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8 - 6 IMAGETEAM™ 2020/4620 System Manual
U - Document Image Filter: Sharpens the edges and smooths the area
between the edges of the transmitted text image. The Document Image Filter
enhances images of documents such as ID cards and prescriptions. This filter
should be used with gamma correction (see page 8-4), with the imager in a
stand, and the image captured using the command:
IMGSNP1P0L168W90%32D
This filter typically provides better JPEG compression than the standard E -
Edge Sharpen command (see page 8-6). This filter also works well when
shipping pure black and white images (1 bit per pixel). The optimal setting is
26U.
0U Document image filter off
(default)
26U Apply document image filter for typical document image
n
U Apply document image filter using grayscale threshold n. Use
lower numbers when the image contrast is lower. 1U will have a
similar effect to 22e. Range: 0-255.
V - Blur Image: Smooths transitions by averaging the pixels next to the hard
edges of defined lines and shaded areas in an image.
0V Don’t blur
(default)
1V Blur
W - Histogram Ship: A histogram gives a quick picture of the tonal range of
an image, or key type. A low-key image has detail concentrated in the
shadows; a high-key image has detail concentrated in the highlights; and an
average-key image has detail concentrated in the midtones. This modifier
ships the histogram for an image.
0W Don’t ship histogram
(default)
1W Ship histogram