μGlyphe: une Notation Graphique pour Décrire les Microgestes: μGlyph: a Graphical Notation to Describe Microgestures.

Hand microgestures define a promising modality for rapid and eye-free interaction while holding or not holding an object. While studied in many contexts, e.g. in virtual/augmented reality, there is no consensual definition of a microgesture, or a notation to accurately describe a microgesture. The absence of a reference framework leads to ambiguities in the naming or description of microgestures. We propose μGlyph, a graphical notation to precisely describe hand microgestures at different levels of abstraction. This notation is based on a vocabulary of elementary events from the biomechanics of the hand. Each event is associated with a context of execution as well as with optional characteristics such as the finger that performs the micromovement. We investigate the descriptive power of the μGlyph notation when positioned along the existing design axes. Concomitant with this we also describe the most common microgestures in the literature.