Honeywell Vuquest 3330 User Manual page 171

Gamma measures the brightness of midtone values produced by the image. You
can brighten or darken an image using gamma correction. A higher gamma cor-
rection yields an overall brighter image. The lower the setting, the darker the
image. The optimal setting for text images is 50K.
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L, R, T, B, M - Image Cropping
Note: Image Cropping should not be used with
Ships a window of the image by specifying the left, right, top, and bottom pixel
coordinates. Device columns are numbered 0 through 1279, and device rows are
numbered 0 through 959.
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Example of Image Crop set to 200B:
Alternately, specify the number of pixels to cut from the outside margin of the
image; thus only the center pixels are transmitted.
Vuquest 3320g User Guide
0KGamma correction off (default)
50KApply gamma correction for brightening typical document image
nKApply gamma correction factor n (n = 0-1,000)
Example of Gamma
Correction set to 0K:
nLThe left edge of the shipped image corresponds to column n of the image in
memory. Range: 000 - 843. (Default = 0)
nRThe right edge of the shipped image corresponds to column n - 1 of the image
in memory. Range: 000 - 843. (Default = all columns)
nTThe top edge of the shipped image corresponds to row n of the image in
memory. Range: 000 - 639. (Default = 0)
nBThe bottom edge of the shipped image corresponds to row n - 1 of the image
in memory. Range: 000 - 639. (Default = all rows)
Uncropped Image:
Example of Gamma
Correction set to 50K:
IMGSHP Modifiers
Example of Image Crop
set to 300R:
Example of Image Crop set to 200T:
Example of Gamma
Correction set to 255K:
(see page 151).
Example of Image
Crop set to 300L:
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