JOURNAL OF DIGITAL INFORMATION MANAGEMENT V2.I2 JUNE 2004 ABSTRACTS

JOURNAL OF DIGITAL INFORMATION MANAGEMENT

(ISSN 0972-7272) The peer reviewed journal

Volume 2 Issue 4 December 2004

Abstracts

Developing a Visual Lexical Model for Semantic Management of Architectural Visual Data Design of Spatial Ontology for Caravanserais of Silk Roads

Elham Andaroodi(*), Frederic Andres(**),Kinji Ono(***), Pierre Lebigre(****)
National Institute of Informatics, Ecole d’Architecture Paris Val de Seine
(*) Ph.D. student, National Institute of Informatics
(**) Associate Professor, National Institute of Informatics
(***) Professor Emeritus, National Institute of Informatics
National Institute of Informatics, Hitotsubashi 2-1-2-1407 Chiyoda-ku, Tokyo,101-8430, Japan
(****) Professor, Ecole d’Architecture Paris Val de Seine, 14, rue Bonaparte 75006 Paris
Email: elham@grad.nii.ac.jp , andres@nii.ac.jp , ono@nii.ac.jp , lebigre@club-internet.fr
Abstract

In this article we discuss issues related to developing a visual model in order to conceptualize and represent lexical knowledge of the historical architecture domain to improve the semantic management of visual information and reduce the ambiguity problem of data access. This model -domain ontology- provides systematic lexical specification of the components and the relationship links between them that reflects 3 dimensional characteristics of the architectural content for a typology of historical buildings, caravanserais of the Silk Roads. This paper discusses issues about design and data input of the lexical model, specially the multilingual terminology. Further as the process of defining relationships is the main focus of developing a spatial ontology model, this paper will review the necessary background knowledge and the contribution of architectural domain for collecting and creating relationship links in order to cover the attributes of architectural space and the constraints and properties that will influence defining pair of links for the corpus of this research. The initial design of prototype of this model with relationship links using protégé tool is also presented. Finally we conclude with a technical application of this knowledge model which purposes are to support the semantic of visual architectural information and to enhance data management for the users for internet based access.

The city in four dimensions: the Nu.M.E. Project

Francesca BOCCHI
Centro “Gina Fasoli” per la storia delle citta
Dipartimento di Discipline Storiche
Universita di Bologna Viale Berti Pichat,
10 I-40127 BOLOGNA
Via Mascarella 91 I-40126 BOLOGNA
Italy
Email: francesca.bocchi@unibo.it

Abstract

The new computer and communication technologies permit the transfer of research results in to new communication media. In this paper, the Nu. M.E project (New Electronic Museum) relative to visualization is presented that shows the reconstruction of the city of Bologna. The risk of virtual resonstruction is also presented.

Semiautomatic reconstruction of 3d buildings from map data and aerial laser scans

Jens Olav Nygaard,
SINTEF Applied Mathematics,
Forskningsveien 1,
N-0314 Oslo, Norway.
Email: Jens.O.Nygaard@sintef.no

Abstract

We describe an approach for combining outlines of buildings (footprints) from map data, with aerial laser scans in the form of 3d point clouds to reconstruct 3d models of buildings and produce 3d-printer-ready STL files. An interactive and semiautomatic tool was developed. Results and experiences, as well as possible paths to future improvements, are discussed.

Haptics technology in Educational Applications, a Case Study

Michael Pantelios, Labros Tsiknas, Sotiris Christodoulou, Theodore Papatheodorou
HPCLab, Computer Engineering & Informatics Dept., University of Patras, Greece
Email: {pantelio,tsiknas,spc,tsp}@hpclab.ceid.upatras.gr

Abstract

Technology influences the education in many ways. This paper addresses the application of Haptics technology to the educational field. Through this learning procedure, children comprehend ideas concerning several subjects of Science, such as the Newtonian Laws, Space Phenomena and Mechanics Assembly. Haptics Technology improves the level of perception for some areas of the Physic World due to the increased immersion it provides.

Normal Mapping Technology: Parthenon Case Study

Nikos Vassiliou, Joseph Psistakis, Paris Zafiris, Theodore S. Papatheodorou
High Performance Systems Laboratory
Computer Engineering and Informatics Department
University of Patras
26500 Patra - Rio, Greece
Email: {nxv, psistakis, paz, tsp}@hpclab.ceid.upatras.gr

Abstract

This paper describes our recent work on using normal mapping for the real-time visualization of 3D reconstructions. Using this technology, now supported on low-cost graphics cards, we can radically reduce the high geometric complexity of reconstructed or laser-scanned 3D models by adding surface detail through normal map images. These images are generated by using the geometric detail of a high polygon model in a low resolution equivalent version. Thus, per pixel lighting can be achieved on higher frame rates, giving the bandwidth for other lighting effects, such as shadow volumes, with less depth and stencil artifacts, leading to superior image quality. We demonstrate and benchmark this technology on a high resolution 3D reconstruction of the Parthenon of Athens, using OpenGL, showcasing the benefits of the normal mapping technology on similar cultural heritage projects.

Implications of deploying proximity operators in web content processing

P. Vijayakumar
Sri Venkateswara College of Engineering
Siperumbudur 602105. TN
India
Email: vijai@svce.ac.in

Uma Kanjilal
Indira Gandhi National Open University
New Delhi 110 067
India
email: uma_kanjilal@hotmail.com

K.Subbaiah
Durga Villa
Madurai 625021.TN
email: subbiahkasi@yahoo.com

TAV Murthy
INFLIBNET
Gujarat University Campus
Navrangpur
Ahmedabad
India
email: tav@inflibent.ac.in

Abstract

Web content processing is in crisis as it fails to consider concepts while extracting key words. Extracting phrases from the content is worth and significant. The context preservation of key terms in web information collection is addressed in this work. Proper employment of proximity operators could address the web content processing in a more meaningful way.