Section: New Results

Small, Medium, or Large? Estimating the User-Perceived Scale of Stroke Gestures

In [27] , we show that a large consensus exists among users in the way they articulate stroke gestures at various scales (i.e., small, medium, and large) and formulate a simple rule that estimates the user-intended scale of input gestures with 87% accuracy. Our estimator can enhance current gestural interfaces by leveraging scale as a natural parameter for gesture input, reflective of user perception (i.e., no training required). Gesture scale can simplify gesture set design, improve gesture- to-function mappings, and reduce the need for users to learn and for recognizers to discriminate unnecessary symbols.