50
4-7 ITEM Overview (Position)
Item Overview
Edge level
0 to 100 (%) (default value: 50)
Set the level of density change to be judges as an edge.
Edge is detected as follows:
1. The density distribution of the whole measurement region is calculated.
2. The maximum value is set to 100%. Minimum value is set to 0%.
3. Place where the destiny is equal to edge level is detected as an edge.
Noise level
0 to 255 (default value: 20)
Set the level to be judged as noise.
Normally this value may be default value of 20. However, set a
higher value when noise is detected as an edge.
e.g.
(Max density -min density) < noise level --> Judged as “no edge”
(Max density -min density) > noise level --> Judged as “edge”
Noise width
0 to 255 (default value: 0)
Set the level to be judged as noise.
Normally this value may be default value of 0. However, set a
higher value when noise is detected as an edge.
Measurement region
Maximum density value
Edge level
Minimum density value
100%
50%
0%
Measurement region
Measurement region
Maximum density value 60
Maximum density value 25
Minimum density value 10
Minimum density value 15
60-15>30
Measurement is performed with an edge
judged as being present.
25-10<30
Process as "no edge".
(Measurement result is NG.)
Edge detection point
Measurement region
Noise width (pixel)
Edge level
50%
Noise is judged as being present
when the densitiy distribution is at
the edge level or lower in the
preset range.
Z01E-EN-01+ZFX+SettingGuide.book Seite 50 Mittwoch, 13. Februar 2008 2:38 14
