STAG: A Tool for realtime Replay and Analysis of Spatial Trajectory and Gaze Information captured in Immersive Environments

This article describes a toolkit called S.T.A.G for real-time capture, playback, and further analysis of user spatial trajectory and gaze information. We developed S.T.A.G as part of our ongoing inves-tigation of spatial trajectory analysis by capturing real-time user behavior inside a maze-like immersive environment. S.T.A.G can be generally applied to any immersive environment setup and is meant to serve as a toolkit providing deeper insights into user spatial trajectory analyses. The captured user activity log consists of its entire spatial trajectory set and its gaze information captured at an interval of 10 milliseconds per frame. We implemented S.T.A.G using C# and deployed it using the Unity™ real-time game engine.