Bare-Handed 3D Drawing in Augmented Reality

摘要: Head-mounted augmented reality (AR) enables embodied in situ drawing three dimensions (3D). We explore 3D interactions based on uninstrumented, unencumbered (bare) hands that preserve the user's ability to freely navigate and interact with physical environment. derive alternative interaction techniques supporting bare-handed AR from literature by analysing several envisaged use cases. The are evaluated a controlled user study examining distinct tasks: planar drawing, path description, object reconstruction. results indicate continuous freehand supports faster line creation than control point alternatives, although reduced accuracy. User preferences for different mixed vary considerably between tasks, highlighting value of diverse flexible interactions. combined effectiveness these is illustrated an example application drawing.