Axis Communications Product guide - Manual (Page 35)

Preparing your network video project / TECHNICAL CORNER 35
Main considerations
> Scene: What kind of scene do you want to
monitor? How important is it?
This will help you determine the features you would
like to have in a network camera, such as video
quality, light sensitivity and type of lens.
> Lighting conditions: level of indoor and/or out-
door light sensitivity required.
Axis offers network cameras for indoor use, as well
as models for both indoor/outdoor conditions. In-
door/outdoor cameras have varifocal lens that au-
tomatically adjust the lens‘ iris. Day/night cameras,
which provide color images during daytime and
black and white images during night time are also
available.
Check details on the network camera‘s light sensi-
tivity both in indoor and/or outdoor environments.
Lighting conditions are measured in “lux“.
> Distance from position of camera to object
being monitored.
This determines the type of camera and type of lens
(normal, telephoto, wide-angle) to use, as well as
the placement of the camera(s). Choose Axis net-
work cameras with fixed focal or varifocal lenses,
with or without replaceable lenses, according to the
level of flexibility needed.
> Angle of view needed: wide, narrow, general or
detailed coverage (Determine how much of the
scene you need to see)
.
Network cameras come with fixed angle and focus,
as well as variable ones that allow remote pan/tilt/
zoom capability, which enables a wider area of cov-
erage.
> High or low traffic.
The higher the traffic, the more cameras may be
needed.
PREPARING YOUR NETWORK VIDEO PROJECT
1. Define the scene and type of network video products required
> Assess network use of current LAN: what are you or
the company using it for?
> Assess network use of current WAN links.
> Determine the pattern of congestion levels over a
given period.
> Do you need to add new equipment to the network,
e.g. switches, or use existing infrastructure and
equipment?
> Do you need to subscribe to additional ISPs for
redundancy?
> Do you need to subscribe to additional ISPs for
redundancy?
2. Determine your application needs:
features, recording and storage needs
3. Determine your network needs
(LAN/WAN, wireless)
> Application: Simple remote viewing, intelligent
surveillance system with advanced event manage-
ment, input/output triggers, audio?
> Viewing and recording needs: Determine when
and how often you need to view and record: day,
night and/or weekends? Schedule the needs for
every scene.
> Calculate storage requirements.
> Calculate bandwidth requirements.