Unstable Shape Search Ii Results - Omron FQ2-S/CH Series User Manual

Unstable Shape Search II Results

Inclined Measurement Objects
Adjust the [Angle range] parameter to increase the range in which a search is made for the model.
The Shape Search II inspection item judges whether an image is OK or NG according to the correlation with a
previously registered image pattern. For this reason, if the object is at an angle, the correlation is reduced and
the image may be judged as NG. To achieve an OK judgement for the same image pattern even when the
object is at an angle, the rotation range must be widened.
[Inspect] − [Inspection] − [Shape Search II] − [Modify] − [Details] Tab Page − [Model parameter]
1
Set [Rotation] to [Yes].
2
Press [Angle range] and set the following range.
Parameter
Angle range
Searching for Other Locations
If the model image consists of detailed graphic images, similar models may be detected. In that case, set the
model mode to [Stable].
[Inspect] − [Inspection] − [Shape Search II] − [Modify] − [Details] Tab Page − [Model parameter]
− [Model mode]
Parameter
Model mode
Correlation Is Inconsistent Due to Low Contrast
Adjust the brightness to improve the contrast of the mark.
Adjusting the Brightness: p. 67
Correlation Is Inconsistent Due to Variations in the Measurement Object
Inconsistent portions can be masked so that they are omitted from matching.
Model masking: p. 152
160
Inspecting with the Shape Search II Inspection Item
Setting Description
Range: −180 to 180
A shape search II is performed within the set angle range.
Default: Lower limit: −180,
The larger the angle range, the longer the processing time.
Upper limit: 180
Important
If you change the angle range, perform teaching again.
Setting Description
Stable (default), Fast This function is only valid for color images.
Stable: Creates a model using the three RGB colors.
Fast:
p. 157
Creates a model using only one of the RGB colors. Detection is occa-
sionally unstable for workpieces with the same shape but a different
color.
FQ2-S/CH User's Manual