Canon imageFORMULA DR-2580C, Service Manual

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COPYRIGHT © 2005 CANON ELECTRONICS INC. CANON DR-2580C FIRST EDITION APR. 2005
2-23
CHAPTER 2 FUNCTION & OPERATION
Line 2 is processed using the first row
of Line 2 as a reference. If the rest is
processed similarly, the data becomes
as shown in Figure 2-514.
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Input data Output data
Figure 2-514
Figure 2-515 shows a comparison of
binarizing with error diffusion proc-
essing, and binarizing without error
diffusion processing (simple binariz-
ing). The brightness adjustment for error
diffusion is done by using the data
conversion table. The slice level is al-
ways set at median.
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With error diffusion processing Without error diffusion processing Digital signal output
Figure 2-515