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2. 5(a). 
special 
Knyaz, Vladimir 
  
camera orientation procedure based on testfield image acquisition. Testfield has 24 reference points. The standard 
deviation for reference points was 0.12 mm. 
The image shows good accuracy in uniform texture generation: the maximum error in contour links consist 0.43 pixel. 
It is provided by using uniform 3D model which has no DTM errors caused by integration of fragments obtained in 
different coordinate systems. 
  
Figure 5: Texture generation and model applying 
The results of using obtained model in virtual environment are demonstrated in Fig.5 (b). 
5 CONCLUSION 
The approach for photorealistic 3D models creation for VR is proposed. It includes the stage of uniform surface 
generation for closed 3D object and the stage of accurate texture production. 
The uniform surface is generated from 3D-point cloud using special points’ projection for the following Delaunay 
triangulation procedure. Then the list of triangles is used to present surface in Cartesian coordinates in triangulation 
form or to transform to regular mesh form. The accurate texture is generated using a set of object images for best object 
texture presentation. The uniform texture is produced as an union of particular orthophotos for object segments. 
The results of method applying demonstrate good precision in object reconstruction and texture generation. Closed 
model has no DTM errors caused by fragments assembling. It results in accurate texture generation having no contour 
errors on the fragments’ borders. 
ACKNOWLEDGEMENTS 
Author would like to express appreciation to Prof. Yu. Tjuflin and Dr. V. Glazov for valuable remarks on this works. 
REFERENCES 
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Optical 3D Measurement Techniques IV, Edited by A.Gruen, O.Kuhbler, Zurich, 29 September- 2 October, 1997, pp. 
19-26 
Knyaz V., Glasov V., Stepanyants D., Zheltov S., 1998. Photorealistic presentation of 3D laser radar image, 
Proceedings of International Workshop on Urban Multi-Media/3D Mapping, Tokyo, June 8-9, 1998, pp. 189-193. 
Wehr A., Ioannides M., 1997. Volume reconstruction by using 4-D object surface data Optical 3D Measurement 
Techniques IV, Edited by A.Gruen, O.Kuhbler, Zurich, 29 September- 2 October, 1997, pp. 33-39 
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000. 433