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Additionally, one or more graphics cards with OPENGL support 
is needed in order to render the stereo pairs and to output the 
images to the projectors. 
  
  
  
  
  
  
  
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B5. Istanbul 2004 
For this implementation and tests, two Compaq projectors having 
polarized glasses and two systems with different CPU, graphics 
cards and RAM (both with cost less than 1500 €) were used. 
  
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Figure 1: Openview in action 
3. EXPLORING OPENVIEW 
3.1 Importing models and scenes 
OpenView is not a graphics editor, nor a VR developing tool. 
This means that, even it is possible to use OpenView in order to 
create simple objects and worlds from scratch (using scripts), it is 
suggested to use external, specialized tools to do this task; then all 
it is needed is just importing them into OpenView. 
3.1.1 Supported formats 
Since OpenView uses the GLScene Library, it supports all the 
formats that GLScene does. Some of them are then 3D Studio 
(3ds), TIN, STL, MD2 (Quake2, animated). OBJ (WaveFront, 
and many others), SMD (Half-Life, skeletal animation, obtained 
from a decompiled MDL, f.i. with MilkShape). 
Additionally, an extra implementation has been done in order to 
import grid data from simple ASCII files or Surfer's DSAA 
format, both combined with orthoimages. 
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