Section 15 Sudden Scene Change Detection; Section 16 Defocus Detection - NEC NRS Expanded Series Configuration Manual

ISSUE 1.0
6.
S 15 S
ECTION UDDEN
The scene change detection function detects the change of surveillance environment
affected by the external factors; such as the intentional rotation of the camera. When
the alarm is triggered, certain actions can be taken.
Refer to
scene change detection.
The Sensitivity in the Rule settings ranges from 1 to 100, and the higher the value,
the more easily the change of scene can trigger the alarm.
S 16 D
ECTION EFOCUS
The image blur caused by defocus of the lens can be detected and some certain
actions can be taken when the alarm is triggered.
Refer to
defocus detection.
The Sensitivity in the Rule Settings ranges from 1 to 100 and the higher the value,
the more easily the change of scene can trigger the alarm.
9-12
5a. Check the Audio Input Exception checkbox to enable the audio loss detection
function.
5b. Check the Sudden Increase of Sound Intensity Detection checkbox to detect
the sound steep rise in the surveillance scene. You can set the detection
sensitivity and threshold for sound steep rise.
Sensitivity: Range [1-100] The smaller the value, the more severe the change
should be to trigger the detection.
Sound Intensity Threshold: Range [1-100] It filters the sound in the
environment; the louder the environment sound, the higher the value should be
set. You can adjust it according to the real environment.
5c. Check the Sudden Decrease of Sound Intensity Detection checkbox to detect
the sound steep drop in the surveillance scene. You can set the detection
sensitivity[1-100] for sound steep drop.
Click Apply to activate the settings.
S C
CENE HANGE
Section 3 Face Detection on page 9-2
D
ETECTION
Section 3 Face Detection on page 9-2
D
ETECTION
for operating steps to configure the
for operating steps to configure the
VCA Alarm