9.3. Tracking moving features
9.3.1. Tracking moving objects
So far we have extracted moving objects from their background. To analyse movement, it is necessary to link the appearance of the object in successive frames, to determine the motion trajectory of the moving shape. This is called object tracking. This can be used for recognising moving objects (this can allow automated surveillance of urban areas e.g. to find subjects behaving suspiciously, or just for traffic analysis), to enable us to interact with computers (as in gesture recognition), to give facility for analysing video streams as in vehicle navigation (and for autonomous vehicles). It is actually wider than this, since air–ship traffic systems use radars and moving ships ...
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