Banner PresencePLUS P4 EDGE 1.3 Series - Manual (Page 107)

Description Field/Graph
• Bright or Dark finds any edge.
In the Edge Profile graph displayed when the Absolute threshold is selected, the
red line shows the percentage pixel intensity relative to the green threshold line.
The threshold line will move up or down with the percent value. Edge Profile Graph
Edge Strength
Edge strength measures the rate of change of grayscale values and needs sharply-defined transitions. Edge
strength is more tolerant of gradual changes in light levels across the tool than other transition types and it will
filter out weak or gradual edges.
Description Field
Enter an edge bandwidth value from 1 to 255. Edge
Polarity
• Bright to Dark finds edges that start above the threshold value and cross below
the threshold value.
• Dark to Bright finds edges that start below the threshold value and cross above
the threshold value.
• Bright or Dark finds any edge.
Graph Tab
When Edge Strength is selected in the Input tab, the software displays the Graph tab. This
tab provides similar information to the Input tab, but displays separate Edge Profile and
Edge Strength graphs for easier viewing.
The Edge Profile graph represents the absolute gray scale level across the tool ROI.
107 Banner Engineering Corp. - Minneapolis, MN USA - www.bannerengineering.com
Tel: 763.544.3164
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PresencePLUS Software Tools 7/2009