Figure 7: Faulty Fpn Calibration - Dalsa Calibir GXM640 User Manual

The information contained in this document is not subject to Export Control Regulation in Canada.
Note: When using an external shutter, if a scene of uniform temperature is not
used for FPN correction, resulting images will have artifacts.
The following images demonstrate the effect of a faulty FPN correction due to the use of
a non-uniform scene.
Non-uniform scene used for FPN calibration
2. Set the FPN Target Mode feature to External Shutter, available in the Image
Processing category:
Calibir GXM640 IR Camera User's Manual

Figure 7: Faulty FPN Calibration

Image with artifacts
Features and Configuration Options  37