ifm Vision Assistant O3M
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The filtered pixels are invalid (pixel properties set to 0) and cannot be used for applications .
The "signal quality filter" additionally filters noisy pixels with medium and high sensitivity . Do not
use the "noise reduction filter" simultaneously since otherwise too many invalid pixels will be
filtered .
10.4 Noise reduction filter
The "Noise reduction filter" filters pixels with excessive noise . The filter estimates the noise level and the
errors that are caused by movements that are too fast .
Depending on the setting, weak, medium or strong noise is filtered . The higher the filter is set, the lower is
the decision threshold of the filter .
Test the ideal filter setting under difficult conditions:
●
strong sunlight
●
wet surfaces
Do not use the noise reduction filter for the following applications:
●
counting a specific number of valid pixels,
●
following the movement of an object's edges .
The filters "intelligent data averaging" and "noise reduction filter" can be used simultaneously with
the following settings:
●
Noise reduction filter set to "weak" or "off"
● Intelligent data averaging set to "high" (→ „10.9 Intelligent data averaging“)