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PART|I Signal Processing, Modelling and Related Mathematical Tools
usually require a multicamera environment or at least one stereo
camera, and are computationally more expensive. They are based
on an analysis-by-synthesis scheme. That is, a search on the model
parameters is performed looking for a minimisation of the error
between the model configuration with a given set of parameters
and the observed scene.
5.4 HEAD ORIENTATION ANALYSIS AND FoA
ESTIMATION
Although face detection is enough for simple HCI, more advanced
interfaces that aim at a higher semantic analysis of the scene require
also an estimation of the head orientation. These applications ...