
Chapter | 7 Basic Concepts of Multimodal Analysis
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fusion operates at the lowest level, the signal level, by concatenating
the signals coming from each modality. Obviously, for this, the signals
have to be synchronised. High-level decision fusion operates directly
on decisions taken on the basis of each modality, and this does not
require synchrony. There can also be an intermediate level of fusion,
where some initial information is extracted from each modality, syn-
chronously fused into a single stream and then processed further. A
more detailed analysis is given in Chapter 8.
The multimodal integration method has an important impact on the
reliability ...