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T ele-education systems promise wider access to education and support for lifelong learning. These systems are either asynchronized or synchronized. Asynchronized systems are relatively simple. An organization can use the Internet to publish hyperlinked multimedia content and reach a wide audience. Yet, most current courseware is simply textbook material(More)
A software infrastructure is fundamental to a Smart Space. Previous proposed software infrastructure for Smart Space (SISS) did not sufficiently address the issue of performance and usability. A new solution, Smart Platform, which is focused on improving these aspects of a SISS, is presented in this paper. To optimize its intermodule communication(More)
Real-time interactive virtual classroom is an important type of distance learning. However currently available systems are insufficient in the support of large-scale user access and cannot accommodate heterogeneous devices and networks access either. Furthermore, these systems are usually desktop-based, which means the teacher experience is completely(More)
The Smart Classroom project explores the challenges and potentials of the Intelligent Environment as a new human-computer interaction paradigm. By constructing an intelligent classroom for tele-education, we try to provide teachers the same experiences as in an ordinary classroom when giving teleeducation lessons. The Smart Classroom could actively observe,(More)
Real-time interactive virtual classrooms play an important role in distance learning. However currently available systems are insufficient in supporting large-scale user access, and they cannot efficiently support accessing with heterogeneous devices and networks. Furthermore, these systems are usually desktop-based, until the result that the teacher’s(More)
In this paper<sup>1</sup>, we present the design of SJSC, an enhanced screen codec proposed by us for live lecture broadcasting. Compared to other screen codecs available, SJSC is more suitable for live broadcasting of a lecture on an unreliable transport medium like the Internet due to two features. First, an error-resilience mechanism controls the impact(More)
Live screencasting involves encoding and streaming the screen content of a PC in real-time. Most existing H.264 rate control (RC) algorithms are designed for natural scenes and do not perform well with the quite different signal characteristics of screencasting. This paper proposes a content-adaptive H.264 RC scheme which classifies screen content as(More)
This paper first presents four essential characteristics of futuristic classroom in the upcoming era of ubiquitous computing: natural user interface, automatic capture of class events and experience, context-awareness and proactive service, collaborative work support. Then it elaborates the details in the design and implementation of the ongoing Smart(More)
In this paper, we present our current work on Intelligent Environment the Smart Classroom project. It is an augmented classroom used for teachers in the distant education. The teacher can write directly on a wall-size media-board or use speech and gesture to conduct the class discussion involving of the distant students. It is just the experience that the(More)