- 10/01/2017 at 21:03 #6200StimulantParticipant
The mounting guidelines mention that the user’s eyes should remain within the “track box”, but I’m not able to find specifications of what the size of the track box actually is for the various products. Where is that info located?15/01/2017 at 20:47 #6229Grant [Tobii]Keymaster
Hi @stimulant, The EyeX allows for free head movements while a user’s head is located within a track box, which has the shape of a frustum with the vertex positioned in the center of the device. Thus, the allowable horizontal and vertical head movements change as a function of the distance of the user from the screen.
For example, at a distance of 700mm users may move their head 240mm leftwards or rightwards and 195mm upwards or downwards. The maximum recommended screen size is 24 inches. Considering a user positioned at the far limit of the operating distance (800 mm), the working range of the device in degrees of visual angle is [−18°, 18°] on the x-axis, and [−10.5°, 10.5°] on the y-axis. The device will likely provide gaze estimates at wider gaze angles, to the detriment however of accuracy and precision, particularly in the corners of the monitor. -Gibaldi, A., Vanegas, M., Bex, P.J. et al. Behav Res (2016).
Hope this answers your question!
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