427-1065-00-12 Revision 130
November 2019
35
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Advanced Configuration
3.1.3
Thermal Image Setup - IR Page
In most installations it is not necessary to change the default settings of the thermal camera.
However in some situations, depending on weather, time of day, or scene, it may be useful to make
changes to the video image to enhance the image by modifying one or more parameters. Be aware
that when the conditions change the camera may need to be adjusted again; it is also a good idea to
know how to restore the factory default settings.
AGC ROI
In the
IR
page, a single JPEG image (a snapshot) is displayed in the upper right-hand corner. To
update this image at any time, select the
Refresh
button in the upper right. This will cause the entire
page to refresh, including the image and all the parameter values (be patient, it may take some
time).
The IR camera adjustments to the region of interest (ROI) determine what portion of the image is
used by the Automatic Gain Control (AGC) algorithm. By default all of the pixels in the image are
considered; in some cases it may provide an improved image if a portion of the image is excluded.
For example, the sky is generally very cold, so if the ROI excludes the sky it may add more contrast
to the rest of the image. A pull-down list offers some convenient options.
When Custom is selected, a handle is
shown in the center of the screen.
Drag the handle to set
the size of the ROI box.
Drag the ROI box over
the portion of the scene
that will control the AGC.
