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DOCUMENTATION OF THE BAROQUE THEATRE AT THE CESKY KRUMLOV CASTLE 
Jindrich Hodac 
Czech Technical University in Prague, Faculty of Civil Engineering 
Dept, of Mapping and Cartography, Laboratory of Photogrammetry 
Thakurova 7, 166 29 Praha 6, Czech Republic 
phone: +420 2 24 35 46 50; e-mail: hodac@fsv.cvut.cz 
KEY WORDS: Documentation, Theatre, 3D Model, Visualization, Animation 
ABSTRACT 
The baroque theatre of the Cesky Krumlov castle represents a baroque stage in its mature form. The original theatre fund is preserved 
in both existing buildings such as auditorium, machinery, decorations, lighting technology, other technical facilities and information 
on the theatre life from 17th to 19th centuries. Only one royal theatre in the world is comparable to the Krumlov baroque theatre, that 
is Swedish Drottningholm near Stockholm built in 1766. The ancient town Cesky Krumlov is located in the south part of Bohemia 
and it is one of UNESCO's World Monuments. 
Laboratory of photogrammetry as a part of the dept, of mapping and cartography in co-operation with the Foundation of the Baroque 
Theatre and the administration of the Cesky Krumlov Castle have already taken interest in the documentation of this unique building. 
The main purpose of the documentation activities is to create 3D model of the theatre, which will give an opportunity to scientists, 
architects, conservationists as well as potential visitors for looking at and studying this building and its details in virtual form. 
The documentation of the baroque theatre of the Cesky Krumlov castle is a project in which various methods of data acquisition 
(analogical/digital photogrammetry, surveying) were used and various methods of a presentation of 3D data were tested. The baroque 
theatre is a very complicated space and the combination of different methods seems to be the best way. Each part of the theatre needs 
its own level of data generalisation (stage, auditorium, machinery) and has specific demands. The comparison of various methods, 
their applicability and precision leads to creating technology and it is another aim of this project. 
3D photo-realistic model of the theatre exists now. This project will continue and the next step is presentation of this set of the spatial 
data on the Internet and finding of the ways leading to creation of the Cultural Heritage Information System. 
1. PURPOSE OF THE PROJECT 
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The focus of this project is to verify the applicability of new technologies in the acquisition, processing and visualization of three- 
dimensional data. The main purpose is to search and check the appropriate technologies and workflows of processing and visualiza 
tion of the data. Retrieving optimal usability of digital non-metric cameras would be the next aim of this project since this is modern 
facility in the whole scale of methods for an effective acquisition of the planar and three-dimensional data. 
2. INTRODUCTION 
Laboratory of photogrammetry as a part of the dept, of mapping and cartography in co-operation with the Foundation of the Baroque 
Theatre and the administration of the Cesky Krumlov Castle have already taken interest in the documentation of this unique building. 
The baroque theatre of the Cesky Krumlov castle represents a baroque stage in its mature form. Only one royal theatre in the world is 
comparable to the Krumlov baroque theatre. That is Swedish Drottningholm near Stockholm, which was built in 1766. The interior of 
the theatre is very complicated (e.g. wooden machinery etc.), it has big influence on an appropriate selection of method of data col 
lection, software for processing of data and on the end on operators. 
There have been several stages of documentation of this building done primarily by students of Geodesy and Cartography specialisa 
tion working on their diploma projects. The differing technologies used in the acquisition of spatial data were dependent upon the 
part of the theatre being documented. Classical methods of analogue photogrammetry were chosen in some cases (mainly during the 
first few years of project) - analogue form of results has been converted into digital form. The different methods of digital photo 
grammetry were used - stereophotogrammetry for the documentation of the auditorium of the theatre, resection photogrammetry for 
the documentation of the lower part of the machinery (under the stage) in combination with surveying method. These later data are 
fully in digital form, due to probable student inexperience, have only a few usable data sets. 
In the beginning of the last year there were only few usable sets of data - lower machinery and two scenes. The form of these data 
sets is very close to expected form which are photo-realistic models consisting of wire models (vector) with surfaces. The surfaces of 
these models are filled with colours and in some cases with textures and photographic images in raster form. Simple methods of visu 
alization - rendering, animation (e.g. flights) could be accomplished with this form of the data. 
3. SOLUTION 
New data sets were obtained during the past year by surveying other parts of the theatre. The data covers these areas - auditorium, 
stage, upper machinery (above stage). Due to nature of these areas methods of documentation were chosen - photogrammetric 
Proceedings 18 th International Symposium CIPA 2001 
Potsdam (Germany), September 18 - 21, 2001