IFM O3M150 - Operating Principle; Example of a Signal Noise Reduction

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.