Accuracy of Measurements of Eye-Tracking of a human perception on the screen

Abstract: A particular study is a part of the project “Visual Impact” held a t Arcada UAS. The eye-tracking technology is used to track the eye movements by recording fixations and saccades within the time of the test. The eye-tracker records and saves the information that can be presented with heat map, cluster and gaze plots. As all these methods are visual representations of data and don’t show the exact coordinates of the gaze point, this particular work is based on processing the raw statistical data that contains the exact location of each eye at each millisecond of the recording time. A particular research is an exploratory study using raw from the Eye Tracker for the first time.The following questions are addressed: how accurate the measurements of the Eye Tracker are, how accurate the human fixation on the screen with stimulus is and if there’re any differences of human perception within different racial groups. For this investigation fifteen students of Arcada were tested with a test including three parts with different time duration of 5, 7, 9 seconds containing five images created by the researcher for this particular experiment with a figure set in different corners of the screen. All raw data obtained were processed considering the mean coordinates of the gaze points of each particular group of European, African and Asian participants. All data were processed in Excel using Excel formulas and metrics. Thus, we found that the eye-tracker provides very accurate measurements of human fixation on the screen; during the time the human fixation has a bigger deviation explained by the eye tiredness; there’re differences of perception among racial groups. The most complete information about the Eye tracking technology is provided by the book of Holmqvist Eye tracking. A comprehensive Guide to methods and Measures, 2011. Technological issues of creation the experiment was mostly based on the instruction provided by Tobii company An instruction to eye tracking and Tobii Eye Trackers. As it’s a study in process for a further research of the Eye Tracker T120 it's proposed to test the accuracy of the Eye Tracker using an artificial eye