Abstract
Abstract. The paper presents the results of 3D modelling in the Lusatian Borough, Biskupin, using archival data. Pre-war photographs acquired from different heights, e.g., from a captive balloon (maximum height up to 150 m), from a blimp (at a height of 50–110 m) and from an aeroplane (at a height of 200 m, 300 m and up to 3 km). In order to generate 3D models, AgiSoft tools were applied, as they allow for restoring shapes using triangular meshes. Individual photographs were processed using Google SketchUp software and the "shape from shadow" method. The usefulness of these particular models in archaeological research work was also analysed.
Highlights
Site 4 in the Lusatian culture fortified settlement in Biskupin is situated on a peninsula, with an approximate size of 2 ha, the banks of which are lapped by the waters of Lake Biskupin on the north, east and west sides (Fig. 1a)
The authors of this paper present the short characteristics of algorithms applied in the 3D modelling process in the discussed research works
Even if we assume the Lambertian reactance andknownlightsourcedirection,andifthebrightnesscanbedescribe dasa function of surface shape and light source direction, the problem is still not simple. This is because we have a linear equation with three unknowns if the surface shape is described in terms of the surface normal; if the surface shape is described in terms of the surface gradient, we have a nonlinear equation with two unknowns
Summary
Site 4 in the Lusatian culture fortified settlement in Biskupin (north-western part of Poland) is situated on a peninsula, with an approximate size of 2 ha, the banks of which are lapped by the waters of Lake Biskupin on the north, east and west sides (Fig. 1a). This lake is one of a series of postglacial lakes located in the northern part of the Gniezno Lake District (Fig. 1b-c). After World War II, work continued until the beginning of the 1970s (Fig. 2)
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