American Dynamics Hybrid Digital Video Recorder, Руководство пользователя

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The Smooth Begin and Smooth End slider controls are used to reduce undesirable motion
recording artifacts. The Smooth Begin slider control requires a minimum amount of time
specified in fraction of a second from zero (0) to two (2) before the system begins to record
motion video. The default is
. 25 second, which means the system will begin recording motion
video only after it has acquired .25 second of motion. This will reduce short duration motion
events like the blinking light of a laser bar code scanner in a dark room from triggering motion
recording. Another example is placing a camera pointed at a lobby entrance with a window or
glass door that has a road visible in the distant background. While the camera was placed to
monitor and record people entering the lobby it also picks up moving cars through the window
and glass door passing in the background. The cars pass quickly through the cameras field of
view setting off unwanted motion recording. By increasing the Smooth Begin setting to .5 the
car motion is not detected or recorded.
The Smooth End slider control specifies that amount of time in seconds from zero (0) to two (2)
that the system will continue recording motion video after an object ends moving. This Smooth
End slider control smoothes out motion recording when a person or object momentarily stop
moving and prevents the system from recording choppy segments of video.
A motion mask will also reduce unwanted recording by eliminating motion events in certain
areas of an image. For example, if a camera is pointed at a room that has a moving ceiling fan
in the field of view you can eliminate continuous motion recording by masking out the fan.
When someone walks into the room area not masked out in the cameras field of view the
system will record video based on the motion. By creating motion masks you not only save
storage space that will extend your recording time, you also make it easier to visually see
motion events depicted as blue bars when you search for video. You can create a motion
masks in a variety of patterns to suit your needs. To create a motion mask, complete the
following steps:
If you haven’t already done so, click on the Edit button: