There are several stereoscopic techniques that provide at least one of the physiological depth cues. These techniques are
- Holography
- Binocular Technologies
- Parallax Barrier
Each of them has it's own advantages and limitations and it's own field of application.
Holography is a technique that reproduces all four physiological cues. Unfortunately, it is very difficult to generate and produce a synthetic hologram because a very fine interference pattern needs to be computed and reproduced. This makes it difficult to implement an autostereoscopic display based on the holography principle. Another disadvantage of the holography approach is that it records and reproduces a monochromatic light, thus the reproduced image has one dominant color.
Advantages:
- Reproduces all four physiological depth cues
- Visible to multiple viewers
Limitations:
- Only monochromatic images (single color)
- Large size computer generated holograms are not possible
- Expensive to produce
- Difficult to shoot
Applications/Products
- Small static single color images
- Security feature against counterfeiting
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