Book Description
Abstract: "This paper describes a gesture as an alternative for users to convey their commands to the user interface, and discusses the representations of a gesture and the recognition algorithm. The system integrates gesture commands into direct manipulation, so that issuing a command and manipulating an object can be done in one stroke. The idea of high-level representations of gestures and the algorithm for detecting a circle are our contributions to gesture recognition. The advantage of our representations is that the number of the representations required to represent a gesture is small (2 to 4 for the 26 small letters and the 10 digits), so we can save storage space as well as time for the look-up process. The advantage of our detecting alogrithm is that it is good at handling circular gestures. Since many letters and digits contain a circle-like component when hand written, successful recognition of a circle or near-circle increases the success rate of gestural recognition. The system can be trained by each end user to accept variations for any gesture. The number of samples required is small."