N4680 2D Decoded Scan Engine User Guide 167
This filter typically provides better JPEG compression than the standard E - Edge
Sharpen command (see page 167). This filter also works well when shipping pure
black and white images (1 bit per pixel). The optimal setting is 26U.
Example:
V - Blur Image
Smooths transitions by averaging the pixels next to the hard edges of defined lines
and shaded areas in an image.
•0VDon’t blur (default)
•1VBlur
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.
• 0WDon’t ship histogram (default)
0U Document image filter off (default)
26U Apply document image filter for typical document image
nU Apply document image filter using grayscale threshold n. Use lower numbers when the
image contrast is lower. 1U will have a similar effect to setting E - Edge Sharpen (page
161) to 22e. Range: 0-255
Document Image Filter
set to 0U:
Document Image Filter
set to 26U:
Example of Blur Image Off Example of Blur Image On
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