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COPYRIGHT © CANON ELECTRONICS INC. 2012
CANON P-208 FIRST EDITION
2-13
CHAPTER 2 FUNCTION & OPERATION
2. Image Processing Control
A block diagram of the image process-
ing is shown below.
CIS unit
(upper)
CIS unit
(lower)
Control PCB
(when on)
Data reordering
Computer
USB I/F
Shading correction
Resolution
conversion
Color / black &
white detection
Analog processor
•
• Gain adjustment
Offset adjustment
• A/D conversion
Scanner controller
• LED light control
• 12 bit
8 bit
Color
Color correction
(three-dimensional)
Bleed-through reduction (when on)
One-dimensional gamma correction
Edge enhancement
Binarization
Binary
Data after image processing
Other processing
• Auto-size
detection
• Deskew
• Image rotation
• Skip blanks
• File creation
• Other
Grayscale
Color
Grayscale
Figure 2-402
Содержание P-208
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