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Calibir GXM640 IR Camera User's Manual
Features and Configuration Options
37
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
Image with artifacts
Figure 7: Faulty FPN Calibration
2.
Set the FPN Target Mode feature to External Shutter, available in the Image
Processing category: