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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)
The Ambient Kitchen is a high fidelity prototype for exploring the design of pervasive computing algorithms and applications for everyday environments. The environment integrates data projectors, cameras, RFID tags and readers, object mounted accelerometers, and under-floor pressure sensing using a combination of wired and wireless networks. The Ambient(More)
Multi-level annotation of images is a promising solution to enable semantic image retrieval by using various keywords at different semantic levels. In this paper, we propose a multi-level approach to interpret and annotate the semantics of natural images by using both the dominant image components and the relevant semantic image concepts. In contrast to the(More)
For video summarization and retrieval, one of the important modules is to group temporal-spatial coherent shots into high-level semantic video clips namely scene segmentation. In this paper, we propose a novel scene segmentation and categorization approach using normalized graph cuts(NCuts). Starting from a set of shots, we first calculate shot similarity(More)
Multi-level annotation of images is a promising solution to enable more effective semantic image retrieval by using various keywords at different semantic levels. In this paper, we propose a multi-level approach to annotate the semantics of <b><i>natural scenes</i></b> by using both the dominant image components and the relevant semantic concepts. In(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)
This paper presents a novel approach to automatic traffic monitoring using 2D spatiotemporal images. A TV camera is mounted above a highway to monitor the traffic through two slice windows, and a panoramic view image and an epipolar plane image are formed for each lane. Our real-time vision system for automatic traffic monitoring, VISATRAM, is an(More)
This paper proposes a novel multi-layer homography algorithm for background modeling from a free-moving camera. Background is composed of many planes. Different planes satisfy with different homographies which can be found by our algorithm. Each pixel except for the moving pixel definitely belongs to some plane. Rectified by the corresponding homography,(More)
This paper presents a novel approach to stabilize the output of video camera installed on a moving vehicle in a rugged environment. A 2.5-D interframe motion model is proposed so that the stabilization system can perform in situations where significant depth changes are present and the camera has both rotation and translation. Inertial motion filtering is(More)