COSC Seminars Series - Evaluating 3D Pointing Techniques
“Evaluating 3D Pointing Techniques” by Dr Robert Teather
Pointing (or point selection) tasks are basic interaction operations involving the specification of a point or target for subsequent operations. They are fundamental to modern graphical user interfaces, and are commonly employed in desktop systems, e.g., selecting an icon with the mouse cursor. Efficient pointing techniques are similarly important in three-dimensional (3D) user interfaces including virtual reality and games. Researchers have thus developed and empirically evaluated many such techniques, yet several issues make the evaluation of 3D pointing techniques more difficult than 2D. Moreover, results tend not to be directly comparable between experiments, as these evaluations usually use dramatically different methodologies and measures.
I present the results of several experiments investigating different aspects of 3D pointing. This uses a new experimental paradigm based on well-established methods for comparing 2D pointing interfaces. A hypothesis motivating this work is that the comparatively poor performance of 3D pointing techniques is a primary consideration in the relative absence of commercially successful 3D interactive systems. Hence, my major goal is to establish and validate methods for the direct and fair comparison between 2D and 3D pointing interfaces. These experiments thus also investigate technical and human factors (e.g., latency, noise, task dimensionality) thought to contribute to this performance difference.
When: 2:00 pm, Thursday, Sept. 26