Session Chair: Hal Thwaites , Canada

Mobile Bastides: Flexible and Evolvable Business-oriented Contextual Media
Lech Krzanik
University of Oulu, Dept. of Information Processing Science, Finland

Mobile bastides are systems of mobile information services built on top of a collection of conventional physical services distributed in a designated area. Mobile bastides operate by creating, editing, composing and disseminating media of various modalities in order to foster better operation of physical contexts including users and services. For efficient, effective, and satisfactory operation, their basic function has been derived from context-sensitive mobile blogging, and usability has been selected as the fundamental driver for the necessary flexibility and evolvability of mobile bastides. New context models have been proposed that include users as well as business points providing services. To properly handle flexibility and evolvability, improved methods of mobile systems specification and design have been developed. The approach has been validated in a number of experimental applications. In this paper we outline and advocate this new concept of operation and development of mobile contexts, media, and services.

Lenticular 3D Display Using Double Polarizer Slits
Kunio Sakamoto, Miwa Takaki, Rieko Kimura
Interdisciplinary Faculty of Science and Engineering, Shimane University, Japan

A conventional lenticular 3D display system has disadvantages such as having images with divided horizontal resolution and a pseudoscopic image problem. We proposed 3D displays using polarizer slit to solve these problems. However, this simple polarizer slit cannot solve these problems simultaneously. The purpose of this paper is to solve simultaneity. The newly developed projection 3D display has two polarizer slit in order to reconstruct left and right stereoscopic viewing full images without the pseudoscopic. The double polarizer slit can solve the problems of a conventional lenticular 3D display system.

Automatic Pitching Scene Extraction for Baseball Video Annotation
Yuki Shono, Yoshimitsu Aoki
Dept. of Information Science and Engineering, Shibaura Institute of Technology, Japan

Content-based scene indexing has been important technique for effective video contents handling such as scene retrieval and editing. Standard multimedia content descriptor (MPEG7) has been proposed for key scene indexing. As for automatic scene indexing, audio-visual features are most important clues. Many methods have been proposed for effective scene indexing based on those features. In this paper, we propose an automatic key scene detection method for baseball video contents using video features. We regard pitching scenes as key scenes, because they are starting points of all baseball play scenes. If the pitching scenes are detected, they could be effective hints to detect other scenes. In addition, pitching scene digest video can be easily edited by gathering automatically extracted scenes. The pitching scene digest can be useful data for pitching analysis. We extract pitching scenes using color, domain back ground image template. Those templates contain image features unique to pitching scenes. Template matching is applied to video stream, so that target scenes can be detected by judging calculated matching rate. In order to stabilize high matching rate for pitching scene, we detect moving objects (players and telops) robustly using composite object mask generated by brightness difference and hue difference images, and exclude those objects regions from matching target. We experimentally test our method for actual baseball video contents. Can be useful data for pitching analysis and editing of digest news broad casting. We are developing the video indexing support system which users can give text annotations to indexed scenes using MPEG7 format descriptors.

Campus Virtual Tour System Based on Cylindric Panorama
Shaomei Wu, Renshen Wang, Jiaxin Wang
Department of Computer Science, Tsinghua University, P.R.China

Virtual tour is a prominent problem in virtual reality research. In this paper, we review some virtual tour system and propose a project plan of a Virtual tour in Tsinghua University. The core code and the prototype of the system are completed. Experimental results show that our design is feasible and effective. It can bring some feeling of reality and immersion.