Reference Manual
Chapter
4
IVC-2D
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SICK AG • Advanced Industrial Sensors • www.sick.com • All rights reserved
95
Edge
Figure – Edge finding using Absolute evaluation.
Input Parameters
01 = Source bank
Selected image bank for the processing of this
function
02 = Type
Selected type of threshold
Absolute
sensitive to absolute variations of gray
values.
Relative
sensitive to relative variations of gray
values (Input parameter
Gray high
will
be ignored)
03 = X center
X coordinate of the circle or ellipse center.
04 = Y center
Y coordinate of the circle or ellipse center.
05 = X radius
Value of the radius in X direction.
06 = Y radius
Value of the radius in Y direction.
07 = Gray low
Lower gray value threshold.
When using evaluation type
Relative
, this value
is the required change in gray values.
08 = Gray high
Upper gray value threshold.
Note that this value will be ignored when using
evaluation type
Relative
threshold.
09 = Type of transition
Only available with evaluation type
Relative
. Note
that this value will be ignored when using evaluation
type absolute threshold.
Defines direction of evaluated gray value transitions.
1
= transitions from dark to bright.
–1
= transitions from bright to dark.
0
= transitions in both directions.
10 = Scan interval
Distance of compared pixels (in pixels).
11 = Average pixels
Number of averaged pixels for gray value.
12 = Min edge distance
Only available with evaluation type
Relative
. Note
that this value will be ignored when using evaluation
type
Absolute
.
Number of pixels that will be skipped if a transition
is found.
1
2
Scan interval
:
Distance of pixels that
will be compared.
Min width
:
Number of consecutive pixels
with values that must be in-
between selected thresholds
Average pixels
:
Value 2 means gray values
will be averaged out
of two pixels.
