427-0073-12-12 Version 120 May 2015 3-2
3
Advanced Configuration
3.1.1 Thermal Image Setup
In most installations it will not be necessary to change the thermal camera from the default settings.
However in some situations, depending on weather, time of day and so on, it may be useful to make
changes to the video image to enhance the image by modifying one or more of the parameters. In
most situations, it will be adequate to select a different AGC Scene Preset (described below).
However, be aware that when the conditions change the camera may need to be adjusted again; for
that reason it is a good idea to know how to restore the factory default settings as well.
IR page
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, this may take some
time).
To make adjustments to the thermal image, it is possible to modify the Automatic Gain Control (AGC)
settings, which are grouped under the AGC ROI, AGC, and Scene Presets headings. In addition, the
detail in the image can be emphasized with the Digital Detail Enhancement (DDE) settings.The
overall image display (also known as Polarity or Color Palette) is determined by the Look Up Table
(LUT) selected in the Misc. (Lookup Table) section.
AGC ROI: The AGC Region Of Interest
(ROI) determines what portions of the image
are used in the calculation of the AGC. By
default all of the pixels in the image are
considered (Full Screen); in some cases it
may be possible to improve the contrast if a
portion of the image is excluded.
AGC: The AGC parameters control the
overall brightness and contrast and determine how the overall video image appears. The default
Plateau algorithm is suitable for most installations, but in some cases one of the other selections may
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