Two papers at INTERACT 2015
We will present the following two papers at the 15th IFIP TC13 Conference on Human-Computer Interaction (INTERACT 2015):
 | Eduardo Velloso; Jayson Turner; Jason Alexander; Andreas Bulling; Hans Gellersen An Empirical Investigation of Gaze Selection in Mid-Air Gestural 3D Manipulation Inproceedings Proc. of the 15th IFIP TC13 Conference on Human-Computer Interaction (INTERACT 2015), 2015. @inproceedings{Velloso_Interact15a, title = {An Empirical Investigation of Gaze Selection in Mid-Air Gestural 3D Manipulation}, author = {Eduardo Velloso and Jayson Turner and Jason Alexander and Andreas Bulling and Hans Gellersen}, url = {https://perceptual.mpi-inf.mpg.de/files/2015/03/Velloso_Interact15a.pdf}, year = {2015}, date = {2015-03-01}, booktitle = {Proc. of the 15th IFIP TC13 Conference on Human-Computer Interaction (INTERACT 2015)}, journal = {Proc. of the 15th IFIP TC13 Conference on Human-Computer Interaction (INTERACT 2015)}, abstract = {In this work, we investigate gaze selection in the context of mid-air hand gestural manipulation of 3D rigid bodies in monoscopic displays. We present the results of a user study with 12 participants in which we compared the performance of Gaze, a Raycasting technique (2D Cursor) and a Virtual Hand technique (3D Cursor) to select objects in two 3D mid-air interaction tasks. Also, we compared selection confirmation times for Gaze selection when selection is followed by manipulation to when it is not. Our results show that gaze selection is faster and more preferred than 2D and 3D mid-air-controlled cursors, and is particularly well suited for tasks in which users constantly switch between several objects during the manipulation. Further, selection confirmation times are longer when selection is followed by manipulation than when it is not.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } In this work, we investigate gaze selection in the context of mid-air hand gestural manipulation of 3D rigid bodies in monoscopic displays. We present the results of a user study with 12 participants in which we compared the performance of Gaze, a Raycasting technique (2D Cursor) and a Virtual Hand technique (3D Cursor) to select objects in two 3D mid-air interaction tasks. Also, we compared selection confirmation times for Gaze selection when selection is followed by manipulation to when it is not. Our results show that gaze selection is faster and more preferred than 2D and 3D mid-air-controlled cursors, and is particularly well suited for tasks in which users constantly switch between several objects during the manipulation. Further, selection confirmation times are longer when selection is followed by manipulation than when it is not. |
 | Eduardo Velloso; Jason Alexander; Andreas Bulling; Hans Gellersen Interactions Under the Desk: A Characterisation of Foot Movements for Input in a Seated Position Inproceedings Proc. of the 15th IFIP TC13 Conference on Human-Computer Interaction (INTERACT 2015), 2015. @inproceedings{Velloso_Interact15b, title = {Interactions Under the Desk: A Characterisation of Foot Movements for Input in a Seated Position}, author = {Eduardo Velloso and Jason Alexander and Andreas Bulling and Hans Gellersen}, url = {https://perceptual.mpi-inf.mpg.de/files/2015/03/Velloso_Interact15b.pdf}, year = {2015}, date = {2015-03-01}, booktitle = {Proc. of the 15th IFIP TC13 Conference on Human-Computer Interaction (INTERACT 2015)}, journal = {Proc. of the 15th IFIP TC13 Conference on Human-Computer Interaction (INTERACT 2015)}, abstract = {This paper takes a bottom-up approach to characterising foot movements as input for users seated at computing systems. We conducted four user studies to characterise various aspects of foot-based interaction. First, we built unconstrained foot pointing performance models for 16 participants in a seated desktop setting using 1D and 2D ISO 9241-9-compliant Fitts’s Law tasks. Second, we evaluated the effect of the foot and direction in one-direction tasks, finding no effect of the foot used, but a significant effect of the direction in which targets are distributed. Third, we compared the use of one foot against two feet to control two independent variables, finding that while one foot is better suited for tasks with a spatial representation that matches its movement, there is little difference between the two feet techniques when it does not. Fourth, we analysed the overhead caused by introducing a feet-controlled variable in a mouse-based task, finding the feet to be comparable to the scroll wheel. The results of our studies show the feet are an effective method of enhancing our interaction with desktop systems; we use our findings to inform a series of design guidelines for such systems.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } This paper takes a bottom-up approach to characterising foot movements as input for users seated at computing systems. We conducted four user studies to characterise various aspects of foot-based interaction. First, we built unconstrained foot pointing performance models for 16 participants in a seated desktop setting using 1D and 2D ISO 9241-9-compliant Fitts’s Law tasks. Second, we evaluated the effect of the foot and direction in one-direction tasks, finding no effect of the foot used, but a significant effect of the direction in which targets are distributed. Third, we compared the use of one foot against two feet to control two independent variables, finding that while one foot is better suited for tasks with a spatial representation that matches its movement, there is little difference between the two feet techniques when it does not. Fourth, we analysed the overhead caused by introducing a feet-controlled variable in a mouse-based task, finding the feet to be comparable to the scroll wheel. The results of our studies show the feet are an effective method of enhancing our interaction with desktop systems; we use our findings to inform a series of design guidelines for such systems. |
