Title thesis A data quality study for the Positive science wearable eye tracker Title thesis A data quality study for the Positive science wearable eye tracker A data quality study for the Positive science wearable eye tracker

Abstract

Eye tracking is an objective way of studying looking behaviour. It is also a complicated process reliant on many factors to be conducted properly. A lot of things can go wrong which can decrease data quality. Data quality, or poor data quality in this case, is operationalised as a combination of systematic error, variable error and data loss. The influence of these errors on eye tracker data quality has been investigated before, but not for the positive science wearable eye tracker. The influence of the eye trackers measurement range and the subject’s eye-in-head orientation on data quality is investigated. An experiment is conducted to determine the eye trackers measurement range (n=3). The influence of eye-in-head orientation is investigated by having subjects purposefully changing their head orientation during measurement (n=5). Data analysis shows the effective measurement range is smaller than the scene camera image and also that there is an effect of eye-in-head orientation on data quality.