User`s manual

84 Microtek ScanWizard Pro for Mac OS X
White & Black Points tool (LCH color mode)
The White & Black Points tool is used to change the shadow and highlight
points of an image. (See note on next page for additional descriptions.)
By using this tool, you can manipulate an image to either bring out the
highlights in a very dark image, or bring out more of the shadows in a very light
image. The White & Black Points tool can also be used to neutralize the color
cast in the highlight and shadow regions.
Observe histogram
values for
distribution of the
Lightness "L"
channel in the
image, as cursor is
swept around
histogram
Check to auto
neutralize unwanted
color casts in Shadow
(black) area or
Highlight (white) area
Enter custom Lightness, Chroma &
Hue values for Highlight (White area)
here. C & H values are applicable only
when the Auto Neutralize - Highlight
check box is enabled
Enter custom Lightness,
Chroma & Hue values for
Shadow (Black area) here.
C & H values are applicable
only when the Auto
Neutralize - Shadow check
box is enabled
Drag sliders to
define custom
shadow and
highlight
settings
Click to let ScanWizard
Pro determine the shadow
and highlight points
automatically
Click to bring up the
White/Black points
setup dialog box. For
more details, see the
section titled White &
Black Points Setup
(under the
Preferences menu in
the Preview window)