
Chapter 8
Multimodal Information
Fusion
Norman Poh and Josef Kittler
University of Surrey, UK
8.1. Introduction 153
8.2. Levels of Fusion 156
8.3. Adaptive versus Non-Adaptive Fusion 158
8.4. Other Design Issues 162
8.5. Conclusions 165
References 165
8.1 INTRODUCTION
Humans interact with each other using different modalities of
communication. These include speech, gestures, documents, etc. It
is therefore natural that human–computer interaction (HCI) should
facilitate the same multimodal form of communication. To capture
this information, one uses different types of sensors, i.e., microphones
to capture the audio signal, cameras to capture life video images, ...