Microtek ScanMaker 6400XL Reference Manual page 94

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 Custom filter
parameters in the Filter menu. Click Remove
button to delete
86 Microtek ScanWizard Pro for Windows
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 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
Sample Custom Filter setting and result
Original
Settings of Fine Edge
Find Edge effect