Kodak Document Scanner 9500 with/without Image Manager 9500 Uživatelský manuál Strana 79

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E-6 A-61122/A-61124 March 1999
Mixed mode/Error diffusion
Mixed mode/Error diffusion processing screens photographic
areas of a document to simulate gray levels, yet sharpens the
edges of text. It is recommended that mixed mode/error diffusion
be used when a mix of text, graphs, pictures, and colors in the
documents are being scanned.
Mixed mode/Error diffusion is not directly selectable. It is the
result of various image processing parameters being set at a
specific value (or within a specific range of values). Refer to
Appendix D,
Image Processing Parameter Defaults
for more
information.
Threshold of 100 to 120
Contrast greater than zero
Screen of 3, 4, 16, 32, or 64
Any of the Image Enhancements filters
Noise filter disabled
NOTE: When mixed mode/error diffusion and Compression are
used together, negative compression (less than 1:1) is
more likely to occur.
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