On-Net Surveillance Systems, Inc.
NetDVMS 6.5e
Administration
33
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Noise Sensitivity
Noise is insignificant changes in individual pixels which should not be regarded as motion.
The
Noise Sensitivity
slider determines how much each pixel must change before it is regarded as motion.
Insignificant changes, which should not be regarded as motion, are considered acceptable noise, hence the
name of the slider.
With a high noise sensitivity, very little change in a pixel is required before it is regarded as motion.
Areas in which motion is detected are highlighted in the preview image. Select a slider position in which only
detections you consider motion are highlighted.
As an alternative to using the slider, you may specify a value between 0 and 256 in the field next to the slider
to control the noise sensitivity setting.
Tip:
If you find the concept of noise sensitivity difficult to grasp, try dragging the slider to the left towards
the
High
position: The more you drag the slider towards the
High
position, the more of the preview image
becomes highlighted. This is because with a high noise sensitivity even the slightest change in a pixel will be
regarded as motion.
•
Motion Sensitivity
The
Motion Sensitivity
slider determines how many pixels must change in the image before it is regarded as
motion.
The selected motion sensitivity level is indicated by the black vertical line in the motion level indication bar below the
preview image. The black vertical line serves as a threshold: When detected motion is above the selected sensitivity level,
the bar changes color from green to red, indicating a positive detection.
As an alternative to using the slider, you may specify a value between 0 and 10,000 in the field next to the slider to control
the motion sensitivity setting.
