Accelerometer-based Chinese Tra±c PoliceGesture Recognition System
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Graphical Abstract
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Abstract
When an automatic tra±c light system is
not working e.g. due to tra±c jam, it is necessary for traf-
¯c police to control the tra±c by gestures. In this paper,
the design of a system to synchronize tra±c lights with
tra±c police gestures is presented. The gesture data are
extracted by ¯xing a 3-axis accelerometer on the back of
each hand. Signals obtained from the accelerometers are
transformed into arm motion and palm orientation. A hi-
erarchical classi¯er is designed to recognize the gestures, in
which fuzzy rules are used to enable vague gesture recog-
nition. An embedded micro-processor system has been de-
veloped for real-time gesture recognition. Wireless mod-
ules are used for communication and a digital compass is
used to identify the direction, to which a tra±c policeman
faces. The integrate system has been tested, and the fea-
sibility of the system to synchronize tra±c lights has been
demonstrated.
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