Banner PresencePLUS BCR 1.3 Series - Manual (Page 302)

high pass filter
A processing operation that enhances high frequencies (and
attenuates low frequencies).
histogram
Frequency counts of the population of pixels of each intensity
(gray level) or other characteristic populations in an image.
I
incandescent
Thermal generation of light, usually through radiant filaments
in a bulb.
incident light
The light falling directly on an object.
inverse square law
The exponential relationship between increased distance and
decreased light intensity.
iris
An adjustable aperture built into a Sensor lens to permit
control of the amount of light passing through the lens.
L
LED
Acronym for Light-Emitting Diode.
M
mask
A pattern used to eliminate portions of another pattern.
Regions of an image at a constant value, usually white or
black, form the mask.
N
noise
Irrelevant or meaningless data resulting from various causes
unrelated to the source of data being measured or inspected;
random undesirable video signals.
O
ocr
Acronym for Optical Character Recognition. Recognition of
each character in a string by a vision system.
ocv
Acronym for Optical Character Verification. Verify a string by
a vision system.
P
parallax
The difference in appearance or position of an object when
viewed from two different locations.
photon
A particle of light. A quantum of electromagnetic energy
moving at the speed of light.
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