FLIR TAU User Manual page 29

Tau User's Manual 3—Basic Operation of the Tau and GUI
Flat-Field Correction (FFC):
The Tau
automatically performs flat-field corrections (see
paragraph "Flat-Field-Correction Mode:" on page 3-
11). A green square is displayed on your video monitor
as a warning that the FFC is going to take place. Use
this function to set the number of analog video frames
(33ms NTSC, 40ms PAL) during which the warning will
be displayed. The time period, specified in frames, can
range from 0 to 30,000 frames. The factory setting of
60 frames equates to a two second warning. Setting
the Warn Time to zero turns off the warning.
Dynamic Digital Detail Enhancement (DDE) filter:
The DDE algorithm sets edge enhancement dynamically
proportional to the number of bins occupied in the
image histogram.
In a high dynamic range scene the gain will be higher
than in a low dynamic range scene. This allows faint
details to be visible in high dynamic range scenes
without increasing temporal and fixed pattern noise in
low dynamic range scenes.
The DDE filter operates independently from the AGC and will enhance edges without effecting
brightness or contrast. The valid range of Dynamic DDE setting is from 1 to 63 with 17 being
the neutral setting where the filter has no effect. Settings below 17 will smooth the image
reducing the appearance of sharp edges. Higher DDE settings will enhance all image non-
uniformities resulting in a very detailed but grainy picture especially in high dynamic range
scenes. Typical factory settings are between 25 and 30. Settings from 18 to 39 are normal
imaging modes where the edge enhancement can be tuned for the scene. Use the slider to
adjust the setting, or select the text field and type in the desired setting.
Note
In 14-bit Raw mode, selecting the DDE mode will not affect the digital data output.
Video Color:
Select color or monochrome for the
analog video output. If monochrome is selected then
the analog bandwidth is increased to provide better
spacial resolution in the horizontal direction.
Video On/Off:
This feature allows you to turn off
the analog video output which will result in some power
savings (approximately 55mW).
TAU-0035-00-10, version 100 April 2009 3-17