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COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
4-19
CHAPTER 4 IMAGE PROCESSING SYSTEM
I. Detecting the Orientation of Originals
In this block, the orientation of text data is checked to identify the orientation of an original so that
reduced page composition may take place in the correct orientation regardless of the orientation of
each original in the ADF.
Figure 4-308 Conceptual Diagram of Detection
IP PCB
Flash ROM
Image data
Communicates the result of
detection to the IP PCB.
[1] 0˚
[2] 90˚
[3] 180˚
[4] 270˚
[5] Not known (output as is)
8
2
0˚
90˚
180˚
270˚
All image data is
read, and text
areas are
extracted.
The text data in
storage and the
fonts in the
dictionary are
matched to identify
the orientation of
the text.
Image data is subjected to binary
processing to speed up processing.
Stores language
dictionaries.
Text area
detection block
Text orientation
detection block
Text data storage
block
Dictionary storage
block