C2R Colibri 5 30-001, User Manual

Page: 102 / 168

Colibri serie 5 : User’s guide
© 2000-2008 C2R Technologie, Sarl. All rights reserved.
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Rev. C
Example of Pixel Ship
set to 1S: set to 2S: set to 3S:
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 (see page 100), 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 98). 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):