Omron F250-UME, Руководство пользователя программного обеспечения

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2-23-(5)
ECM Search Section 2-23
2-23-2 Extracting Edges
ECM search is performed for images for which the edges have been extracted.
Adjust the upper and lower levels so that the edges of the mark to be found are
extracted.
Upper and Lower Limits
Set the upper and lower limits so that the edges of the mark to be found are
extracted. The levels can be set between 10 and 255 (default 100:255).
Mask Size
The mask size function is used when searching for edges to judge edges
using peripheral information. Select how much peripheral pixel information to
use. The selections are 5
™
5 (default) or 3
™
3.
CHECK
This setting will be enabled only if Frame/Field under Camera image is set to
Frame. If set to Field, the effect will remain the same as if 5
™
5 is selected
even if 3
™
3 is selected.
1. Select Extract edges.
[5
×
5]
[3
×
3]
Example: Select 3
™
3
Information from the surrounding 9
pixels is used to determine whether
or not the center pixel is the edge.
(1 square = 1 pixel)
The greater the mask size, the more the variations in
surrounding pixels can be absorbed. Select 5
™
5 to ignore
uneven edges.
The edges are thicker when 5
™
5 is selected. If the size of
the measurement object varies or if the measurement
objects are on an angle, thicker edges give greater
performance.
This function is even more effective if smoothing is used.
Refer to
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and
)LOWHULQJ
$JDLQ
(where smoothing can be set to be executed twice).
Select 3
™
3 to detect minute
differences from the model.
1.ECM search
Measurement image
Extract edges
Measurement conditions
Model registration
Search coordinate
Search region
Judgement conditions
Detailed conditions
Coordinate mode