User Guide

Table Of Contents

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Operation

427-0300-00-12 - Revision 110 - May 2021

Defining a custom AGC ROI

To change the size of the ROI:

Hover over the handle in the

bottom-right corner of the ROI,

and then click and drag it.

To move the entire ROI: Hover

over the ROI, and then click and

drag it.

As soon as you manually change the size of the ROI or move it, the AGC ROI setting automatically

changes to Custom.

AGC Image Settings

In some cases, changing the AGC image settings can provide a better image, depending on personal

preferences, display devices, and so on.

Brightness (Gamma)—Determines the allocation of the 256 “shades of gray” produced by the AGC.

Values above 50 allocate more shades of gray to hotter objects, while values below 50 allocate more

shades of gray to lower temperature objects. Range 0 to 100.

Contrast (Max Gain)—Increasing contrast can provide a better image, especially for scenes with little

temperature variation. (It might also increase noise due to the increased gain.) Range 0 to 100.

Tip

Changes to the default contrast setting affect scenes with little temperature variation more than they

affect scenes with greater temperature variation.

Sharpness (DDE Gain)—Enhances image details and/or suppresses fixed pattern noise. Range 0 to

100.

AGC Filter—Determines how quickly a scene adjusts when a hot object appears (or disappears) within

the AGC ROI. If set to a low value, when a hot object enters the ROI, the AGC will adjust more slowly

to the hot object, resulting in a more gradual transition. Range 0 to 100.

Colorization—Provides a selection of palettes for representing the detected levels of thermal energy

as colors or gray-scale values. WhiteHot and BlackHot are grayscale palettes; other palettes assign

different colors to different temperatures.

FFC (Flat-Field Correction)

At regular intervals or when the ambient temperature changes, the camera automatically performs FFC

(also known as Non-Uniformity Correction or NUC). However, you can also manually trigger FFC by

clicking Perform FFC. The shutter for the thermal sensor closes and provides a target of uniform

temperature, allowing the thermal sensor to correct for ambient temperature changes and provide the

best possible image. The thermal image momentarily freezes.