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Shared settings
(4) Object identification and numbering function, (labeling)
Object identification and numbering (labeling) is a process for locating separate object and
assigning serial numbers (labels) one at a time in a binary image. By this process, multiple objects
in the same binary image can be handled separately or as a group.
[Measurement programs which are affected by these settings]
Distance and angle measurement (center of gravity: page 9-62)
Counting quantities by binary conversion (page 9-93)
Identifying object by binary conversion (page 9-101)
(5) Binary processing (fixed/threshold value correction)
By setting THESHLD. ADJ (threshold adjustment function), the IV-S20 can cope with variations
in lighting.
9
Threshold correction value
Threshold correction using either VAR-DIFF (enter variations in lighting as value) and
VAR-RATE (enter variations in lighting as a rate) can be selected the THRSHOLD-ADJ
(the threshold adjustment function).
Threshold value
adjustment
[Measurement programs which are affected by these settings]
Degee of match inspection for shape and size (binary conversion: page 9-51)
Distance and angle measurement (center of gravity: page 9-62)
Area measurement by binary conversion (page 9-85)
Counting quantities by binary conversion (page 9-93)
Identifying object by binary conversion (page 9-101)
Point measurement (binary images: page 9-109)
Binary
conversion
3
4
Fails to convert the image
due to a variation in lighting
Set (selection) item
Correct the threshold value by adding the previously specified threshold
Variation
value to the light level variation difference.
difference
(Measured light level – reference light level) + specified threshold value
Correct the threshold value by multiplying the previously threshold value
Variation
to the light level variation rate.
rate
(Measured light level ÷ reference light level) x specified threshold value
Object
identification
(in order of
scanning)
Object identification
(in order of area)
2
Island
1
(threshold adjustment function), the
monitor brightness functions must
be selected to measure variations
in lighting. If you don't select the
Fixed
monitor brightness function, a
COMP. BIN: ILLM. MON. UNSET
(correcting binary value: monitor
illumination not selected) error will
occur.
Details of correction
9-8
1
2
3
4
Island
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