Output Image Processing; Smoothing - Canon iR1600 Service Manual

4.14 Output Image Processing

The output image data sent to the printer unit is subjected to the following processing:

4.14.1 Smoothing

The machine uses smoothing to remove the jaggy edges from diagonal or curved lines of
images, thus producing images consisting of smooth lines. Using smoothing, the machine
can make moire associated with photo originals less conspicuous.
a. When Generating Read Images
The machine converts an 600x600-dpi input image into data of 1200 (equivalent) x 600
dpi by smoothing, which is carried out by relocating specific pixels in question.
b. When Generating Printer (PDL) Images
PDL data is subjected to appropriate smoothing, thus converting images of 600 x 600
dpi into images of 2400 (equivalent) x 600 dpi.
COPYRIGHT© 2002 CANON INC.
CHAPTER 3 IMAGE READING/PROCESSING SYSTEM
2000 CANON iR1600/iR2000 REV.1 JAN. 2002
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