Analysis of eye gaze points based on visual search

Abstract

Recently there have been a lot of researches on eye gaze points in naturalistic scenes. But in many of these studies, subjects are instructed to view scenes without any particular task. So what are they different in visual research? In this paper, we provide detailed analysis of the eye gaze points from 11 subjects' eye movements when they performed a search task in 1307 images. The eye tracking data was analyzed in the following four aspects: agreement among subjects, center bias, difference of gaze points for each stimulus between target-present and target absent stimuli and the distribution of gaze points in the target-present image, The results of the analysis show that during visual search tasks, in which subjects are asked to find a particular target in a display, target object playa dominant role in the guidance of eye movements.