Seamless Texturing of Archaeological Data

Information

• Publication Type: Conference Paper
• Workgroup(s)/Project(s):
  • Photo-Guide: Image-Based City Exploration
• Date: October 2013
• ISBN: 978-1-4799-3168-2
• Publisher: IEEE
• Note: DOI: 10.1109/DigitalHeritage.2013.6743749
• Location: Marseille, France
• Lecturer: Michael Birsak
• Booktitle: Digital Heritage International Congress (DigitalHeritage), 2013
• Conference date: 28. October 2013 – 1. November 2013
• Pages: 265 – 272
• Keywords: digital cultural heritage, out-of-core real-time rendering, seamless texturing, virtual texturing

Abstract

In this paper we propose a framework for out-of-core real-time rendering of high-quality textured archaeological data-sets. Our input is a triangle mesh and a set of calibrated and registered photographs. Our system performs the actual mapping of the photos to the mesh for high-quality reconstructions, which is a task referred to as the labeling problem. Another problem of such mappings are seams that arise on junctions between triangles that contain information from different photos. These are are approached with blending methods, referred to as leveling. We address both problems and introduce a novel labeling approach based on occlusion detection using depth maps that prevents texturing of parts of the model with images that do not contain the expected region. Moreover, we propose an improved approach for seam-leveling that penalizes too large values and helps to keep the resulting colors in a valid range. For high-performance visualization of the 3D models with a huge amount of textures, we make use of virtual texturing, and present an application that generates the needed texture atlas in significantly less time than existing scripts. Finally, we show how the mentioned components are integrated into a visualization application for digitized archaeological site.

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BibTeX

@inproceedings{birsak-2013-sta,
  title =      "Seamless Texturing of Archaeological Data",
  author =     "Michael Birsak and Przemyslaw Musialski and Murat Arikan and
               Michael Wimmer",
  year =       "2013",
  abstract =   "In this paper we propose a framework for out-of-core
               real-time rendering of high-quality textured archaeological
               data-sets. Our input is a triangle mesh and a set of
               calibrated and registered photographs. Our system performs
               the actual mapping of the photos to the mesh for
               high-quality reconstructions, which is a task referred to as
               the labeling problem. Another problem of such mappings are
               seams that arise on junctions between triangles that contain
               information from different photos. These are are approached
               with blending methods, referred to as leveling. We address
               both problems and introduce a novel labeling approach based
               on occlusion detection using depth maps that prevents
               texturing of parts of the model with images that do not
               contain the expected region. Moreover, we propose an
               improved approach for seam-leveling that penalizes too large
               values and helps to keep the resulting colors in a valid
               range. For high-performance visualization of the 3D models
               with a huge amount of textures, we make use of virtual
               texturing, and present an application that generates the
               needed texture atlas in significantly less time than
               existing scripts. Finally, we show how the mentioned
               components are integrated into a visualization application
               for digitized archaeological site.",
  month =      oct,
  isbn =       "978-1-4799-3168-2 ",
  publisher =  "IEEE",
  note =       "DOI: 10.1109/DigitalHeritage.2013.6743749",
  location =   "Marseille, France",
  booktitle =  "Digital Heritage International Congress (DigitalHeritage),
               2013",
  pages =      "265--272 ",
  keywords =   "digital cultural heritage, out-of-core real-time rendering,
               seamless texturing, virtual texturing",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2013/birsak-2013-sta/",
}