Journal
2ND INTERNATIONAL CONFERENCE OF GEOMATICS AND RESTORATION (GEORES 2019)
Volume 42-2, Issue W11, Pages 1165-1172Publisher
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/isprs-archives-XLII-2-W11-1165-2019
Keywords
Archeology; Photogrammetry; Remote Areas; Structure-from-Motion; Training
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The impressive success of Structure-from-Motion Photogrammetry (SfM) has spread out the application of image-based 3D reconstruction to a larger community. In the field of Archeological Heritage documentation, this has opened the possibility of training local people to accomplish photogrammetric data acquisition in those remote regions where the organization of 3D surveying missions from outside may be difficult, costly or even impossible. On one side, SfM along with low-cost cameras makes this solution viable. On the other, the achievement of high-quality photogrammetric outputs requires a correct image acquisition stage, being this the only stage that necessarily has to be accomplished locally. This paper starts from the analysis of the well-know 3x3 Rules proposed in 1994 when photogrammetry with amateur camera was the state-of-the art approach and revises those guidelines to adapt to SfM. Three aspects of data acquisition are considered: geometry (control information, photogrammetric network), imaging (camera/lens selection and setup, illumination), and organization. These guidelines are compared to a real case study focused on Ziggurat Chogha Zanbil (Iran), where four blocks from ground stations and drone were collected with the purpose of 3D modelling.
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