Nearly all calibrations are done on a per pixel basis. Here is a list
of the calibrations that are available on Tau and Quark cameras:
- Factory calibration. This is the main set of calibration
parameters for each camera. This cannot be changed in the field.
- Flat Field Correction (FFC). This is an offset calibration
usually performed at power up, when the camera changes temperature, and
periodically during operation. This calibration compensates for certain
errors that build up during camera operation. It requires a shutter or
similar uniform temperature device to cover the camera field of view.
This is documented by the FLIR Camera Controller User’s Guide, FLIR
document number 102-PS242-02.
- Non-Volatile Flat Field Correction (NVFFC). This is a
stored FFC that can be used to provide a good image when using a
shutter is not practical.
It can be used with advanced processing for completely shutterless
operation, or with a shutter for optimum operation. This calibration is
documented by the NVFFC Calibration and Operation Application Note,
FLIR document number 102-PS242-100-03.
- Supplemental FFC. This calibration can compensate for image
effects caused by the changing temperature of large lenses or other
optical components. It may also help with effects from heat sources in
camera housings. This calibration is documented by the Supplemental FFC
Application Note, FLIR document number 102-PS242-100-05.
- Supplemental Gain Cal. This calibration is needed if the
lens or optics of the camera is changed. This calibration is documented
by the Gain Calibration Procedure Application Note, FLIR document
- Radiometric Calibration. This calibration may be used to
optimize or refresh measurement performance on those cameras with
Spotmeter or Image Metric optional features. This calibration is
documented by the Advanced Radiometry Application Note, FLIR document
Most of the documents mentioned are available here: