Gesture Based Interface

Abstract.

Within crime scene analysis, a framework providing interactive visualization and gesture based manipulation of virtual objects, while still seeing the real environment, seems a useful approach for the interpretation of cues and for instructional purposes as well. This paper presents a framework providing a collection of techniques to enhance reliability, accuracy and overall effectiveness of gesture-based interaction, applied to an interactive interpretation and evaluation of a crime scene in an augmented reality environment. The interface layout is visualized via a stereoscopic see-through capable Head Mounted Display (HMD), projecting graphics in the central region of the user’s field of view, floating in a close-at-hand volume. The interaction paradigm concurrently exploits both hands to perform precise manipulation of 3D models of objects, eventually present on the crime scene, or even distance/angular measurements, allowing to formulate visual hypothesis with the lowest interaction effort. A real-time adaptation of interaction to the user’s...