ScanWizard Industry Reference Manual 33
White/Black Points Setup
This button provides you with advanced controls for setting the clipping points
for your white and black points, as well as determining the output levels for the
white/black points on your printer.
To use this feature, click the
Setup
button in the White/Black Points dialog box.
When the dialog box comes up, specify your preferences.
A. Auto Clipping
The
Auto White Point Clipping
and
Auto Black Point Clipping
fields allow you to
specify the percentage by which the white and black points, respectively, can be
clipped from the histogram. The clipping is done after you click the Auto button
in the AIC White/Black Points dialog box.
For example, if you specify 10 percent as your White Point clipping value and
then click the Auto button, the white point on the histogram is adjusted so that
10 percent of the color information is “clipped” or ignored. The resulting 90
percent information leftover is then remapped, resulting in an image with less
highlight detail.
The same principle above applies to the Auto Black Point Clipping feature, which
governs the black point for shadows. These fields are normally used by more
advanced users.
.
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