User`s manual

12-3
Multiple Degree of Match Inspection
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1212
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DTECT PRECISION
Select detection precision. You can select one
of two levels (standard/high), according to
your conditions, the desired precision level for
detection results, and the detection speed.
For details, see page 3-9.
REGISTER NO.
4 registers are available for the multiple
degree of match inspection (Registers 0 to 3).
If you want to set the measurement conditions
for a different register number, press the SET
key to highlight the register number currently
selected. Then press the up and down arrow
keys to select the register number whose
measurement conditions you want to set.
Press the SET key to confirm your selection.
MODE
Select detection precision.
MATCHING
Select a density for comparison when inspecting the image. The details are as follows.
DETECT ORDER
Select "SCAN-ORDER" or "MATCH LVL" on the " DETECT ORDER" line.
SCAN-ORDER (in the order scanned): Searches in the order scanned.
MATCH LVL (degree of match): Searches by comparing levels with the reference image.
DTECT OBJECT
"S" will be displayed for the objects to be detected.
MEAS CND SCREEN COND SAVE
1
DTECT PRECISION STANDARD
2
REGISTER NO. 0(0~3)
3
MODE YES
4 MATCHING AVG-GRAYS
5 DETECT ORDER SCAN-ORDER
REGISTER NO.
6
DTECT OBJECT
15141312111009080706050403020100
× S× ×
F C1 DRK
SET=SELECT A MENU ESC=BACK SEL=CHNG IMG TRG=FUNC
STANDARD
HIGH
SCAN-ORDER
MATCH LVL
AVG-GRAYS
DIFF.ABS
NO
YES
00102030
S
×××
Description
Obtain average light level of the image in the area detected using the gray search.
Calculate the difference of the absolute values from the image detected using the
gray search and the reference image. The result is light level difference. By
obtaining this value, you can get an idea of the total change in light level.
Total light level difference = Σ(Ni — Nt)
Ni : Light level of the captured image (contraction 3)
Nt : Light level of the reference image (contraction 3)
Average
light level
Difference
absolute
value