Tamarisk
®
Camera Control Software User Guide
Figure 32: Manual Gain and Level
5.5.4 Freeze AGC
As the name implies, Freeze AGC locks or freezes the current gain and level settings for a
particular scene preventing AGC from making adjustments; however, logarithmic equalization
continues to be applied to the scene information. This is useful when one wants to establish a
background scene, possibly discriminating certain objects in the scene and does not want the
displayed image characteristics of the object or background to change when there is a dramatic
change in the thermal signature of objects entering or exiting the scene. In such a case, if AGC
mode were enabled, the camera would automatically adjust the scene gain and level to
accommodate the new object and potentially affect the displayed image characteristics and /or
wash-out other objects of interest.
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