  Natural user interfaces are on the rise. Manufacturers for Augmented,
Virtual, and Mixed Reality head mounted displays are increasingly integrating
new sensors into their consumer grade products, allowing gesture recognition
without additional hardware. This offers new possibilities for bare handed
interaction within virtual environments. This work proposes a hand gesture
authoring tool for object specific grab gestures allowing virtual objects to be
grabbed as in the real world. The presented solution uses template matching for
gesture recognition and requires no technical knowledge to design and create
custom tailored hand gestures. In a user study, the proposed approach is
compared with the pinch gesture and the controller for grasping virtual
objects. The different grasping techniques are compared in terms of accuracy,
task completion time, usability, and naturalness. The study showed that
gestures created with the proposed approach are perceived by users as a more
natural input modality than the others.
