Working with images14
14.6 Performing a non-uniformity correction (NUC)
14.6.1 What is a non-uniformity correction?
A non-uniformity correction is an image correction carried out by the camera software to
compensate for different sensitivities of detector elements and other optical and geometri-
cal disturbances
1
.
14.6.2 When to perform a non-uniformity correction?
The non-uniformity correction process should be carried out whenever the output image
becomes spatially noisy. The output can become spatially noisy when the ambient temper-
ature changes (such as from day to night operation, and vice versa).
14.6.3 Procedure
To perform a non-uniformity correction, push and hold the Image archive button
for
more than 2 seconds.
14.7 Changing the temperature range
14.7.1 General
You must change the temperature range according to the expected temperature of the ob-
ject you are inspecting.
14.7.2 Procedure
Follow this procedure:
1. Push the joystick to display the menu system.
2. Use the joystick to go to
(Settings).
3. Push the joystick to display the Settings menu.
4. Select Device settings and push the joystick.
5. Select Set up camera and push the joystick.
6. Select Camera temperature range and push the joystick.
7. Select the appropriate temperature range and push the joystick.
Note You can also assign the function Switch temperature range to the programmable
button. Select
(Settings) > Programmable button > Switch temperature range.
14.8 Hiding overlay graphics (programmable button)
14.8.1 General
Overlay graphics provide information about an image, e.g., measurement functions and
parameters. You can choose to hide all overlay graphics.
14.8.2 Procedure
Follow this procedure:
1. Push the joystick to display the menu system.
2. Use the joystick to go to
(Settings).
#T559879; r. AO/35410/35410; en-US
38
1. Definition from the impending international adoption of DIN 54190-3 (Non-destructive testing – Thermographic
testing – Part 3: Terms and definitions).
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