Vision Sensor SBSI/SBSC-EN, 8062650 - 1607b - 13/09/2016
Page 117
Vision Sensor Manual
If the threshold value was set to 10 in this example, the following images would produce a positive result.
Fig. 111: Grey level, example 2
4.6.3.7 Brightness detector
Next topic:
Brightness application (Page 118)
This detector determines the average value of the grey values in the search area. With the two limit
sliders of the parameter „Threshold“ the valid range of the brightness mean value is defined.
As soon as the calculated average value is within these two limits the result is positive. The result value is
standardized to %. The position of the bright or dark pixels is not relevant. If there are position deviations
from check to check the alignment function must be used.
Settings in tab Brightness:
Parameters Functions
Brightness
min/max
Range of grey values that are to be accepted
Search region
Shape of search region can be set as Rectangle, Circle or Free shape. In mode Free shape
“Edit search region” is active.
Edit search
region
With Edit search region there can be masked out parts of the search area. The parts
which are not relevant for this examination can be painted out like using an eraser.
Masks can also be inverted, means that parts which are interesting can be marked. S. also
chap.
Overlay
search region
On- / Off of display of edited search region.
For newly generated detectors, all parameters are preset as standard values, suitable for many
applications.
4.6.3.7.1 Color channel
Selection of color model and color components for the grey image used by the detector.
The display of the image depends on the image chip and the selected detector.
A image, taken with a colour chip contains more information by the colour component than a
monochrome image. This feature can be used with the colour channel selection with monochrome
detectors also. By selection of the colour channels the composition of the grey image can be manipulated
and so specific zones can be intensified or weakend.
- Monochrome chip: Display always greyscale
Summary of Contents for SBSC-EN
Page 1: ......