4
HP
PrecisionScan Pro
User’s Guide
85
Adjusting images of
pictures
Book Contents
Index
➮
➮
Set threshold for black and white bitmaps
When you want to save a black and white image
from a color or black and white photograph, you
can often improve the result by changing the
threshold for the division between black and white
pixels.
The black and white threshold can be changed
with the
Black & White Threshold
tool for an image
that has the
Black & White Bitmap (raster)
output
type. (See page
34
for more about the
Black &
White Threshold
tool.)
Applying the default threshold
■
Click the
Auto
button in the
Black & White
Threshold
tool.
•
The optimal black and white threshold setting
determined by the scanning software is
applied to the
Black & White Threshold
tool.
•
The result of the change to the threshold
setting can be seen in the preview area.
Image of a color
photograph with
the
True Color
output type
The
Black & White
Bitmap (raster)
output
type and a black
and white threshold
of 15 applied
