Panasonic PV500 User Manual page 132

Detecting Black/White Reversed Image
To detect an image which has reversed gray level of registered image
pattern, use the function of "Detect B/W Reversed Template". This
function allows to perform an inspection without lowering correlation value
because of image reversal.
1.
Select "Inspection Condition".
2.
Select "Yes" for "Detect B/W Reversed Template".
Condition to Label Detected Images (Sorting)
When multiple images were detected, the function arranges in a certain rule and numbers them in ascending
order from the first object as No.0. This is a function used to output and calculate information on detected
images such as coordinate, angle, and correlation value.
1.
Select "Sorting" and specify information to
use in sorting.
Select from Correlation Value, X, and Y.
2.
Select "Sorting Order" and then select either
of Ascending or Descending.
Ascending: Sorts with the object of small value
in the top.
Descending: Sorts with the object of large value
in the top.
When setting X and Ascending, it sorts in ascending order with the object of the smallest X coordinate in
the top. You can confirm the result in the detected result list.
In the Case of Detection Failure
If you cannot detect the part you want to detect as the result of tests, adjust three conditions described below
according to the inspection conditions and image status. Using the functions below takes longer time to
process compared with the case being not in use.
Detect Mode - Low Contrast
If the difference in brightness is small between an
object image and the background, or some parts
of object image is chipped or shielded, the
checker may not detect it correctly. In such
cases, set "Detect Mode" to "Low Contrast" and
then specify its intensity (Filter Adjustment).
Feature and Usage of the Object
• Higher contrast, no shielded or chipped part
• Type recognition, quality inspection
• Higher contrast, possible existence of shielded or chipped
part
• Position detection
130
Template
Detecting Image
Detect Target Filter
Adjustment
Normal ---
Low Contrast No
Processing
speed
Fast
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