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Term or expression
level
manual adjust
NETD
noise
object parameters
object signal
palette
pixel
radiance
radiant power
radiation
radiator
range
reference temperature
reflection
relative humidity
Publ. No. 1558146 Rev. a156 – ENGLISH (EN) – February 28, 2006
Explanation
The center value of the temperature scale, usually
expressed as a signal value.
A way to adjust the image by manually changing
certain parameters.
Noise equivalent temperature difference. A mea-
sure of the image noise level of an IR camera.
Undesired small disturbance in the infrared image
A set of values describing the circumstances under
which the measurement of an object was made,
and the object itself. (such as emissivity, ambient
temperature, distance etc.)
A non-calibrated value related to the amount of
radiation received by the camera from the object.
The set of colors used to display an IR image.
Stands for picture element. One single spot in an
image.
Amount of energy emitted from an object per unit
of time, area and angle (W/m
Amount of energy emitted from an object per unit
of time (W)
The process by which electromagnetic energy is
emitted by an object or a gas.
A piece of IR radiating equipment.
The current overall temperature measurement
limitation of an IR camera. Cameras can have
several ranges. Expressed as two blackbody tem-
peratures that limit the current calibration.
A temperature which the ordinary measured values
can be compared with.
The amount of radiation reflected by an object
relative to the received radiation. A number be-
tween 0 and 1.
Percentage of water in the air, relative to what is
physically possible. Air temperature dependent.
15 – Glossary
2
/sr)
107
15
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