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6.20 Rotation Adjustment (Feature Extraction)
6.20.1 Setting Procedure
The way of detecting edges by Areas 1 and 2 and the setting procedure for edges are the same as those used for
"Feature Extraction" (see page 106). In this section, the functional differences between Rotation Adjustment
(Feature Extraction) and Feature Extraction and instructions for test execution are described below.
Feature Data That Cannot Be Detected
With the Position Adjustment (Feature Extraction) function, you cannot detect the following feature data except
for the center of gravity.
•
Perimeter
•
Project Width
•
Principal axis angle
•
Area (but, the Max. /Min. Area Limit functions are available. It is possible to perform sorting according to
the max. /min. area limits.)
When There Are Multiple Objects Fulfilling the Conditions
Be sure to sort the objects. After doing this, the first sorted object is detected. Sorting can be performed in the
descending/ascending order of area, x coordinate and y coordinate. If you do not sort the objects, the PV310
cannot detect the object which comes first, resulting in an unstable inspection. Refer to page 117 for the sorting
function.
Running a Test
Before saving a base position, you can perform a test to check whether or not objects were detected. When a live
image is currently displayed, import a new image first and begin the test. When a memory image is displayed, run
a test using the current memory image without capturing any images.
1.
Select "POS. ADJ. (FEATURE)".
2.
Press the A key while the tab or item under the tab is highlighted is highlighted.
If no object was detected, the following error code will appear under the judgment results in the message
area.
E0044
Check to make sure that the error code above does not appear or the objects were detected.
In the following cases, Boundary is automatically set to "ON". You cannot change the setting.
•
Inspection areas are circle or polygon in shape.
•
Mask areas have been set.
•
Labeling has been set to "No".
You can refer correction angle to a Numeric Calculation formula and output it to the external device. But, you
cannot refer the principal axis angle that was detected during inspection to a Numeric Calculation formula or
output to the external device.
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