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Gain is the leve
l of amplification of a signal. The Gain
affects image sharpness sensed by the naked eye.
When gain is increased in an image, one mus
take into consideration the addition of sign
"noise".
Pixel Size - Most CCD and CMOS imagers con
Each pixel is one sensor within the array and ha
definite size, which should be available by the
manufa
cturer. Sizes typically range from 8-20
micr
ons. The pixel size is a technical parameter
that
relates
to
resolution,
dimensions and pixel architecture. For a giv
size, a high resolution requires a small pixel
Progressive-Scan - A system of video
transmitted consecutively, such as in the
D
VD video encoding where the video is produced by scanning the film. It is also used in
enhanced
and
definition television systems
as it is supposed to produce
less visual artifacts than the
interlaced
mode
requires a higher refreshing
rate.
Sensor Size - The "Sen
d
imensions of CCD/CMOS sensor area, which is
responsible for transforming light into electrica
signals. Typically, the sensor size from 1/4" to 1
and measured by diagonal size.
process
f
eature
en die
scanning whereby lines of a picture are
computer world. This method is often used in
high
but
sor Size" is the
- 106 -
t also
ificant
sist of picture elements dubbed "pixels".
s a
l
"
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