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14
Achieving a good image
14.3 Adjusting the infrared image
14.3.1 General
An infrared image can be adjusted automatically or manually.
In automatic mode, the camera continuously adjusts the level and span for the best image
presentation. The colors are distributed based on the thermal content of the image (histo-
gram color distribution). The temperature scale to the right of the screen shows the upper
and lower temperatures of the current span.
In manual mode, you can adjust the temperature scale to values close to the temperature
of a specific object in the image. This will make it possible to detect anomalies and smaller
temperature differences in the part of the image of interest. In manual mode, the colors
are distributed evenly from the lowest to the highest temperature (linear color distribution).
When manual image adjustment mode is active, an adjustment wheel is displayed to the
right of the temperature scale.
Figure 14.1 Manual adjustment mode active
In manual mode, you can adjust the image by touching the screen or by using the naviga-
tion pad. For more information, see sections 14.3.2 Manual adjustment by touching the
screen, page 57 and 14.3.3 Manual adjustment by using the navigation pad, page 58.
• In live mode, touch the soft button
adjustment modes.
• In preview/edit mode, manual image adjustment mode is active.
Note You can also assign image adjustment functions to the programmable buttons. For
more information, see section 11.12 Assigning functions to the programmable buttons,
page 37.
• Switch between auto and manual: Allows you to switch between automatic and manual
image adjustment modes.
• Auto adjust the manual temperature scale: Allows you to perform an automatic adjust-
ment of the image while remaining in manual image adjustment mode.
14.3.1.1 Example 1
Here are two infrared images of a building. In the left image, which is auto-adjusted, the
large temperature span between the clear sky and the heated building makes a correct
#T810253; r. AA/42549/42549; en-US
to switch between automatic and manual image
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