© 2003 Michael J Archer
v1.1
- 20 -
Chapter 2 –Configuration
2.5 Motion
detection
From the main display, select the configuration Icon
now select the
Figure 7
The Leviathan DVR is a motion based recording system. This means that only when it detects a change
in a cameras image will it record the data.
Although you may think I need 24hour recording. In the world of computers data and storage are a
premium.
So if you think about this, if a image stays the same from frame to the next, there is no need to store
two copies of the same image, all you need to do is say,” just use the last image as it’s the same”.
This is basically what the Leviathan software does, all be it in a computer data structure.
Additional to this image information storage, the Leviathan only stores information which has changed
from one frame to the next frame. This increases the storage capacity of the system.
There are a few bonuses to this smaller data set or as it is called in the system as
VideoDatabase
. One
being that playback of imagery is processed quicker. And because of a smaller amount of data required
to rebuild the movement of a frame when you have remote clients, the data sent is much smaller than
would otherwise be needed. So higher frame rates are achieved, with small data streams.
You can think of this much like many of Internet based video streaming system. However the
Leviathan system is totally propriety.
The camera Motion detection setting is used to enable the system to prevent the recording activation by
creating a masked area. The default is no mask is set for any camera.
The mask creation is created using simple mouse drawing of boxes. When you select the Draw the
mouse changes to a box icon
when you place over the camera window.
Intelligent Security & Fire Ltd
