Threshold Value Setting; Setting Window Boundaries (Enable/Disable) - Sharp IV-S30 User Manual

Setting Measurement Conditions

(2) Threshold value setting

The IV-S30 treats the "areas darker than the lower limit value" or "brighter than the upper limit value"
as "black." It treats that the areas between the upper limit value and lower limit value as "white."
However, if the white-black reverse function is enabled, conversion to white/black will be reversed.
Normally, if you want to use only one threshold value for binary conversion, set the upper limit value
to "255." Then you only need to adjust the lower limit value to a threshold value that works for our
application.
3
Binary conversion
(upper limit A, lower limit B)
Setting the threshold value automatically
The binary threshold value can be set automatically.
In the binary area condition of each measurement program, execute the "AUTO REGIST" function
(lower limit only or upper and lower limits) and the optimum threshold values will be set in each
measurement area automatically.
- The binary area conditions (binary image mask) menu in the binary area measurement.
Ë Ë Ë Ë Ë Measurement programs which are affected by these settings
BGA/CSP inspection, area measurement by binary conversion, object counting by binary
conversion, object identification by binary conversion, point measurement (binary images)

(3) Setting window boundaries (enable/disable)

This function enables and disables the labeling (object identification) of binary images located that
cross over the window frame boundary.
Ë Ë Ë Ë Ë Measurement programs which are affected by these settings
BGA/CSP inspection, object counting by binary conversion, object identification by binary
conversion
Threshold valve B
Threshold valve A
(Captured image)
1MEAS SHAPE
RECTANGLE CIRCLE ELLIPSE
2MEAS AREA
MOVE UP.L(224.208) LO.R(287.271)
3AUTO REGIST
EXEC(L LIMIT ONLY U&L LIMITS)
4THRESHOLD
U.LM255 L.LM100(0~255)
Binary
conversion
Binary conversion
(upper limit 255, lower limit A)
Binary conversion
(upper limit 255, lower limit B)
(Threshold value)
255
Black
Upper
limit A
White
Lower
limit B
Black
0
Automatic setting
Window
Labeling
(enable
window
boundaries)
Labeling
(disable window
boundary)
1
2
3-8
(Threshold value)
255
Lower
limit A
(Threshold value)
255
Lower
limit B
1 2
3 4
Images 1 and 3 cross over the
window frame edges and are
measured together with the
areas outside the window frame
edges.
Condition: Labeling
(in order they are
connected)
White
Black
B
0
A
White
Black
0