REPORT Marcel02-34IRR/IDIAP Gestures for Multi-Modal Interfaces: A Review Marcel, Sébastien EXTERNAL http://publications.idiap.ch/attachments/reports/2002/rr02-34.pdf PUBLIC Idiap-RR-34-2002 2002 IDIAP This document presents a review on gestures for multi-modal interfaces and focus on hand gestures. It first introduces the role that the gesture modality plays in human communication. It then describes different types of gestures. Finally, it gives an overview of many techniques for the recognition of hand gestures.