Specifying gestures by example

TLDR

Gesture‑based interfaces offer an alternative to traditional input methods by allowing users to specify objects, operations, and parameters with a single intuitive gesture, yet they remain under‑researched because of the difficulty in creating them. The study introduces GRANDMA, a toolkit designed to enable rapid addition of gestures to direct manipulation interfaces. GRANDMA employs a trainable single‑stroke gesture recognizer that facilitates the integration of gestures into existing interfaces.

Abstract

Gesture-Based interfaces offer an alternative to traditional keyboard, menu, and direct manipulation interfaces. The ability to specify objects, an operation, and additional parameters with a single intuitive gesture appeals to both novice and experienced users. Unfortunately, gesture-based interfaces have not been extensively researched, partly because they are difficult to create. This paper describes GRANDMA, a toolkit for rapidly adding gestures to direct manipulation interfaces. The trainable single-stroke gesture recognizer used by GRANDMA is also described.