Honeywell HH1800 User Manual page 167

Example:
Histogram Stretch at 0H:
I - Invert Image
Invert image is used to rotate the image around the X or Y axis.
Example:
Image not inverted:
IF- Noise Reduction
Used to reduce the salt and pepper noise in an image.
Example:
Noise Reduction Off (0if):
HH1800 User Guide
1ix Invert around the X axis (flips picture upside down)
1iy Invert around the Y axis (flips picture left to right)
0if No salt and pepper noise reduction (default)
1if Salt and pepper noise reduction
Histogram Stretch at 1H:
Image with Invert
Image set to 1ix:
Noise Reduction On (1if):
Image with Invert
Image set to 1iy:
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