Banner PresencePLUS P4 EDGE 1.3 Series - Manual (Page 114)

Description Field/Graph
Value is displayed when Type is Absolute. Enter a specific gray scale value from
0 to 255. Value
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.
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.
P/N 000000 Banner Engineering Corp. - Minneapolis, MN USA - www.bannerengineering.com
Tel: 763.544.3164
114
7/2009 PresencePLUS Software Tools