Banner PresencePLUS P4 COLOR Series - Manual (Page 100)

Graph Tab
When Edge Strength is selected, the Graph tab appears on the tool window. The graph for the Input tab overlays both
the edge strength graph and the edge profile. In the Graph tab, the edge profile graph and the edge strength graph are
separated for easier viewing.
The top graph, Edge Profile, represents the absolute gray scale level across the Edge tool.
The bottom graph, Edge Strength, represents the change in gray scale along the Edge tool.
Edge Strength detects an edge when the rate of change (solid red line on the screen) 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 lines will adjust together.
Graph Tab
Banner Engineering Corp. Minneapolis, MN USA 100
2/2010 PresencePLUS Software Tools