IR-PAD SERIES USER MANUAL
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9-4 Ambient Temperature
The Ambient Temperature, which is often referred to as the background, is the
temperature of the air surrounding the target object. This number can affect
surfaces whose energy will hit the face of the target object and reflect from it
into the camera’s field of view.
The imager has temperature compensation to correct environmental sources
of energy as this can affect the measurement results. Temperature readings
are especially altered when the emissivity of the object is low or the difference
between the object temperature and the ambient temperature is large. It
is necessary to compensate the results to eliminate the influence of the
environmental temperatures.
Entering a numerical value in the appropriate input box will adjust the
temperatures of an image accordingly.
9-5 Distance and Angle of Capture
Although distance usually will not affect the temperatures measured by the
software it can be helpful to know the distance to the target location. Generally,
the further away the IR sensor is from the target/background area, the less
thermal contrast seen in the image.
Angles of reflection can also affect the contrast. This is significant because when
the IR sensor is operated at low angles over water there may be no perceived
thermal difference between the horizon and the water, i.e. the horizon can seem
to disappear. Users can change their angle by changing where they stand or by
attaching a camera to an unmanned aerial system.
While there is an input box for Distance there is not an input for Angle. Use the
Comments section to create notes.
Use the input fields
to enter information
and numerical data.
Users can include data
in reports. To toggle
data on/off click the
squares. Boxes are
green when selected.
IMAGE DATA, I.E. INFORMATION FOR THE ENTIRE IMAGE, IS SEPARATE FROM
REGION OF INTEREST DATA, INFORMATION STORED IN THE ROI CREATED
BY THE USER. VISIT THE APPROPRIATE DROP-DOWN TAB TO INCLUDE
PREFERRED INFORMATION IN THE REPORT.
