Virtual Reality and Cultural Heritage on the Web

This invention relates to fire-retardant polyisocyanurate and polyurethane foams having reduced smoke levels when burned and to methods for producing such foams. The foams are produced by incorporating into the polyisocyanurate or polyurethane A. POLYCARBOXYLIC CYCLOALIPHATIC ACIDS HAVING 3 NON-ADJACENT CARBOXYLIC ACID GROUPS OR ANY CONFIGURATION WITH MORE THAN 3 CARBOXYLIC ACID GROUPS UP TO AND INCLUDING ACIDS CONTAINING ONE CARBOXYLIC ACID GROUP PER CARBON ATOM, B. POLYCARBOXYLIC HETEROCYCLOALIPHATIC ACIDS HAVING 3 NON-ADJACENT CARBOXYLIC ACID GROUPS OR ANY CONFIGURATION WITH MORE THAN 3 CARBOXYLIC ACID GROUPS UP TO AND INCLUDING ACIDS CONTAINING ONE CARBOXYLIC ACID GROUP PER CARBON ATOM, C. POLYCARBOXYLIC AROMATIC ACIDS HAVING 3 NON-ADJACENT CARBOXYLIC ACID GROUPS OR ANY CONFIGURATION WITH MORE THAN 3 CARBOXYLIC ACID GROUPS UP TO AND INCLUDING ACIDS CONTAINING ONE CARBOXYLIC ACID GROUP PER CARBON ATOM, D. POLYCARBOXYLIC NAPHTHALENIC ACIDS HAVING 3 NON-ADJACENT CARBOXYLIC ACID GROUPS OR ANY CONFIGURATION WITH MORE THAN 3 CARBOXYLIC ACID GROUPS UP TO AND INCLUDING ACIDS CONTAINING ONE CARBOXYLIC ACID GROUP PER N-2 CARBON ATOMS, WHERE N = TOTAL NUMBER OF CARBON ATOMS IN THE RING SYSTEM.

[1]  Jirí Zára.  Concise Tour to the Virtual Old Prague , 2002, Eurographics.

[2]  Alan Chalmers,et al.  Pre-rendering Acoustics and Illumination for Archaeological Reconstructions , 2000 .

[3]  Hirofumi Chikatsu,et al.  Building extraction and modeling in urban area by image sequence analysis , 2003, IS&T/SPIE Electronic Imaging.

[4]  Christopher Zach,et al.  From Real Cities to Virtual Habitats , 2002 .

[5]  Jitendra Malik,et al.  Reconstructing Polyhedral Models of Architectural Scenes from Photographs , 1996, ECCV.

[6]  Markus Grabner.  WebCAME: a light-weight modular client/server multiresolution rendering system , 2003, Web3D '03.

[7]  S. Zlatanova,et al.  Knowledge-based automatic 3D line extraction from close range images , 2002 .

[8]  Michal Masa,et al.  Virtual House of European Culture: e-AGORA (Electronic Arts for Geographically Open Real Audience) , 2001, International Conference on Virtual Storytelling.

[9]  Marc Levoy,et al.  The digital Michelangelo project: 3D scanning of large statues , 2000, SIGGRAPH.

[10]  Seth J. Teller,et al.  Extracting textured vertical facades from controlled close-range imagery , 1999, Proceedings. 1999 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (Cat. No PR00149).

[11]  Allen R. Hanson,et al.  The Ascender System: Automated Site Modeling from Multiple Aerial Images , 1998, Comput. Vis. Image Underst..

[12]  Jiri Zara,et al.  Virtual Heart of Central Europe , 2004 .

[13]  Michal Masa,et al.  From Textual Chats to Interest Groups in 3D Virtual Space , 2002, Eurographics.

[14]  Reinhard Koch,et al.  Realistic surface reconstruction of 3D scenes from uncalibrated image sequences , 2000, Comput. Animat. Virtual Worlds.