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Vision Sensor SBSI/SBSC-EN, 8062650 - 1607b - 13/09/2016
Vision Sensor Manual
Fig. 109: Grey level, application example, negative result
Shiny metal contact is not present in the search area. That means average value of grey values in the
search area is not inside the defined threshold limits. (Not inside grey value 192-255, but rather in range <
50). Result: negative = contact not found.
Aid to determine grey values:
By placing the cursor somewhere in the image the according X- and Y- coordinate and the grey value (“I”
= Intensity) are displayed in the status line on the screen below in the next to last field at the right.
Function detector Grey level.
The authorised grey value range is defined by the two limits on the grey level slider.
All pixels within this grey value range and within the defined working zone (yellow frame) are added
together. The proportion of the number of all the pixels in the working zone (yellow frame) and of the
number of pixels in the authorised grey value range represents the result of this detector.
If this result is within the limits set on the switching threshold slider, the result is positive. The position of
the grey value pixels on the screen is of no importance.
Example:
(when the grey level slider is set to very dark values):
Both images produce exactly the same result with the grey level detector, as in each case 9 of the 25 pixels
are detected as dark.
Fig. 110: Grey level, example 1
Summary of Contents for SBSC-EN
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