ICP DAS USA IM-100 Manuel D’Utilisation

Page de 109
 
l of amplification of a signal. The Gain 
affects image sharpness sensed by the naked eye. 
ificant 
sist of picture elements dubbed "pixels". 
 
ons. The pixel size is a technical parameter 
en die 
 
scanning whereby lines of a picture are 
 computer world. This method is often used in 
VD video encoding where the video is produced by scanning the film. It is also used in 
sor Size” is the 
imensions of CCD/CMOS sensor area, which is 
” 
Gain is the leve
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 
cturer. Sizes typically range from 8-20
t also 
s a 
manufa
micr
that relates to resolution, process f
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
eature 
D
enhanced and high 
definition television systems 
as it is supposed to produce 
less visual artifacts than the 
interlaced mode but 
requires a higher refreshing 
rate. 
 
Sensor Size - The “Sen
d
responsible for transforming light into electrica
signals. Typically, the sensor size from 1/4” to 1
and measured by diagonal size. 
 
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