Autostereoscopic monitors
Technical principles of autostereoscopic monitors
 A lot of people do not like the idea to wear glasses during stereoscopic visualization. Just for this people are targeted autostereoscopic monitors. The monitors create 2 or multiple viewing zones in witch the seen image differ. User must have each eye in different viewing zone to see the stereo effect. In principle there exist 2 vies zones monitor (user must be in a special position) or multiple view zones monitors (user can be in any position). The 2 view system could be eventually extended by user head tracking system based on image analysis and dynamic viewing zone modification. The most important element of the monitor is an optical mask creating the viewing zones.
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The monitor emits different picture in different directions. The direction of the image emitting is optionally modified based on user head tracking.
Advantages:
Image in full colors. No need for any glasses. Small and robust device.
Disadvantages:
Expensive device. Reduced resolution in comparison to 2D monitors. Limited number of users. |
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Comparison of different 3D stereoscopic visualization techniques
Technology |
Color information |
Resolution |
Suitable for projection |
Monitor based visualization |
Number of observers |
Cost |
Anaglyph |
complete lose |
middle |
yes |
yes |
high |
very low |
Active stereoscopy |
full |
high |
yes |
yes (no LCD) |
restricted |
high |
Passive stereoscopy |
full |
high |
yes |
no |
high |
middle |
Autostereoscopic monitor |
full |
middle |
no |
yes |
very restricted |
high |
The table table demonstrates suitability of different stereo visualization methods. |
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