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User’s M anual
4- 60
Despeck le
Occasionally sm all dot s or specks appear in t he background of
a scanned im age. Rem ove unwant ed speckles provides a
cleaner im age for OCR ( Opt ical Charact er Recognition)
processing, and also helps t o reduce com pressed file size.
Define t he speckles ( also known as im age noise) you wish t o
rem ove by specifying its num ber (size) and radius ( range). The
m easuring unit is pixel. The higher the num ber, the m ore
speckles will be rem oved.
Before Despeckle
( noise num ber: 0, noise radius: 1)
Aft er Despeckle
( noise num ber: 22, noise radius: 10)
N ot e:
The funct ion is current ly available for Black and White
im age only.
To scan at rat ed speed, it is recom m ended t o set the
noise radius up to 10 pixels.
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