Adept AdeptSight User Guide - Manual (Page 471)

Configuring Line Finder Properties
Finder tools detect edges in the input images, then uses edges to generate a vectorized
description called an entity.
l Line Finder parameters modify the quality and quantity of edges that are generated
from the input image.
l Edges are detected parallel to the Y-Axis, moving through the region of interest in a
negative-to-positive direction relative to the X-Axis.
Minimum Line Percentage
Minimum percentage of line contours that need to be matched for a line hypothesis to be con-
sidered as valid.
0 < Range ≤ 100.0
Polarity Mode
Sets the mode that will apply to the search for entities. Polarity identifies the change in grey-
level values along the tool’s X axis, in the positive direction.
The available modes are:
l Dark To Light: The Line Finder searches only for lines occurring at a dark to light tran-
sition in grey-level values.
l Light To Dark: The Line Finder searches only for lines occurring at a light to dark tran-
sition in grey-level values.
l Either: The Line Finder searches only for lines occurring either at a light to dark or dark
to light transition in grey-level values. This mode will increase processing time.
l
Don’t Care: The Line Finder searches only for lines occurring at any transition in grey-
level values including reversals in contrast, for example, on an unevenly colored back-
ground.
Search Mode
Search Mode specifies the method used by the tool to generate and select a hypothesis.
The available modes are:
l
Best Line: Selects the best line according to hypotheses strengths. This mode will
increase processing time.
l
Line Closest To Guideline: Selects the line hypothesis closest to the Guideline.
l Line With Maximum Negative X Offset: Selects the line hypothesis closest to the
Configuring Line Finder Properties
AdeptSight User's Guide, Version 3.2.x, Updated: 8/23/2012
Page 471