Proceedings ArticleDOI
Faithful, compact and complete digitization of cultural heritage using a full-spherical scanner
Tobias Nöll,Johannes Köhler,Gerd Reis,Didier Stricker +3 more
- pp 15-22
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TLDR
This work uses the worlds first full-spherical scanner to propose a user friendly reconstruction process that is specifically tailored to the needs for digitizing and representing cultural heritage artifacts, and specifically addresses the problem that invaluable or fragile artifacts may not be turned over during acquisition.Abstract:
Effective documentation and display of ancient objects is an essential task in the field of cultural heritage conservation Digitization plays an important role for the process of creating, preserving and accessing objects in digital space Up to the present day, industrial scanners are used for this task that focus mainly on the detailed reconstruction of the object's geometry only However, important for a faithful digital presentation of the object is in particular the appearance information, ie a description of the used materials and how they interact with incident light Using the worlds first full-spherical scanner, we propose a user friendly reconstruction process that is specifically tailored to the needs for digitizing and representing cultural heritage artifacts More precisely, our hardware specifically addresses the problem that invaluable or fragile artifacts may not be turned over during acquisition Nevertheless, we can digitize the object completely including its bottom Further, by integrating appearance information into our digitization we achieve a far more faithful digital replica with a quality comparable to a real picture of the object But in contrast to a static picture, our representation allows to interactively change the viewing and lighting directions freely In addition, the results are very memory efficient, consuming only several MB per scanned object and hence are suited to be accessed and visualized interactively in a web browser In cooperation with museums and a private collector, we digitized several cultural heritage artifacts in order to demonstrate the feasibility of the proposed processread more
Citations
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Journal ArticleDOI
Design and implementation of practical bidirectional texture function measurement devices focusing on the developments at the University of Bonn.
TL;DR: This work idey a set of necessary attributes and establishes a general categorization of different designs that have been realized, demonstrating advantages and disadvantages of different system designs with respect to the previously established attributes.
Proceedings ArticleDOI
Advances in geometry and reflectance acquisition (course notes)
Michael Weinmann,Reinhard Klein +1 more
TL;DR: This short course sheds light on the acquisition ecosystem with three of its most important components that consist in accurate acquisition methods for geometry and reflectance as well as strategies towards an efficient acquisition pipeline to fulfill the demands of industry with respect to mass digitization of 3D contents.
Journal ArticleDOI
Fully Automatic, Omnidirectional Acquisition of Geometry and Appearance in the Context of Cultural Heritage Preservation
TL;DR: Using the world’s first full-spherical scanner, this work proposes a user-friendly reconstruction process that is specifically tailored to the needs of digitizing and representing cultural heritage artifacts, and specifically addresses the problem that invaluable or fragile artifacts may not be turned over during acquisition.
Proceedings ArticleDOI
Spatially-Varying Diffuse Reflectance Capture Using Irradiance Map Rendering for Image-Based Modeling Applications
TL;DR: A method for acquiring the diffuse per-point reflectance of the modelled object, as part of the image acquisition work flow, only adding one extra captured image and an irradiance rendering step, making it easy for anyone to digitize physical objects to create 3D content for AR/VR using only consumer grade hardware.
High-Quality Multi-Spectral Reflectance Acquisition with X-Rite TAC7
TL;DR: Improvements in color-accuracy and the overall quality of the appearance capture are demonstrated by relighting accurately digitized objects under varying illumination conditions with the TAC7 device.
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