Method and apparatus for analysing gestures produced in free space, e.g. for commanding apparatus by gesture recognition
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United States of America Patent
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Feb 19, 2008
Grant Date -
Apr 8, 2004
app pub date -
Oct 5, 2003
filing date -
Oct 7, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The method obtains a signature (S) of a gesture produced in free space, e.g. for producing gesture recognition commands, by deriving at least one time-evolving signal representative of muscular activity involved in producing the gesture and determining at least one value of a parameter yielded by that signal.The method comprises the steps of: time dividing the time-evolving signal (14) into sub-frames (SF1, SF2, . . . ), and for at least one sub-frame: determining at least one parameter value (Psfi) yielded by the signal over at least a part of that sub-frame, and expressing said parameter value as a component of a vector (S) along a dimension thereof specifically allocated to that sub-frame (SFi), the resultant vector yielding the signature (S) of said gesture. The invention also relates to an apparatus producing such signatures and commands by gesture recognition.
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