156 Vuquest 3320g User Guide
• nMMargin: cut n columns from the left, n + 1 columns from the right, n rows
from the top, and n + 1 rows from the bottom of the image. Ship the remaining
center pixels. Range: 0 - 238.
(Default = 0, or full image)
P - Protocol
Used for shipping an image. Protocol covers two features of the image data being
sent to the host. It addresses the protocol used to send the data (Hmodem, which
is an Xmodem 1K variant that has additional header information), and the format
of the image data that is sent.
• 0PNone (raw data)
•2PNone (default for USB)
• 3PHmodem compressed (default for RS232)
• 4PHmodem
S - Pixel Ship
Pixel Ship sizes an image in proportion to its original size. It decimates the image
by shipping only certain, regularly spaced pixels. For example, 4S would transmit
every fourth pixel from every fourth line. The smaller number of pixels shipped, the
smaller the image, however, after a certain point the image becomes unusable.
• 1Sship every pixel (default)
• 2Sship every 2nd pixel, both horizontally and vertically
• 3Sship every 3rd pixel, both horizontally and vertically
U - Document Image Filter
Allows you to input parameters to sharpen the edges and smooth the area between
the edges of text in an image. This filter should be used with gamma correction
(see page 154), with the scanner in a stand, and the image captured using the
command:
IMGSNP1P0L168W90%32D
Example of Image Crop set to 238M:
Example of Pixel Ship set to 1S:
Example of Pixel
Ship set to 2S:
Example of Pixel
Ship set to 3S:
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