WebGL-based Streaming and Presentation Framework for Bidirectional Texture Functions

Christopher Schwartz, Roland Ruiters, Michael Weinmann und Reinhard Klein
In proceedings of The 12th International Symposium on Virtual Reality, Archeology and Cultural Heritage VAST 2011, Eurographics Association, Prato, Italy, pages 113-120, Eurographics Association, Okt. 2011
 

Abstract

Museums and Cultural Heritage institutions have a growing interest in presenting their collections to a broader community via the Internet. The photo-realistic presentation of interactively inspectable digital 3D replicas of artifacts is one of the most challenging problems in this field. For this purpose, we seek not only a 3D geometry but also a powerful material representation capable of reproducing the full visual appeal of an object. In this paper, we propose a WebGL-based presentation framework in which reflectance information is represented via Bidirectional Texture Functions. Our approach works out-of-the-box in modern web browsers and allows for the progressive transmission and interactive rendering of digitized artifacts consisting of 3D geometry and reflectance information. We handle the huge amount of data needed for this representation by employing a novel progressive streaming approach for BTFs which allows for the smooth interactive inspection of a steadily improving version during the download.

Stichwörter: BTF compression, BTF rendering, BTF streaming, cultural heritage, public dissemination, WebGL

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Bibtex

@INPROCEEDINGS{schwartz-2011-webglbtfstreaming,
        author = {Schwartz, Christopher and Ruiters, Roland and Weinmann, Michael and Klein, Reinhard},
         pages = {113--120},
         title = {WebGL-based Streaming and Presentation Framework for Bidirectional Texture Functions},
     booktitle = {The 12th International Symposium on Virtual Reality, Archeology and Cultural Heritage VAST 2011},
          year = {2011},
         month = oct,
     publisher = {Eurographics Association},
      location = {Prato, Italy},
  organization = {Eurographics Association},
          note = {Best Paper Award},
      keywords = {BTF compression, BTF rendering, BTF streaming, cultural heritage, public dissemination, WebGL},
      abstract = {Museums and Cultural Heritage institutions have a growing interest in presenting their collections
                  to a broader community via the Internet. The photo-realistic presentation of interactively
                  inspectable digital 3D replicas of artifacts is one of the most challenging problems in this field.
                  For this purpose, we seek not only a 3D geometry but also a powerful material representation capable
                  of reproducing the full visual appeal of an object. In this paper, we propose a WebGL-based
                  presentation framework in which reflectance information is represented via Bidirectional Texture
                  Functions. Our approach works out-of-the-box in modern web browsers and allows for the progressive
                  transmission and interactive rendering of digitized artifacts consisting of 3D geometry and
                  reflectance information. We handle the huge amount of data needed for this representation by
                  employing a novel progressive streaming approach for BTFs which allows for the smooth interactive
                  inspection of a steadily improving version during the download.},
          issn = {1811-864X},
          isbn = {978-3-905674-34-7},
           url = {http://diglib.eg.org/EG/DL/WS/VAST/VAST11/113-120.pdf},
           doi = {10.2312/VAST/VAST11/113-120}
}