A gesture recognition system includes: elements for detecting and
generating a signal corresponding a number of markers arranged on an
object, elements for processing the signal from the detecting elements,
members for detecting position of the markers in the signal. The markers
are divided into first and second set of markers, the first set of
markers constituting a reference position and the system comprises
elements for detecting movement of the second set of markers and
generating a signal as a valid movement with respect to the reference
position.