AST Jan 2020 Magazine AST Jan 2020 Magazine | Page 43

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Dynamic masking 
Jan/Feb 2019 - Edition 40
What qualifies as a significant
event?
Unlike static masking intend-
ed for fixed locations, dynamic That depends on the product.
masking applies pixelation to
objects that enter into and out It can be something that’s rec-
ognized in the video feed by a
of the scene.
scene .
machine-trained AI such as a per-
While this is primarily used to son’s unexpected movements
identify and obscure faces,
faces , it within the frame.
can also be applied to other sen-
sitive identifying characteris- It can also be an event tied to
another sensor trigger such as
tics such as license plates.
plates .
detecting someone scaling a pe-
rimeter fence.
fence .
Significant events
Some systems default to a pri- Face recognition
vacy-protected state and only
record video when a significant Facial recognition software can
be used to flag identified fac-
event is detected.
detected .
es (for building entry access) or
This removes the need for op- unidentified faces (for security
erators to be consistently mon- breaches
breaches).
).
itoring cameras as well as any
reliance on the correctness of In either case, recognition of the
operator judgements.
judgements .
individual is similar to dynamic
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