Mitsubishi Electric MELSENSOR VS70 Series Setting Manual / Spreadsheet page 115

■Program description
(1) Use the ExtractBlobs function to detect screws.
Specify "Region" and set 3 for "Number to Sort." Set parameters such as "Area Limit: Min" and "Area Limit: Max" as
necessary.
When the settings are confirmed, blobs (screws in this example) are detected within the specified region (Figure 14).
Figure 14 Detecting the screw part
(2) Use the FindBlobs function to detect only the long screw.
Set a value, which is appropriate for screws to be detected, for "Elongation" in the FindBlobs function property sheet.
Additionally, screws can be detected with focusing on only elongation by setting 100 for "Weight" of the elongation, and 0 for
"Weight" of the other parameters.
Figure 15 FindBlobs function property sheet
Refer to ExtractBlobs function
Set parameters according to
the elongation of screws to be detected
Appendix 1 Sample Program
A
APPX
113