期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2006
卷号：XXXVI Part 5
出版社：Copernicus Publications
摘要：During the 19 th century, while Athens was rebuilding itself, trying to become a European Capital, a lot of prominent Architects offered their services towards this end. Theophilus Hansen from Denmark, among other wonderful buildings, designed and constructed the Athens Academy in 1859. It is one of the three most prominent buildings in the centre of Athens, the Athens University and the National Library. Hansen was inspired by the Greek classical architecture of the 5 th century BC. The Public Meeting Hall of this building is an oblong-shaped room, the length of which is lined on both sides amphitheatrically with three rows of marble seats. Its ceiling is decorated with panels of great beauty. All the Hall's sides are sheathed to a certain height with marble revetments, on which the names of the Academy's Donors and Benefactors are recorded. The Hall's painted decoration extends from the western side all the way to the southern side, a distance of more than 50 meters. The pictorial ensemble decorating the Academy's Public Meeting Hall was effected over the two-year period from 1878 to 1880; it is the result of Theophil Hansen's inspired design, realised by the Austrian artist Christian Griepenkerl (1839-1916). The latter was a student of the great artist Karl Rahl and a Professor at the Academy of Fine Arts of Vienna. Special photogrammetric and geodetic methodologies developed, implemented and tested in previous occasions during the long collaboration of the Laboratories of General Geodesy and of Photogrammetry, of National Technical University of Athens, were improved and applied for the detailed geometric documentation of the Main Hall. According to the technical specifications the compilation of a network of horizontal and vertical sections, in vector and raster (orthophotos) format, was required. Although there was no demand for 3D representation and nearly all important details, i.e. the paintings, were on flat surfaces, special tests for using laser scanning, either independently or in combination with the photogrammetric procedures, especially for the documentation of complicated objects and sculptures that exist in the internal area of the Main Hall. In this paper the various methodologies employed for the fieldwork and the data collection are briefly described, the difficulties encountered are reported and their solutions are also described, while details are given for the peculiarities of the data processing. The geodetic and photogrammetric outputs are assessed for their accuracy and completeness and their integration to the final products is described in detail. The final drawings are presented and evaluated
