50 Microtek ScanWizard Medi Reference Manual
C. Channel
The channel allows you to control the shadow and highlight settings for Gray
channel.
D. Input, Count, Percent
These figures provide information about the histogram. The figures will appear
only when the cursor is on the histogram or if a slider is being moved.
•
The Input value indicates the color value of the data displayed in the
histogram.
•
The Count value indicates the number of pixels at the Input value. If Input
value is 2 and Count value is 1300, then there are 1300 pixels in the image
at the Input value of 2.
•
The Percent value is the percentage of all pixels in the image where color
value is less than or equal to the input value. For example, if Percent is 15%
and Input value is 2, it means that 15% of all pixels in the image have a value
of 2 or less.
E. The Setup button
This button provides you with advanced controls for setting the clipping points
for your white/black points, as well as determining the output levels for the
white/black points on your printer.
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).
F. Pickers
The Pickers can be used instead of the sliders to set the Black and White points,
based on color values in the preview image. The Picker on the left sets the Black
point; the Picker on the right sets the White point.
•
To set the White point: Click the Picker on the right, then click on the
preview image to define the reference point.
•
To set the Black point: Click the Picker on the left, then click on the
preview image to define the reference point.
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