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EC Defect
2-15-3-1
Removing Circles
HELP
Circles are detected using edge codes. To remove circles of a different size,
set the removal region for each size.
(As required)
1
2
Set the
Select
circle color.
search ON
or search
OFF.
Circle Extracting Algorithms Using Edge Codes
1.
An edge code image is found.
Edge codes indicate the edge directions (arrows in the diagram).
If the circle is white and the background is black, the arrows will be in the
opposite direction.
2.
The center of the circle is found.
The center of the circle is calculated using the points of intersection from
lines running at right angles to the left of the direction indicated by the edge
code.
The center of the circle is determined by using the most common point of
intersection from the edge codes. This means that the approximate center
of a circle can be found even if the shape is not a perfect circle, e.g., an
ellipse or a circle with a defect.
3
Set
removal
region.
Original image
Circle: Black
Background:
White
Section 2-15
(As required)
4
5
Set circle
Set the
radius.
latitude of
angle.
2-15-(10)
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