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OCR Type A230
9.2
Smart Matching Checker Setup
1.
Set the number of the matching checker to be created.
2.
From Select camera, select which camera (A or B) will supply the image on
which the checker will be activated.
3.
Select Checker Setting, then Template.
4.
Set the coordinates of the template area.
5.
Set the output point for the detected point coordinates.
Set the output point somewhere within the template area. Press A:Tmp. Cnt.
to set the point in the centre of the area.
6.
Set the search area.
Set only the area necessary, keeping in mind the effects of the search area
size on processing speed.
7.
Set the sequence.
Set the search conditions for each step, keeping in mind the effects of these
conditions on the detected objects and search time.
8.
Set data output conditions if necessary.
When searching for multiple objects in a single search area, it is easier to
determine which detection results correspond to which search object data
output conditions are set.
9.
Enter subtraction settings if necessary.
From Subtraction, select Yes.
10.
Set the subtracted area judgment.
Set the upper limit value for the area of detected pixels from the subtraction
result (the number of pixels up to which the result is OK).
11.
Set the subtraction threshold value
Set the threshold value that will be applied when performing binary processing
on the gray scale difference between the template and the search object. The
threshold value can be set in the range 0 to 255.
12.
Set filters if necessary.
You can select whether to apply only an erosion filter (3 × 3 or 5 × 5 erosion),
or a filter that first erodes the image and dilates it, or conversely, a filter that
dilates the image and then erodes it.
If you want to conceal small noise or garbage, use the erosion → dilation filter
to erode the image and eliminate small bits of garbage, and then dilate the
image. Eroding the image allows you to restore the details of the search object
and to eliminate only the garbage. Likewise, you can use the dilation →
erosion filter to eliminate small pinholes, etc.
13.
Set deviation processing if necessary.
14.
Set the number of the position and rotation adjustment group.
Smart Matching
9.2
Smart Matching Checker Setup
9 − 17
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