3.3 Optional image function
3-23
(2)
Image Emphasis
Image Emphasis performs filtering to emphasize image edges or to smooth (IPC-2D) or
remove background noise (IPC-3D). If text edges are not clear or faint, turn on the Image
Emphasis. Three levels of Image Emphasis, High/Mid/Low, are available. As a side effect,
Image Emphasis also emphasizes the noise. It is better to set Image Emphasis higher to obtain
good image, until the noise is not perceptible.
In IPC-2D, Smooth is also available which works as negative emphasis so image edges
becomes faint even if original is ordinary sharp.
In IPC-3D, Background Removal is available instead of Smooth. Background Removal is
effective to remove background tones. For the case of the texts surrounded by halftone pattern
such as dither, background should be removed to emphasize the text. Background is useful for
such cases.
The algorithm of Smooth and Background Removal is deferent but the outputs are similar.
Table 3.17 Parameter of Image Emphasis
Option
Parameter
Image
control
register No
value
Default
Common
Outline Extraction OFF
B’101xxxxx’
OFF
No Emphasis and smoothing
B’xxxxx000’
High emphasis
Mid emphasis
Low emphasis
B’xxxxx001’
B’xxxxx010’
B’xxxxx011’
IPC-2D
Smooth (Negative effect of emphasis)
B’xxxxx1xx’
OFF
No emphasis and background removal
B’xxxxx000’
High emphasis
Medium emphasis
Low emphasis
B’xxxxx001’
B’xxxxx010’
B’xxxxx011’
IPC-3D
Removes noisy background
A#2/B#2
B’xxxxx1xx’
Off
Summary of Contents for M3097DE
Page 1: ...C150 E102 01EN M3097DE Image Scanner OEM Manual...
Page 2: ......
Page 4: ...This page is intentionally left blank...
Page 42: ...3 3 Optional image function 3 21...
Page 43: ...Image Functions 3 22 The conceptual image processing flow in the IPC mode is shown below...
Page 45: ...Image Functions 3 24...
Page 70: ...5 3 Cleaning 5 15 Two rollers are included Figure 5 5 Pick roller...
Page 73: ...6 3 Figure 6 1 Jam clearance...
Page 197: ...Scanner Interface Appendix A 124 5 Dimensions of the board For M3093EX DE and M3097DE...
