2011

Table Of Contents
systems, the observer head orientation is important to avoid ghosting
artifacts.
Active Shutter Glasses
The viewer wears LCD glasses that open the left or the right eye in
synchronization with left and right images shown by the display device. The
synchronization signal is broadcast by an emitter to the LCD glasses. Devices
that use this technology include projectors and monitors. Examples of these
devices are:
DLP monitors DLP monitors that support active shutter glasses. The left
and right images are shown at double update rate (120 Hz), using a
checkerboard pattern. Their disadvantage is half horizontal resolution.
Passive Colored Glasses
Anaglyph Left and right images are tinted red and cyan, and viewed
using inexpensive tinted glasses. An important disadvantage is poor color
reproduction.
378 | Chapter 16 2D Compositing