Page 163 - Concise Encyclopedia of Robotics

Photoreceptor
Lens
Reflected beam
Incoming
Incident beam Immortal Knowledge
Electron gun
light
Photomultiplier
Photocathode Target electrode
Output
Image orthicon

needed (for example, when there is a lot of action in a scene) and the
illumination intensity varies over a wide range, the image orthicon is use-
ful. It can be employed in robot vision systems that process images rapidly,
and/or that operate in work environments where the ambient light intensity
can change dramatically. Compare CHARGE-COUPLED DEVICE and VIDICON.
See also VISION SYSTEM.
IMAGE RECOGNITION
See OBJECT RECOGNITION.
IMAGE RESOLUTION
See RESOLUTION.
IMMORTAL KNOWLEDGE
In advanced and developing nations, computers have brought about a
transformation in human culture. The only role humans need to play, in
the accumulation of knowledge in the general electronic database, is to
input data into the systems.
Before computers existed (that is, before about 1950), history was
passed from generation to generation in the form of books and verbal
stories. If you read a book written 200 years ago, you interpret events
somewhat differently than the original author thought of them. This is

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