Guidance of eye movements on a gaze-contingent display
Michael Dörr, Thomas Martinetz, Karl R. Gegenfurtner, Erhardt Barth · 2004
Abstract. We present a system that allows to display and manipulate high resolution image sequences as a function of gaze in real time. An eye tracker was connected to a video workstation and software was developed with an emphasis on low latency, so that the whole system is capable of reacting to an eye movement within less than 30 ms. In first experiments with this system, we measured the effect of presenting peripheral visual patterns on the subjects ' scan paths when viewing 20 s long video clips of natural outdoor environments. Small red squares or looming patterns were overlaid on the video for 120 ms at locations about 12º away from the position of gaze. The actual location was chosen randomly from candidate locations that had some minimal amount of saliency (spatio-temporal curvature). Results show that for some subjects, about 70 % of the peripheral stimuli triggered a saccade to the desired location, while in the worst case this rate was about 20%. Our research aims at creating new forms of visual communication and vision-based interaction [1].