Zoom-and-pick: facilitating visual zooming and precision pointing with interactive handheld projectors

Designing interfaces for interactive handheld projectors is an exiting new area of research that is currently limited by two problems: hand jitter resulting in poor input control, and possible reduction of image resolution due to the needs of image stabilization and warping algorithms. We present the design and evaluation of a new interaction technique, called zoom-and-pick, that addresses both problems by allowing the user to fluidly zoom in on areas of interest and make accurate target selections. Subtle design features of zoom-and-pick enable pixel-accurate pointing, which is not possible in most freehand interaction techniques. Our evaluation results indicate that zoom-and-pick is significantly more accurate than the standard pointing technique described in our previous work. Categories and Subject Descriptors: H.5.2 [User Interfaces]: Interaction styles, Graphical User Interfaces.

• Type: Conference
• Year: 2005
• Where: UIST
• Authors: Clifton Forlines, Ravin Balakrishnan, Paul A. Beardsley, Jeroen van Baar, Ramesh Raskar
• Keywords: Enable Pixel-accurate Pointing, Interaction Techniques, UIST 2005, User Interfaces