Full text: Proceedings, XXth congress (Part 5)

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B5. Istanbul 2004 
  
Independent of the source of the horizontal parallaxes, an 
attempt for a systematic investigation of the complete list of 
virtually stereo aids according to the state of the art, has been 
carried out, see table 1. 
The principles of the 3dimensional viewing technology have 
been categorized according to 
* methods for the spatial presentation of stereo mates projected 
without contact, 
   
en eu 
Figure 7. 
3D Geo-Imagery is bridging the continents: 
- using polarized glasses in Malaysia (on top) 
- viewing stereoviews about North Korea in coin 
stereoscope machines with sound in South 
Korea (middle) 
- one of about 5 surviving photo plasticons in Germany 
(below), see sample figures 3, 4 and 5. 
* methods for the separation of spatial presented stereo mates 
with alternate projections or in contact and 
* methods using virtually 3 D models. 
Not part of this investigation is "materialized 3D appearance", 
namely the reality and real physical 3D models (-Technology), 
because this are no methods for virtually but for real 
3dimensional presentation. 
Sticking to appropriate virtually stereo data representation, also 
no part of this investigations are, e.g., methods using simple 
central perspective effects and/or shadow effects, as well as 
"continuous profiling"; latter are methods for 3D data 
determination by combining a successive queue of profiles, but 
not own methods for virtually 3D data presentation. Similar 
holds for the Moiré effect. "2.5 D effects" as verifled by 
permanent moving of a queue of central perspective images 
become part of the game only, if the scenery is viewed by using 
NUOPTX glasses, according to PULFRICH, 
4. CONCLUSION 
This paper stimulates the scientific as well as the public interest 
in 3D Geo- and in particular in 3D Heritage-Imagery by dealing 
with aspects of gaining, collecting and applying of conservation 
related stereoviews. 
Modern (digital) single lens cameras are highly recommended 
to obtain own stereoviews. In case of lacking aerial photography 
the propagated DIGI BEAM LITE camera allows to achieve 
extremely high resolution aerial photography of limited aeries 
of, e.g., Heritage concern. As a matter of fact about 20 research 
gaps have been identified with respect to Techniques and Arts. 
A systematic survey for Heritage related stereoviews on the 
web, as well as in a "conventional manner", concentrating on 
international Archives is one of the main activities of the 
RecorDIM Task Group on Collecting, Compiling and Sharing 
of stereoviews. Though it is believed, some "3D image 
treasures" still wait for "excavation" the most important Archive 
for stereoviews is the Keystone Mast collection of the 
University of California Riverside/Californaa Museum of 
Photography. 
A complete list of the stereoscopic methods and aids, covering 
the requirements for VIRTUAL ("real") Spatial Geo- and 
Heritage-Data Presentation has been established. Not part of 
this investigation is "materialized 3D appearance" like of the 
nature or of real models. Also neglected are methods for so 
called "quasi 3D" or/and methods limited to "2.5 D". From a 
systematic dealing with fundamentals of virtually spatial data 
presentation, the authors for the fist time proudly present stereo 
mates in the "DOWN UNDER" mode. International samples 
show, 3D Geo-Imagery is really bridging the continents. 
It is liked to emphasize, from a consequently dealing with the 
principals of spatial data visualization, even the future of the 
whole computer industry could improve. Here namely the 
"Felix Solid State" is a candidate for a new spatial PC 
generation, to replace or to complete the 2dimensional screen 
generation. 
5. LITERATURE 
GERNSHEIM, H. and A: The History of Photography, London 
and New York, 1969. 
SCHUHR,W. and KANNGIESER, E.: Basics on Spatial Data 
Visualization; Proceedings of the SDH 2000 Symposium, 
Beijing (China) (2000) 
SCHUHR,W. and KANNGIESER, E.: Back to the Roots in 
Photogrammetry, Remote Sensing and GIS; ISPRS-Archives 
Amsterdam (NL) (2000) 
SCHUHR, W. and KANNGIESER, E.: Survey of Available 3D 
Visualization Techniques; Proceedings of the CIPA Workshop 
on Scanning for Cultural Heritage Recording in Corfu (Greece) 
(2002) 
WALDHAEUSL, P. and OGLEBY, C: 3-by-3 Rules for Simple 
Photogrammetrie, ISPRS Comm.V Symposium, Melbourne 
(Australia) (1994) 
     
  
   
  
  
  
  
  
  
  
  
   
  
  
  
  
   
  
  
  
  
   
  
   
  
   
  
  
  
    
  
   
  
  
  
  
   
  
   
  
   
   
   
   
   
   
  
   
   
    
   
   
   
  
   
  
   
  
    
   
  
   
  
  
  
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