This book comprehensively covers all areas of this growing industry, including facial and body movements, body modeling, simulation of hair, facial expressive speech simulation and communication, interaction with 3D objects, rendering skin and clothes and the standards for Virtual Humans. Presenting the concept of behavioral animation, crowd simulation, inter-communication between virtual humans, and interaction between real humans and autonomous virtual humans Addresses advanced topics of hair representation and cloth animation with applications in fashion design Discusses the standards for Virtual Humans, such as MPEG-4 Face Animation and Animation MPEG-4 Board.