60 communic Ations of t H e Ac m | F eBr UA ry 2 0 1 1 | voL . 5 4 | No. 2 contributedarticles There is s Tron g evidence that future humancomputer interfaces will enable more natural, intuitive communication between people and all kinds of sensor-based devices, thus more closely resembling human-human communication. Progress in the field of human-computer interaction has introduced innovative technologies that empower users to interact with computer systems in increasingly natural and

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... ways; systems adopting them show increased efficiency, speed, power, and realism. However, users comfortable with traditional interaction methods like mice and keyboards are often unwilling to embrace new, alternative interfaces. Ideally, new interface technologies should be more accessible without requiring long periods of learning and adaptation. They should also provide more natural human-machine communication. As key insights Gestures are useful for computer interaction since they are the most primary and expressive form of human communication. Gesture interfaces for gaming based on hand/body gesture technology must be designed to achieve social and commercial success. no single method for automatic handgesture recognition is suitable for every application; each gesture-recognition algorithm depends on user cultural background, application domain, and environment. 62 communic Ations of t He Ac m | FeBr UA ry 2 0 1 1 | voL . 5 4 | No. 2 contributedarticles Basic communication form We humans use gestures to interact with our environment during the earliest stages of our development. We also communicate using such gestures as body movement, facial expression, and finger pointing. Though much has been written about gesture interfaces, interface technology rarely adopts this media; consequently, expressiveness and naturalness elements are missing from most user interfaces. Hand-gesture applications provide three main advantages over conventional humanmachine interaction systems: Accessing information while maintaining total sterility. Touchless interfaces are especially useful in healthcare environments; Overcoming physical handicaps. Control of home devices and appliances for people with physical handicaps and/or elderly users with impaired mobility; and Exploring big data. Exploration of large complex data volumes and manipulation of high-quality images through intuitive actions benefit from 3D interaction, rather than constrained traditional 2D methods.