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 number 102-PS242-100-07.
• 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 number 102-PS242-100-14.

Most of the documents mentioned are available here: http://www.flir.com/cvs/cores/view/?id=54717&collectionid=612&col=54721
or here:
http://www.flir.com/cvs/cores/view/?id=51878