TY - JOUR
T1 - Extended Fitts’ model of pointing time in eye-gaze input system - Incorporating effects of target shape and movement direction into modeling
AU - Murata, Atsuo
AU - Fukunaga, Daichi
N1 - Funding Information:
This work was partly supported by Grant-in Aid for Scientific Research (B) ( 22310101 & 26282095 ), Japan Society for the Promotion of Science (JSPS) .
PY - 2018/4
Y1 - 2018/4
N2 - This study attempted to investigate the effects of the target shape and the movement direction on the pointing time using an eye-gaze input system and extend Fitts’ model so that these factors are incorporated into the model and the predictive power of Fitts’ model is enhanced. The target shape, the target size, the movement distance, and the direction of target presentation were set as within-subject experimental variables. The target shape included: a circle, and rectangles with an aspect ratio of 1:1, 1:2, 1:3, and 1:4. The movement direction included eight directions: upper, lower, left, right, upper left, upper right, lower left, and lower right. On the basis of the data for identifying the effects of the target shape and the movement direction on the pointing time, an attempt was made to develop a generalized and extended Fitts’ model that took into account the movement direction and the target shape. As a result, the generalized and extended model was found to fit better to the experimental data, and be more effective for predicting the pointing time for a variety of human-computer interaction (HCI) task using an eye-gaze input system.
AB - This study attempted to investigate the effects of the target shape and the movement direction on the pointing time using an eye-gaze input system and extend Fitts’ model so that these factors are incorporated into the model and the predictive power of Fitts’ model is enhanced. The target shape, the target size, the movement distance, and the direction of target presentation were set as within-subject experimental variables. The target shape included: a circle, and rectangles with an aspect ratio of 1:1, 1:2, 1:3, and 1:4. The movement direction included eight directions: upper, lower, left, right, upper left, upper right, lower left, and lower right. On the basis of the data for identifying the effects of the target shape and the movement direction on the pointing time, an attempt was made to develop a generalized and extended Fitts’ model that took into account the movement direction and the target shape. As a result, the generalized and extended model was found to fit better to the experimental data, and be more effective for predicting the pointing time for a variety of human-computer interaction (HCI) task using an eye-gaze input system.
KW - Eye-gaze input system
KW - Fitts’ modeling
KW - HCI
KW - Movement direction
KW - Pointing time
KW - Target shape
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U2 - 10.1016/j.apergo.2017.10.019
DO - 10.1016/j.apergo.2017.10.019
M3 - Article
C2 - 29409655
AN - SCOPUS:85032988745
VL - 68
SP - 54
EP - 60
JO - Applied Ergonomics
JF - Applied Ergonomics
SN - 0003-6870
ER -