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88
Operational Reference
Calibir GXM640 IR Camera User's Manual
FPN Correction Feature Descriptions
The following table describes these features along with their view attribute.
Table 20: Image Processing Feature Descriptions
Display Name
Feature & Values
Description
View
FPN Compensation
Mode
flatfieldCorrectionMode
Sets the enable state of the fixed
pattern noise (FPN)
compensation.
Guru
DFNC
Off
Off Disables FPN compensation.
Active
Active Applies the FPN compensation to
the image.
Calibrate FPN
Compensation
flatfieldCalibrationFPN
Calibrates the FPN compensation
coefficients. Ideally the camera
should be at normal operating
temperature. If shutterTarget is
set to External, a scene with
uniform temperature and
reflectivity should be presented
to the camera to properly
calibrate the FPN compensation.
Click “Press” to calibrate.
Beginner
DFNC
FPN Calibration Status
flatfieldCalibrationStatus
Reports the status of the last
FPN calibration.
Expert
DFNC
Not Calibrated
NotCalibrated FPN calibration has not been
calibrated yet.
Loaded From Flash
LoadedFromFlash FPN calibration has been loaded
from flash memory at boot.
In Progress
InProgress FPN calibration is in progress.
Error
Error FPN calibration has failed (cause
unknown)
Timeout
Timeout FPN calibration has failed
because not enough frames were
acquired within a 5 second
window. When acquiring in
external triggered mode, trigger
pulses should be provided to the
camera during FPN calibration.
Success
Success FPN calibration has completed
successfully.
Calibration Pending
CalibrationPending FPN calibration was triggered
(either directly through
flatfieldCalibrationFPN or by the
camera itself through
autoShutterMode). It will be run
the next time the acquisition is
started or armed.
Save FPN Calibration
flatfieldCalibrationSave
Saves the FPN calibration
coefficients to non-volatile
camera memory. Click “Press” to
save.
Beginner
DFNC
Auto Shutter Mode
autoShutterMode
Selects the criteria used to
automatically trigger FPN
recalibration. When this feature
is activated it is preferable to
configure shutterTarget to use
the camera's internal shutter.
Beginner
DFNC
Off
Disabled Disables auto shutter: The
camera will never trigger an FPN
calibration on its own.