3D Selection Vault

Duo-Reticles

Also known as DR

Two reticles follow the eyes: one shows the current gaze and a second, lagging reticle trails behind it; looking back at the lagging reticle so the two line up selects the object.

How it works

The eye-gaze reticle shows the current gaze point; the inertial reticle moves toward it as a velocity-weighted moving average of recent gaze positions but always stops a minimum distance short of it. Only when the user deliberately moves the gaze onto the inertial reticle do the two align; holding the alignment for about 200–300 ms selects the object under them, replacing a fixed dwell time. In a small study (N=8, HTC Vive with Pupil Labs eye tracker) on a 4×4 picture grid it matched 700 ms gaze dwell in time and errors and was preferred.

Papers