Goal Crossing Interface by Delayed Tracking Projection of Handheld Projector

Abstract

We propose the a process concept of delayed tracking projection (DTP) for handheld projectors, in which (1) a pointer cursor sticks to the optical axis of the projector, (2) a user can moves the cursor in projected contents by moving the projector, and (3) the center of the contents tracks the cursor with a short delay. We combine the this DTP technique with a goal crossing interface. The aim objective of this paper study is to conduct an user experiment to understand determine how to design the an interface which that allows users to perform quick goal crossings at a low false selection rate. The Results of an experiment we conducted with a prototype system revealed the effects of delay, target distance, and target direction on goal crossing performances.