C2R 30-005, Руководство пользователя

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Colibri serie 6 : User’s guide
© 2000-2012 C2R Technologie, Sarl. All rights reserved.
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Rev. A
U - Document Image Filter:
Sharpens the edges and smoothes 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, 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. 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
•
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 22e. Range: 0-255.
Example of Document Image
Filter set to 0U: Filter set to 26U:
V - Blur Image:
Smoothes 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
Example of Blur Image Off (0V):
Blur Image On (1V):
W - Histogram Ship:
A histogram gives a quick picture of the tonal range of an image, or key