Study title

Behavioural and eye-movement data gathered from five experiments that examined visual search behaviour/performance in stereoscopic displays. Experiments 1-4 involved examining search of stereoscopic displays under varying levels of overlap (0%, 45%, 90%), and varying task conditions (participants were asked to search for either one or two targets). Each of the first four experiments involved search for a different stimulus type (covering opaque polygons, transparent polygons, household objects and X-ray images respectively). Experiment 5 involved training participants to search through X-ray images for a series of sessions either in the presence of stereoscopic depth, or in flat displays, following by a transfer session to flat displays. Experiments 1-4 involved eye-tracking and Experiment 5 involved eye-tracking every four sessions, as well as in the transfer session.A considerable amount of research has examined the problems associated with searching for multiple target objects, with a particular focus on X-ray baggage screening, where security personnel must search for a number of different objects simultaneously. The goal of this project is to extend the previous research that has been conducted by examining the complexities associated with X-ray images, such as transparency and overlap. Security search for threat items (weapons) within X-ray images of baggage presents a challenge for the visual system because X-ray images do not conform to the conventional rules of solidity, interposition and opacity. In X-ray images, transparency causes colour changes at points of overlap. The colours representing each object interact at areas of overlap in a way that is largely unfamiliar to the visual system. In this project, a series of experiments will be conducted using eye-tracking methodology to understand and explore the complexities involved in searching displays of this type. Furthermore, the displays will be presented in both 2D and 3D, to determine whether any...