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Automatic 3D Object Reconstruction from Multiple Images for Architectural, Cultural Heritage and Archaeological Applications Using Open-Source Software and Web Services Automatische 3D-Objektrekonstruktion aus digitalen Bilddaten für Anwendungen in Architektur, Denkmalpflege und Archäologie durch open-source Software und Webservices

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Abstract:

Constant improvements in the performance of internet and computer technologies combined with rapid advancements in computer vision algorithms now make it possible to efficiently and flexibly reconstruct the 3D geometry of objects. Objects of different sizes can be modelled using image sequences from commercial digital cameras that are processed by web services and freely available software packages, forming low-cost systems for numerous applications (restoration, historical care of monuments, visualization, analysis of the state of construction and the damage, etc.). In this contribution various cultural objects (historical buildings, statues/figures, archaeological finds, etc.) have been reconstructed in order to investigate the potential of this technology which enables the automatic generation of 3D point clouds or surface models (as 3D polygons) with photo-realistic texture from image data. These so-called low-cost systems represent an efficient alternative to expensive terrestrial laser scanning systems for the as-built documentation of 3D objects in architecture, cultural heritage and archaeology. The accuracy of the automatically generated 3D models is assessed by comparison with results from terrestrial laser scanning.

German
Durch die stetig zunehmende Leistungsfähigkeit des Internets und der Computertechnologie sowie der raschen Weiterentwicklung von Computer Vision Algorithmen ist es heute möglich, die 3D-Geometrie von Objekten unterschiedlicher Größe mit handelsüblichen digitalen Kameras als Low-Cost-Systeme für zahlreiche Anwendungen (Restaurierung, historische Denkmalpflege, Visualisierung, Analyse des Bauzustandes und der Beschädigung, etc.) effizient und flexibel in Bildsequenzen zu erfassen. Anhand von diversen Kulturobjekten (historische Gebäude, Statuen/Figuren, archäologische Fundstücke, etc.) wird in diesem Beitrag das Potential von Webservices und frei verfügbaren Softwarepaketen aufgezeigt, mit denen 3D-Punktwolken oder Oberflächenmodelle (als 3D-Polygone) mit fotorealistischer Textur automatisch aus Bilddaten erzeugt werden. Diese so genannten Low-Cost-Systeme stellen heute für die As-Built-Dokumentation von 3D-Objekten in Architektur, Denkmalpflege und Archäologie eine effiziente Alternative zu teuren terrestrischen Laserscanningsystemen dar. Die Genauigkeit der automatisch erzeugten 3D-Modelle wird durch den Vergleich mit Ergebnissen des terrestrischen Laserscannings aufgezeigt.

Keywords: 3D; AUTOMATION; COMPARISON; IMAGE MATCHING; MODELLING; POINT CLOUD; RECONSTRUCTION

Document Type: Case Report

DOI: https://doi.org/10.1127/1432-8364/2012/0152

Publication date: 2012-12-01

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  • Photogrammetrie - Fernerkundung - Geoinformation (PFG) is an international scholarly journal covering the progress and application of photogrammetric methods, remote sensing technology and the intricately connected field of geoinformation processing.

    Papers published in PFG highlight new developments and applications of these technologies in practice. The journal hence addresses both researchers and student of these disciplines at academic institutions and universities and the downstream users in both the private sector and public administration.

    PFG places special editorial emphasis on the communication of new methodologies in data acquisition, new approaches to optimized processing and interpretation of all types of data which were acquired by photogrammetric methods, remote sensing, image processing and the computer-aided interpretation of such data in general.

    PFG is the official journal of the German Society of Photogrammetry and Remote Sensing.
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