Oce 3121 Technical & Service Manual page 293

Sharpness/Filter Processing
In sharpness/filter processing, computations are performed so that a crisp or
soft image may be obtained as specified on the control panel.
Figure B shows the output level occurring as the result of selecting 'sharpness
mode weak' for the image data shown in figure A.
In 'sharpness mode weak', the variations in the density of an image are
smoothed out to generate a soft image. (The effect may be used to make moiré
less conspicuous.)
Figure C shows the output level occurring when 'sharpness mode strong' is se-
lected.
In 'sharpness mode strong', the variations in the density of an image are em-
phasised to generate a crisp image.
Black
White
Black
Main scanning direction
White
B sharpness mode weak
ed.1
A
Black
White
After output
Main scanning direction
After output
Main scanning direction
After output
C sharpness mode strong
08 Image processing 517