K. Jedlicka, O. Cerba, P. Hajek
Monday 5 August 2013 by Libadmin2013

References: 13th SGEM GeoConference on Informatics, Geoinformatics And Remote Sensing, www.sgem.org, SGEM2013 Conference Proceedings, ISBN 978-954-91818-9-0 / ISSN 1314-2704, June 16-22, 2013, Vol. 1, 685 - 692 pp


The third dimension represents one of the challenges of contemporary cartography. 3D cartographic visualization can be realized using non-photorealistic approach (applied mostly in smaller scales) or photorealistic approach (applied often in large scales).
The presented project is located in the area of a castle, deals with very detailed data and is realized using combination of photorealistic and non-photorealistic approach. The Castle Kozel (built in classicist style) was selected for a research of detailed spatial register of cultural heritage in 2006. The research is realized in cooperation of National Heritage Institute of the Czech Republic and University of West Bohemia.
There has been acquired a lot of both attribute and spatial data during the research. The data is stored in detailed geographic database (structured in accordance with national geographic database of cultural heritage). Alongside of classic maps used for two dimensional representation of the data, also three dimensional model was created. While maps are used for register and even research purposes, 3D models are best suited for presentation and promotional purposes - which is also an important aspect of a care of cultural heritage.
Currently, it becomes more and more common to have a 2D map created directly from a geographic database, with dynamic link between geodata and their cartographic representation. The situation is distinctly different in 3D. It is caused by the fact that geographic information systems were originally based on 2D and 2,5D representations of real features and have just recently started dealing with 3D. Thus, most of the current 3D photorealistic models are created just for visualization purposes (often by CAD) and without any connection to detailed descriptive information about the visualized area of interest.
On the other hand, the presented paper focuses on description of how to create a 3D model in a way that interconnects 3D geometry with an attribute database. Because GIS is not a suitable tool for 3D data creation, the data has to be firstly created in CAD, then restructured and converted to GIS format. Finally, the created geometry has to be connected to the attribute database about the castle, using unique identifiers. The whole process is presented as a Case Study at the Castle Kozel.

Keywords: 3D, GIS, CAD, database, cultural heritage

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