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DDE (Digital Detail Enhancement) enhances image details and/or suppresses fixed pattern noise.

ACE (Active Contrast Enhancement) provides a contrast adjustment dependent on the relative

scene temperature. ACE thresholds greater than 0 impart more contrast to hotter scene content

and decrease contrast for colder scene content (e.g. sky or ocean). ACE thresholds less than 0 do

the opposite by decreasing contrast for hotter scene content and leaving more of the gray-scale

shades to represent the colder scene content.

SSO (Smart Scene Optimization) defines the percentage of the histogram that will be allotted

a linear mapping. SSO features facilitate the avoidance of irradiance level compression, which

is specifically important for bi-modal scenes, and better preserves the radiometric aspects of

an image (i.e. the difference in gray shades between two objects is more representative of the

difference in temperature). While radiometry is better preserved with this feature, the compromise

is the optimization of local contrast.

Contrast: the ratio of the black and white of the image. The colors will be richer and have more

contrast when the value is large.

Brightness: The brightness of the image.

Isotherm

Enabling Isotherm allows designated temperature ranges to be represented with different color

schemes, so that objects measured in a single color scheme impart higher contrast and better

visibility.

Individual isotherms (or color schemes) are separated by upper, middle and lower thresholds, which

have a value in percentage or temperature.

Take the White Hot Isotherm as an example. Below the lower threshold, 128-Grayscale is used to

represent temperature differences.

Between the lower and middle thresholds, Color Scheme 1 (48-Isotherm) is used.

Between the middle and upper thresholds, Color Scheme 2 (48-Isotherm) is used.

Above the upper threshold, Color Scheme 3 (32-Isotherm) is used.

Color Scheme 1 (48-Isotherm)

Color Scheme 2 (48-Isotherm)

Color Scheme 3 (32-Isotherm)

128-Grayscale

WhiteHotIso

ZENMUSE XT User Manual