Gesture Interaction at a Distance

The aim of this work is to explore, from a perspective of human behavior, which\ud gestures are suited to control large display surfaces from a short distance away; why that is so; and, equally important, how such an interface can be made a reality. A well-known example of the type of interface that is the focus in this thesis is portrayed in the science fiction movie ‘Minority Report’. The lead character of this movie uses hand gestures such as pointing, picking-up and throwing-away to interact with a wall-sized display in a believable way. Believable, because the gestures are familiar from everyday life and because the interface responds predictably. Although only fictional in this movie, such gesture-based interfaces can, when realized, be applied in any environment that is equipped with large display surfaces. For example, in a laboratory for analyzing and interpreting large data sets; in interactive shopping windows to casually browse a product list; and in the operating room to easily access a patient’s MRI scans. The common denominator is that the user cannot or may not touch the display: the interaction occurs at arms-length and larger distances