
298 Virtual Reality: Concepts and Technologies
3D virtual
world
Right image plane
Left image plane
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Figure 13.8 Positioning of two fictitious or real cameras with converging optical axes
Figure 13.9 The vertical parallaxes are exaggerated in the figure
some installations where two observers have their head tracked, the display is theoreti-
cally planned for a single observer at a defined position. In practice, these pseudoscopic
movements are troublesome in special cases. For example, in teleoperation, the oper-
ator may need to move by controlling his manipulator and risks getting disturbed
visually by these false movements.
What should ...