436-0100-01-10, Rev. 200 Duo User Guide
Information on this page is subject to change without notice
5.1.2 IR Color Palette
The Duo detects and images long wave infrared radiation. Within the camera, this radiation is
mapped to a range of 255 colors. Using black and white palette, such as White Hot, this range is
converted to shades of gray with 0 being totally black and 255 being totally white. Different palettes
are available to change the appearance of the image. The most common selection is typically White
Hot (hotter objects appear lighter in color than cooler objects) or HotMetal (hotter objects appear
reddish white as oppose to cooler objects in the scene).
Figure 8. Thermal IR Color Palettes
There are two types of palettes offered in the Duo camera.
1. Linear: Scene radiation is mapped to pixel values where color is uniformly distributed from
one shade to another as pixel intensity increases. These palettes are the most common
palettes for general use. (WhiteHot & HotMetal palettes)
2. Contrast: Enhanced observed contrast by mapping pixel values to divergent color schemes.
Subtle differences between object temperatures become more apparent. (Rainbow palette)
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