Banner PresencePLUS P4 EDGE 1.3 Series - Manual (Page 108)

The Edge Strength graph represents the change in gray scale along the tool ROI. Edge
Strength detects an edge when the rate of change (solid red line on the graph) crosses the
selected intensity change amount (dashed green lines on the screen).
A bright-to-dark transition has a negative edge strength value, and a dark-to-bright transition
has a positive edge strength value. When the Edge Strength level is adjusted, both the
negative and positive green dotted lines will adjust together.
Filters
Description Field
Increases in increments of 4 pixels (for example, 1, 5, 9, 13, ...) up to the
total FOV size. Some things to note: ROI Width
• Narrow ROIs execute faster but could miss the edge.
• Wide ROIs are more consistent but don't execute as fast.
• The ROI must be 13 pixels or wider to calculate the rotation of a part.
Runs a rolling average along the ROI length. It filters out sharp changes in
the edge profile. Smoothing
Note: A high filter number may miss the edge of a narrow line.
P/N 000000 Banner Engineering Corp. - Minneapolis, MN USA - www.bannerengineering.com
Tel: 763.544.3164
108
7/2009 PresencePLUS Software Tools