How we interface and interact with computing, communications andentertainment devices is going through revolutionary changes, withnatural user inputs based on touch, voice, and vision replacing oraugmenting the use of traditional interfaces based on the keyboard,mouse, joysticks, etc. As a result, displays are morphing fromone-way interface devices that merely show visual content totwo-way interaction devices that provide more engaging andimmersive experiences. This book provides an in-depth coverage ofthe technologies, applications, and trends in the rapidly emergingfield of interactive displays enabled by naturalhuman-interfaces.Key features:Provides a definitive reference reading on all the touchtechnologies used in interactive displays, including theiradvantages, limitations, and future trends.Covers the fundamentals and applications of speech input,processing and recognition techniques enabling voice-basedinteractions.Offers a detailed review of the emerging vision-based sensingtechnologies, and user interactions using gestures of hands, body,face, and eye gazes.Discusses multi-modal natural user interface schemes whichintuitively combine touch, voice, and vision for life-likeinteractions.Examines the requirements and technology status towardsrealizing “true” 3D immersive and interactivedisplays.