Model of transformation of cadastral maps of former Austrian annexation with additional conditions on transformation parameters.

Abstract

Although cadastral maps, of former Austrian annexation comes from the second part of XIX century very often, yet they are still source of data in many cadastral units located in southern-eastern part of Poland. These maps are used very often as contemporary cadastral maps in unchanged scale 1:2880 or as rescaled maps to metric scale 1:2000. Possibility of application of former Austrian cadastral maps for various surveying-legal works has been presented, among others in [5] or in [4]. It is worth mentioning that even in case when there is modernized cadastre in speci c cadastral unit according to [6], yet such cadastral maps are still used as basic source for analysis during delimitations or other works dealing with determination of parcel boundaries. Unfortunately, there is very often a lack of control points, tying reference system of cadastral maps with current reference system. For transformation of such maps, using xed eld points like “three-balks”, corners of buildings [3] or cadastral control points [8]. According to mentioned authors’ opinion, a big problem each time was to capture points which could be regarded as control points during transformation of former Austrian cadastral maps. As control points, as it has already been mentioned, being drawn on former cadastral maps and possible to identify in the eld. However, because passage of years, to search out such points can be very di cult. Yet, in many cases it is possible to identify parcel boundary being on former cadastral map with those, existing in the eld, now. One should absolutely add, that ends of boundary lines, as a results of changes of eld development (broadening of road, changes of river bed, etc.), are di cult to identify, sometimes. Such example is shown on Figure 1, where contemporary cadastral situation is drawn by red colour, while former cadastral situation – cadastral map, is drawn by gray colour.