Dwell time reduction technique using Fitts' law for gaze-based target acquisition

ABSTRACT

We present a dwell time reduction technique for gaze-based target acquisition. We adopt Fitts' Law to achieve the dwell time reduction. Our technique uses both the eye movement time for target acquisition estimated using Fitts' Law (T_e) and the actual eye movement time (T_a) for target acquisition; a target is acquired when the difference between T_e and T_a is small. First, we investigated the relation between the eye movement for target acquisition and Fitts' Law; the result indicated a correlation of 0.90 after error correction. Then we designed and implemented our technique. Finally, we conducted a user study to investigate the performance of our technique; an average dwell time of 86.7 ms was achieved, with a 10.0% Midas-touch rate.

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Index Terms

• Human-centered computing

  • Human computer interaction (HCI)

    • Interaction techniques

      • Pointing