Threshold, Adaptive threshold, Edge strength – Banner PresencePLUS P4 GEO 1.3 Series User Manual
Page 106: Edge length, Legend
Description
Field/Button
Click this button to add a mask to an image. A mask
is a way to remove some anomaly in the ROI that
might deleteriously affect the inspection.
Click this button to remove an ROI or a mask from an
image.
Use this field to rotate the ROI. You can manually key
in a rotation angle, or you can use the up or down
arrow keys to rotate the ROI.
Threshold
Adaptive Threshold
Adaptive Threshold adjusts the edge threshold on each acquired image. The Sensor automatically sets the
threshold and attempts to adjust for contrast variations.
Edge Strength
Edge Strength sets the edge threshold at a predetermined gray scale value from 0 to 127. Edge Strength
provides more control over what gets to be considered an edge pixel.
Edge Length
The tool ignores target patterns with edges equal to or shorter than the specified number of pixels for edge
length.
Legend
All edges found by the Geometric Find tool are color-coded in the Image window. Strong edges show up in
green, and weak edges show up in red.
Note: Both weak and strong edges in the pattern ROI are expected to be present in the
inspection.
P/N 000000
Banner Engineering Corp. - Minneapolis, MN USA - www.bannerengineering.com
Tel: 763.544.3164
106
7/2009
PresencePLUS Software Tools