Wednesday, September 8, 2010

Reading #1 Gesture Recognition (Hammond)

Summary
This article provides a good introduction to the field of gesture recognition and details how it differs from sketch recognition in that a gesture must be drawn in the same manner every time in order to be recognized. An explanation of the 13 features developed by Dean Rubine for gesture recognition is then given. These features form the core of many gesture recognition systems used today such as Christopher Long's Quill system which is explained next. Long's system adds 11 features but disregards the 2 features dealing with time from Rubine's original system. Wobbrock's $1 gesture recognizer is then explained to show a different method of gesture recognition. Instead of relying on features, Wobbrock's method computes distances between sample points to determine which class a gesture belongs to.

Discussion
This reading introduces the reader to a few of the fundamental gesture recognition techniques. For someone who is new to the field, it provides insight into how gesture recognition can be accomplished and gives a feel for what features of a gesture are important when attempting recognition. This is done by exploring some of the very important papers in the field of gesture recognition.

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