Digital Image Processing; Overview - Canon GP160DF Service Manual

CHAPTER 4 IMAGE PROCESSING SYSTEM
III. DIGITAL IMAGE PROCESSING
A.

Overview

The digital image processing assembly processes the image signals sent from the
Analog processor PCB.
The following block figure shows the contents of the image processing.
Analog
processor
PCB
DC
controller
PCB
4-4
Shading
correction
Binarization
Figure 4-301
COPYRIGHT © 1999 CANON INC.
Image processor PCB
Magnifi-
cation ratio
processing
Density
processing
CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
• Edge
emphasis
• Smoothing
Logarithmic
correction