81
ifm Vision Assistant O3M
UK
10.9.1 Operating principle
The device can calculate average values in two different ways:
● Basic functions (→ „11 2D overlay“)
●
Intelligent data averaging
For the calculation of average values via the basic functions, only the valid pixels in an ROI are used .
For the calculation of average values via the intelligent data averaging, the raw data is used . The raw
data contains valid and invalid pixels . The intelligent data averaging can make invalid pixels valid again .
10.9.2 Example of a signal noise reduction
In the following, you will find an example of how the intelligent data averaging reduces the signal noise .
Example
Description
The device is oriented towards a car park
with cars .
The distances between the device and
cars are indicated by means of the
colours (→ „6 Monitoring window“):
●
1st row of cars in red
●
2nd row of cars in yellow
●
3rd row of cars in blue
Monitoring screen
Calculation of the average value with low
sensitivity:
Monitoring screen
Calculation of the average value with high
sensitivity:
Result:
The signal noise is significantly reduced .
