Konferenzbeitrag
Robust Real-Time 3D Time-of-Flight Based Gesture Navigation
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2008
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Zusammenfassung
Contactless Human-Machine-Interfaces (HMIs) are an important issue in
various applications where a haptic interaction with an input device is not possible
or not appropriate. Newly developed Time-of-Flight cameras provide 3D information
of the observed scene in real-time at constant lateral resolutions of thousands of pixels.
Additionally, a gray-value image of the observed scene is available. Our work
compromises three major contributions: First, the robust and real-time capable segmentation
of the hand by incorporating 3D and gray-value information; Second, the
reliable classification of the performed static gesture using robust features; Third, the
design of an HMI which uses the classified gesture as well as the 3D position of the
hand to enable complex and convenient user interactions. The benefit of using a ToF
camera is that the 3D information is just not available from classical 2D camera systems
and thus only with ToF cameras the three dimensions of freedom which are given
for non-haptic interactions can be fully used. Currently, classification rates of 98.2%
are achieved user-dependent and 94.3% user-independent for 6 gestures. Tests with
untrained persons yielded a good to very good acceptance of the HMI.