Acquisition and Presentation of Virtual Surrogates for Cultural Heritage Artefacts

In proceedings of EVA 2012 Berlin, pages 50-57, Gesellschaft zur Förderung angewandter Informatik e.V., Nov. 2012

Abstract

The appearance of cultural heritage artefact is perceived by the eyes of an observer. The perception is caused by absorption, scattering and reflection of light. For this process, not only the three-dimensional form but also the materials the object consists of play an important role. To provide a faithful impression, both aspects, shape as well as appearance, have to be acquired, stored and rendered. However, conventional techniques, such as pictures or (possibly textured) geometric 3D models, are not sufficient for that task. Therefore, our research deals with devices and representations that allow for a faithful digital reproduction, a virtual surrogate. The presented technique facilitates the mostly automatic acquisition and processing of small to medium-sized opaque artefacts, the interactive inspection of the digitized objects and the fast and progressive transmission over the Internet.

Keywords: BTF, BTF acquisition, BTF rendering, cultural heritage, geometry, reflectance, Virtual Surrogate

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Additional Material

Presentation slides (ZIP archive, 55 MB)
Timelapse sequence of the BTF capture of an object (WMV video, 29 MB)
Cut timelapse sequence of the structured light capture of an object (WMV video, 10.0 MB)
Timelapse sequence of the disassembly of the movable acquisition setup (WMV video, 4.9 MB)
Timelapse sequence of the assembly of the movable acquisition setup (WMV video, 26 MB)

Bibtex

@INPROCEEDINGS{schwartz-2012-virtualsurrogates,
     author = {Schwartz, Christopher and Klein, Reinhard},
      pages = {50--57},
      title = {Acquisition and Presentation of Virtual Surrogates for Cultural Heritage Artefacts},
  booktitle = {EVA 2012 Berlin},
       year = {2012},
      month = nov,
  publisher = {Gesellschaft zur F{\"o}rderung angewandter Informatik e.V.},
    address = {Volmerstra{\ss}e 3, 12489 Berlin},
   keywords = {BTF, BTF acquisition, BTF rendering, cultural heritage, geometry, reflectance, Virtual Surrogate},
   abstract = {The appearance of cultural heritage artefact is perceived by the eyes of an observer. The perception
               is caused by absorption, scattering and reflection of light. For this process, not only the
               three-dimensional form but also the materials the object consists of play an important role. To
               provide a faithful impression, both aspects, shape as well as appearance, have to be acquired,
               stored and rendered. However, conventional techniques, such as pictures or (possibly textured)
               geometric 3D models, are not sufficient for that task. Therefore, our research deals with devices
               and representations that allow for a faithful digital reproduction, a virtual surrogate. The
               presented technique facilitates the mostly automatic acquisition and processing of small to
               medium-sized opaque artefacts, the interactive inspection of the digitized objects and the fast and
               progressive transmission over the Internet.},
       isbn = {978-3-942709-06-4}
}