Surface modelling of complex archaeological structures by digital close-range photogrammetry

The paper describes an experience carried out in the framework of an archaeological activity, where various geomatic techniques were applied and integrated, tying together disciplines like topographical surveying, geophysics, photogrammetry, remote sensing, etc. During the work carried out at the archaeological site of Tilmen Höyük, in Turkey, the approach was to firstly define and maintain a common shared reference system among the different surveying activities and in that realize the data acquisition phase. During the 2005 campaign some experiences were realized in close-range photogrammetry using non-metric cameras, with subsequent data modelling and representation. Aim of the paper is to show results and discuss problems resulting from the field campaign and data processing.