Abstract
Photogrammetric documentation can provide a sound database for the needs of architectural heritage preservation. However, the major part of photogrammetric documentation production is not used for subsequent architectural heritage projects, due to lack of knowledge of photogrammetric documentation accuracy. In addition, there are only a few studies with rigorous analysis of the requirements for photogrammetric documentation of architectural heritage. In particular, requirements focusing on the geometry of the models generated by fully digital photogrammetric processes are missing. Considering these needs, this paper presents a procedure for architectural heritage documentation with photogrammetric techniques based on a previous review of existing standards of architectural heritage documentation. The data product specification proposed was elaborated conforming to ISO 19131 recommendations. We present the procedure with two case studies in the context of Brazilian architectural heritage documentation. Quality analysis of the produced models were performed considering ISO 19157 elements, such as positional accuracy, logical consistency and completeness, meeting the requirements. Our results confirm that the proposed requirements for photogrammetric documentation are viable.
Highlights
Photogrammetric documentation of architectural heritage can be understood as a non-subjective data record of the historical, physical and temporal features of cultural monuments and buildings
Motivated by the need for technical specification in photogrammetric documentation of architectural heritage, and the importance of communication between geomatics and heritage experts, in this paper we propose a procedure for architectural heritage documentation with photogrammetric techniques based on a review of existing architectural heritage documentation standards
Photogrammetric documentation is a feasible technique for architectural heritage documentation and preservation
Summary
Photogrammetric documentation of architectural heritage can be understood as a non-subjective data record of the historical, physical and temporal features of cultural monuments and buildings. Selecting appropriate photogrammetric documentation to support architectural heritage preservation projects is not done, in particular by non-specialists, due to lack of understanding of standard terminologies and specifications in this domain. Photogrammetric techniques provide other products, such as orthoimages and digital terrain model, which require different procedures. These products will be not discussed in this paper. Some DPS for photogrammetric documentation are recognized by the heritage preservation community, including recommendations from the International Committee for Documentation of Cultural Heritage (CIPA) [8] These specifications were elaborated before recent digital.
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