Rockwell Automation 5370-CVIM2 Module - Manual (Page 402)

Chapter 7
Inspection Tools
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The Filter selection panel also has a “ Size ” field, which is used to select the
size (or width) of the morphology filter to be applied to the profile image.
The default size is 1.
The “ Position ” and “ Distance ” profile tool operations employ “features” to
identify the edges used to locate a position or measure a distance.
A profile tool can detect several edges, of which only one or two are required
for the location or distance measurement. Thus, the edge selection functions
enable you to select particular edges or other features related to the edges,
and to determine other aspects of the search for these edges, including search
direction and search mode. These subjects are discussed in detail in this
section.
When you pick either of the buttons on the profile tool edit panel, a
Feature selection panel appears, as shown in Figure 7.133.
Figure 7.133 Example: Selecting the Feature Selection Panel
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The threshold setting relative to the profile image determines which
foreground–to–background transitions are detected as edges. The purpose of
the feature selection function is to specify which of these edges (or midpoints
between edges) are to be identified as “features,” and used as the basis for
the inspection operation. Each of these features is defined by an offset.
Feature Selection
Functions