Rockwell Automation 5370-CVIM2 Module - Manual (Page 404)

Chapter 7
Inspection Tools
7–166
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FG Border –– This feature mode restricts the search for a specified
feature on the basis that the first edge (offset 1.0) is the first point where
the profile image is “below” the threshold setting.
•
BG Border –– This feature mode restricts the search for a specified
feature on the basis that the first edge (offset 1.0) is the first point where
the profile image is “above” the threshold setting.
•
Max Object –– This feature mode restricts the search for a specified
feature to the leading edge and the midpoint of the largest identified
“object” along the length of the threshold.
•
Max FG Object –– This feature mode restricts the search for a specified
feature to the leading edge and the midpoint of the largest identified
“foreground object” along the length of the threshold.
•
Max BG Object –– This feature mode restricts the search for a specified
feature to the leading edge and the midpoint of the largest identified
“background object” along the length of the threshold.
•
Middle FG Object –– This feature mode restricts the search for a
specified feature to the leading edge and the midpoint of the “foreground
object” lying closest to the center of the profile window.
•
Middle BG Object –– This feature mode restricts the search for a
specified feature to the leading edge and the midpoint of the
“background” object lying closest to the center of the profile window.
All Edges
The all edges feature mode enables you to specify an edge from among the
following points along the length of the threshold:
•
All edges detected as a result of the threshold/filter settings.
•
Either end of the profile image, according to search direction.
•
The midpoints between adjacent pairs of edges.
•
The center point between the first edge and the last edge.
FG Border
The foreground border feature mode is identical to the all edges mode,
except that offset
1.0 always coincides with a point where the profile image
moves below the threshold level (in terms of its gray scale value).