A simple algorithm for the offline recalibration of eye-tracking data through best-fitting linear transformation

Vadillo, Miguel A., Street, Chris N. H., Beesley, Tom and Shanks, David R. (2015) A simple algorithm for the offline recalibration of eye-tracking data through best-fitting linear transformation. Behavior Research Methods. ISSN 1554-3528

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Abstract

Poor calibration and inaccurate drift correction can pose severe problems for eye-tracking experiments requiring high levels of accuracy and precision. We describe an algorithm for the offline correction of eye-tracking data. The algorithm conducts a linear transformation of the coordinates of fixations that minimizes the distance between each fixation and its closest stimulus. A simple implementation in MATLAB is also presented. We explore the performance of the correction algorithm under several conditions using simulated and real data, and show that it is particularly likely to improve data quality when many fixations are included in the fitting process.

Item Type:	Article
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Schools:	School of Human and Health Sciences
Related URLs:	Author
Depositing User:	Elizabeth Boulton
Date Deposited:	15 Sep 2015 14:15
Last Modified:	15 Sep 2015 14:15
URI:	http://eprints.hud.ac.uk/id/eprint/25712

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