Documentation of a historical house with close range digital photogrammetry

Abstract

This study aims to document the original architectural characteristics, alterations and damages of a historical house by combining the digital photogrammetric techniques with the mapping concepts of architectural conservation so that an architectural conservation project can be guided. The proposed documentation is carried on the entrance façade of a 19th century house located in the urban conservation site of Alaçatı, ..zmir, Turkey. The Demiral House has conservation priority among the other listed houses because of its vacant state and damages.Analytic recording of the façades of the historical houses in Alaçatı can be made fast with the rectification option of close range monoscopic softwares. A calibrated digital camera and a total station are the other tools used in this process. The colored thematic maps prepared are accurate enough for 1/50 scale analysis and they possess the qualitative information on the photographs. After it is checked that the threedimensional measurements defining the general geometry overlap with the 1/50 scaled rectified image mosaic, the details concerning the deteriorations are decided to be drawn to the scaled elevation drawing from this mosaic.This study has proposed a contemporary documentation technique so that architect-conservators can easily adapt in their conservation projects. When compared to the frequently applied documentation techniques like hatching on scaled twodimensional elevation drawings, it takes shorter time to prepare the proposed mapping method on rectified image mosaic. The architect-restorer has also the chance to examine many constructional details on the scaled rectified image mosaic. The end results are more realistic. Keywords: Architectural conservation, Close range, Rectification, Mapping, Alaçatı.