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User’s M anual
4- 12
4 .3 .2 Other I m age Opt ions
Bin arization Thi
s is the process of converting a
grayscale or color im age t o a bi-tonal
im age. There are several different
m et hods of perform ing this conversion.
Opt ions: Dynam ic Thr eshold,
Dynam ic Thr eshold ( AD) , Fixed
Proce ssin g, Halftone 1 ~ 5 , Error
Diffusion.
Dynam ic Thr eshold: Selecting
Dynam ic Thr eshold allows the scanner
to dynam ically evaluat e each docum ent
to determ ine the optim al threshold value
to produce the highest qualit y im age.
This is used to scan m ixed docum ent
containing faint t ext, shaded background,
or color background wit h a single set t ing.
I f Dynam ic Threshold is select ed,
Threshold, Bright ness, and Cont rast are
not available.
Dynam ic Thr eshold ( AD) : Selecting
Dynam ic Thr eshold ( AD) t o perform
the enhanced m ode of the Dynam ic
Threshold feat ure. However, using t his
m ode m ay slow down your scanning
speed.
Sensit ivit y of Dynam ic Thre shold
Occasionally your scanned im age m ay
contain sm all dot s or speckles. To rem ove
these spots, increase t he sensit ivit y value
by m oving t he bar t o the right . The value
ranges from 1 t o 30. The default is 20.
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