@article{ref1,
title="An unobtrusive measurement method of the horizontal gaze angle",
journal="Behavior research methods, instruments, and computers",
year="2000",
author="Mühlberger, Andreas and Reiss, J. A.",
volume="32",
number="2",
pages="312-321",
abstract="A horizontal gaze angle measurement device is introduced. By combining a photoelectric viewing device to measure the horizontal eye angle with a similar head angle measurement device, it is possible to measure the horizontal gaze angle without using a headrest. After discussion of circuit diagrams and measurement principles, it is shown that the measurements made with the device yield a reasonable precision. The mean absolute measurement error is below 1 degree. This inexpensive and unobtrusive device covers a visual field of about 20 degrees and can be used in parallel with many tasks. Further, data on the successful application of the device in a driving simulation setting are discussed.<p /> <p>Language: en</p>",
language="en",
issn="0743-3808",
doi="",
url="http://dx.doi.org/"
}