refraction. Our results show that the approximated methods are sensitive to the calibration of the system and less robust to noise. The nonapproximated method removes any dependency on setup and allows clear differentiation between hardware and subject's calibration.

引用

页码：2812 / 2822

页数：11

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