Microtek ScanWizard Industry, Справочное руководство

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ScanWizard Industry Reference Manual 39
A. Blur
The Blur filters eliminate noise in the parts of the image where significant color
transitions occur. These filters decrease the contrast between adjacent pixels,
making the image appear hazy and out of focus.
• Blur smooths out the transitions by lightening pixels next to the hard edges
of defined lines and shaded areas.
• Blur More produces an effect three or four times stronger than Blur.
B. Custom
The Custom Custom Custom Custom Custom filter changes the brightness values of each pixel in the image
according to a predefined algorithm known as convolution. This filter allows
you to define a 3x3 or 5x5 mask size custom filter (see dialog box next page for
details).
Click the center Weight edit box.
This represents the pixel being
evaluated. Enter the value by which
you want to multiply that pixel’s
brightness value. Value range is +/-
99
Click a Weight edit box representing
an adjacent pixel for you to assign a
weighted value. Enter the value by
which you want to multiply the pixel
in that position multiplied.
For example, if you want the
brightness value of the pixel to the
immediate bottom of the current pixel
multiplied by 1, enter 1 in the Weight
edit box right under the center
Weight edit box.
Repeat the last two steps for all the
pixels you want to include in the
operation. It is not necessary to
enter values in all the Weight edit
boxes.
In the Scale edit box, enter the value
by which to divide the sum of the
brightness values of the pixels
included in the operation.
In the Offset edit box, enter the
value to be added to the result of the
scale calculation.
Choose a filter mask size, 3x3 or
5x5. Notice the Weight edit boxes
switches between 5x5 (25) and 3x3
(9) edit boxes.
Enter a filename in the Filter edit box, and click
the Add button to save current customized filter
in the Filter drop-down menu. Click Remove
button to delete custom setting from the Filter
menu.