Edge Enhancement Filter - Microtek ScanMaker i700 User Manual

Filters
The Mask Size determines the depth of the surrounding pixels that
will be affected. The larger the mask size, the stronger the blurring
effect of the filter.
The Threshold allows you to specify a tolerance range or a field of
contrast between adjacent pixels before blurring is applied. Blurring
is applied only when pixel differences are below the Threshold value.
The smaller the Threshold value, the weaker the blurring effect.
The Strength specifies the degree of the filter's effect. The higher
the value, the stronger the blurring effect of the filter

Edge Enhancement filter

The Edge Enhancement filter gives greater contrast to edges. The
filter can do this because edges are areas in an image where gray or
color levels change abruptly. It is best to use this tool for improving
geometrical contoured shapes.
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