Panasonic PV500 User Manual page 203

Smart Edge (Line)
This checker detects an object in the same method of Smart
Edge (Line) The intersection point of two approximate lines
detected with two base checkers is considered as the base
position, and the angle of the median on two approximate lines is
considered as the base angle.
Rotation Adjustment
Binary Edge (Horizontal) / Binary Edge (Vertical),
Gray Edge (Horizontal) / Gray Edge (Vertical)
These checkers detect two points in the same method of Binary Edge checker or Gray Edge checker, and
calculates an object gradient.
Binary Edge (Horizontal) and Gray Edge (Horizontal) scan horizontally to detect edges. Binary Edge (Vertical)
and Gray Edge (Vertical) scan vertically to detect edges.
These checkers can obtain a middle point of two points (center detection) other than edges of an object as a
base position.
Center Detection
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