Ricoh IS430 - Manual (Page 42)

Image Scanner User's Manual
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¡ Binary filter
Function: You can use 4 binary filters; noise elimination, smoothing, thickening black lines
and edge extraction in binary scanning.
Noise elimination: Eliminates independent black or white dots.
Smoothing: Flattens uneven dots.
Thickening black lines: Thickens thin lines.
Edge extraction: Extracts outlines of the image.
Usage: For example, use filters at following cases.
Noise elimination: Use this filter when scaninng a document which is copied
several times. Black dots in a white area and white dots in a
black area will be eliminated.
Edge extraction: Use this filter if you need outlines of an image for design
etc.
Thickening black lines: Use this filter when scanning thin lines or characters.
Smoothing: If edges of a scanned image are uneven, scan it with this
filter again. Edges will be even.
filtered
not filtered filtered
not filtered filtered
not filtered filtered
not filtered
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