Tham khảo tài liệu 'advances in human robot interaction part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Human System Interaction through Distributed Devices in Intelligent Space 89 microphones laser range finders and pressure sensors are taken into account as sensor devices of iSpace the users can interact with the space in various ways. The spatial memory was presented as an interface between users and iSpace. We adopt indication actions of users as operation methods in order to achieve an intuitive and instantaneous way that anyone can apply. A position of a part of user s body which is used for operating the spatial memory is called a human indicator. When a user specifies digital information and indicates a position in the space the system associates the threedimensional position with the information and manages the information as Spatial-Knowledge-Tag SKT . Therefore users can store and arrange computerized information such as digital files robot commands voice messages etc. into the real world. They can also retrieve the stored information in the same way as on storing action . indicating action. Sound interfaces are also implemented in iSpace. The whistle interface which uses frequency of a human whistling as a trigger to call a service was introduced. Since a sound of a whistle is considered as a pure tone the sound is easily detected by iSpace. As a result this interface works well even in the presence of environmental noise. An information display system was also developed to realize interactive informative services. The system consists of a projector and a pan-tilt enabled stand and is able to project an image toward any position. In addition this system can provide easily viewable images by compensating the image distortion and avoiding occlusions. 6. References Cook D. J. Das S. K. 2004 . Smart Environments Technologies Protocols and Applications Wiley Series on Parallel and Distributed Computing Wiley-Interscience ISBN 0-47154448-7 USA. Han S. Lim . Lee . 2007 . An efficient localization scheme for a differentialdriving mobile robot based on
