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method (the first part), surveying method (the rest). All of this data was originally received in fully digital form. Processing of the 
three-dimensional data was done by MicroStation software package, which was the only software package available in that time. The 
primary purpose of these data sets was the creation of photo-realistic models of all of the related areas and testing the possibilities of 
visualisation and animation. The requirements of good data relationship and data homogeneity were very closely monitored because 
these data sets will be required during the next phase of the project which will be creation of complete three-dimensional model of 
the entire theatre. 
The precision of the data sets obtained during this phase was one of the primary parameters observed. Various control measurements 
were put in place. The level of data precision is connected to the method of data collection and also to the level of experience of the 
operator. In addition, it is very dependent on the degree of a generalisation necessary in so complicated area and problems with an 
identification of documented entities and individual points as well. The degree of generalisation is related to the requirements of the 
end customers, strictly speaking a solution could be obtained during discussions with them - the typical question is what is techni 
cally possible. The timbers and wooden components of the theatre, which make up the technical equipment, are good examples of it. 
Fig. 1: Visualization of the upper part of machinery 
The digital non-metric camera was mainly used for a simple photo-documentation of the areas and for acquisition of textures of ma 
terials. In some cases the images for the single image photogrammetric restitution were taken too. These images were processed with 
specialised software (TopoL - Czech product) - the rectification of images and vectorization were done with the data. The results of 
these steps were planar and they were moved into the space via identical points. Testing evaluation was performed in one of stereo 
pairs (digital workstation - VSD). 
4. RESULTS 
The purpose of the project is searching and checking of an appropriate technologies and workflows in the acquisition, processing and 
visualization of three-dimensional data. 
Fig. 2: Visualization of the stage