7 Binarization and Color Separation
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Range tab
The
Range
tab is used to tune the following range methods:
Range by Grey, Range
by RGB
or
Range by HSV.
Colors
This list shows information on the
central colors
of the specified ranges and allows
you to select a range for correction and deletion. The left part of the list element
shows a sample of a selected color (or grey tone), and the right part shows color
component values in the current color model (grey level for grayscale images). To
select a range, click its appropriate color in the
Colors
list.
Above there are three buttons with eyedropper bitmaps, these allow you to create
new ranges.
Color selection
allows you to create a new range by selecting a color in the
image. Click the button and specify a color on the image with mouse.
WiseImage creates a new range, using the color of the specified pixel as the range
central color.
Averaged color selection
allows you to create a new range by choosing an
averaged color in the area around the pixel clicked.
WiseImage calculates the average color value in the area of the specified pixel and
creates a new range, using the calculated color as the
range central color
. The half-
lengths of the created range are automatically adjusted to take the closest colors,
found in the specified pixel area.
Area averaged color selection
allows you to create a new image by
calculating the averaged color of an arbitrary area in the image.
Click the button and specify the vertices of a polygonal area or drag the cursor,
outlining the boundary of the polygonal area. Complete the area selection with a
double-click. WiseImage calculates the average color value in the specified area
and creates a new range, using the calculated color as the
range central color
. The
half-lengths of the created range are automatically adjusted to close colors, found in
the specified pixel area.
Ranges
Using this box you can change the half-lengths of a range, selected from the
Colors
list. The type, name and number of sliders and boxes depend on the current
conversion method. For example, if you choose
Range by HSV
, the following
sliders and boxes to modify the range half-lengths are displayed: hue– H,
saturation – S and brightness – V.
If you choose
Range by Grey
, then there is only one slider and one box to enter the
half-length of the brightness range.