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152 WinView/32 Manual Version 2.4.M
Parameters tab page
Edge enhancement is accomplished by mask operations defined by parameters entered
on the Parameters tab page. These functions can enhance edges, sharpen or smooth
features, or erode or dilate an image. How these images are processed is briefly
described below.
A mask is an n n matrix (n is 3 for all WinView/32 operations) that is placed over
every n n subsection of the image. Each parameter in the mask is multiplied by the
corresponding value of the image. The results are summed and placed in the central
position in the output file. An example will help illustrate the process.
The following is the Laplacian 1 mask, used to enhance edges.
-1 -1 -1
-1 8 -1
-1 -1 -1
Here is an example of a 3 3 subsection of an image. The middle pixel has the
coordinates 100, 100.
20 20 19
20 21 20
20 19 20
Figure 129.
Edge
Enhancement
Input tab page.