ABSTRACT
In this paper we would like to introduce the main ideas about the news new paradigms for communications between computers and persons. In the late 1800s, Marey and Muybridge conducted independent studies of human and animal motion by shooting multiple photographs of moving subjects over a short period of time (Muybridge, 1955), (Muybridge, 1957). Actually at the present time, the study of human movement using a computer is very useful and can apply be applied to many areas. One such of these applications is the advanced perceptual three-dimensional interfaces.
For achieve these advanced and natural interaction new types of devices and interfaces must be designed. The process to capture human gestures and motion analysis in front using a commercial camera is needed to be able in order to allow computers to understand our actions and react in a intelligent manner to interact together in a multimodal application context.
This problem is a challenging topic in many areas. In computer graphics, is very complex to animate realistic articulated figures like humans or animals. In computer vision, is very interesting to design new algorithms to detect, track, and recover articulate motion; for example an avatar making complex actions in front a digital video camera. And finally, the intelligent agents must be carefully designed to understand the natural and incomplete information given by the end-user, and driven to drive correctly the adequate actions to reach the final objectives in the practical application domain.
We would like to present in the next sections basic concepts and definitions in multimodal and perceptual user interfaces, a brief state of the art and some examples of virtual and augmented systems applied to games and disable people.
