Recording Historic Masonry Buildings Using Photogrammetry - Two Case Studies

Abstract eng:
The use of conventional and photogrammetric surveys is presented for the recording of two historic masonry buildings in Greece. The first one is a four-storey traditional tobacco warehouse of the late 19th century in Alexandroupoli which has been partially collapsed in 2005 and constituted an extremely dangerous working environment. The second is an old customs house that is located in the old historic town of Nafplio and specifically in front of the central part of the port. It was built around the middle of the 19th century by the well-known Architect Stamatios Kleanthis. The architectural, structural and morphological characteristics along with the pathology of these buildings have been recorded through photogrammetric and conventional topographic surveys. This way, all the necessary information for the structures have been acquired with an appropriate accuracy in order to assist Engineers to choose the proper repairing and strengthening techniques for the renovation and the re-use of these historic buildings. The old tobacco warehouse in Alexandroupoli is planned to be the new Municipal Library, whereas the old customs house in Nafplio will be a museum for cultural exhibitions. The recording procedure used, combines the conventional topographic surveys and the photogrammetric image processing for the formation of all the façades’ orthoimages. The orthoimages were used as background information to digitize details of the buildings façades in a CAD environment. The Photomodeler software and the freeware application Hugin has been used to create respectively a detailed 3D model and an interactive panorama file of the buildings.

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