FUJITSU C150-E187-01EN - Manual (Page 44)

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OCR Smoothing
This option specifies whether to enable the function that modifies the zigzag lines in the line
drawing to smooth curves.
If this option is selected, the smoothing function is enabled.
For IPC-3/3D, either [Noise Removal] or [Smoothing] can be selected.
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Noise Removal
This option automatically removes spots that appear as black stains in a white area and spots
that appear as white stains in a black area.
This option uses an algorithm that removes particles from 2 x 2 to 5 x 5 dot matrixes. The
size of one dot depends on the resolution setting, and is equivalent to 1/400 inch for 400 dpi.
Particles are distinguished from the text by whether they are connected to other dots within
the specified number of pixels.
[Noise Removal] and [Smoothing] are valid only for IPC-3/3D.
Figure Advance dialog (DTC Mode)