AXIS Network
Video Surveillance System memiliki banyak kelebihan dan memberikan
banyak fungsi yang tidak dimiliki oleh Analog Video Surveillance System.
Kelebihannya termasuk akses secara remote, kulaitas gambar superior,
event management and kemampuan intelligent video, sangat mudah
diiintegration dengan system lain.
- Akses secara remote
- High Image Quality
- Event Management and Intelligent Video
- Future-proof integration
- Skalabel dan fleksibel
- Cost-Effectiveness
Remote accessibility
Network
cameras and video encoders can be configured and accessed remotely,
enabling multiple, authorized users to view live and recorded video at
any time and from virtually any networked location in the world. This is
advantageous if users would like a third-party company, such as a
security firm, to also gain access to the video. In a traditional analog
CCTV system, users would need to be at a specific, on-site monitoring
location to view and manage video, and off-site video access would not
be possible without such equipment as a video encoder or a network
digital video recorder (DVR). A DVR is the digital replacement for the
video cassette recorder.
High image quality
In
a video surveillance application, high image quality is essential to be
able to clearly capture an incident in progress and identify persons or
objects involved. With progressive scan and megapixel technologies, a
network camera can deliver better image quality and higher resolution
than an analog CCTV camera.
Image
quality can also be more easily retained in a network video system than
in an analog surveillance system. With analog systems today that use a
DVR as the recording medium, many analog-to-digital conversions take
place: first, analog signals are converted in the camera to digital and
then back to analog for transportation; then the analog signals are
digitized for recording. Captured images are degraded with every
conversion between analog and digital formats and with the cabling
distance. The further the analog video signals have to travel, the
weaker they become.
In a fully
digital IP-Surveillance system, images from a network camera are
digitized once and they stay digital with no unnecessary conversions and
no image degradation due to distance traveled over a network. In
addition, digital images can be more easily stored and retrieved than in
cases where analog video tapes are used.
Event management and intelligent video
There
is often too much video recorded and lack of time to properly analyze
them. Advanced network cameras and video encoders with built-in
intelligence or analytics take care of this problem by reducing the
amount of uninteresting recordings and enabling programmed responses.
Such functionalities are not available in an analog system.
Axis
network cameras and video encoders have built-in features such as video
motion detection, audio detection alarm, active tampering alarm, I/O
(input/output) connections, and alarm and event management
functionalities. These features enable the network cameras and video
encoders to constantly analyze inputs to detect an event and to
automatically respond to an event with actions such as video recording
and sending alarm notifications.
 |
Event
management functionalities can be configured using the network video
product’s user interface or a video management software program. Users
can define the alarms or events by setting the type of triggers to be
used and when. Responses can also be configured (e.g., recording to one
or multiple sites, whether local and/or off-site for security purposes;
activation of external devices such as alarms, lights and doors; and
sending notification messages to users).
Easy, future-proof integration
Network
video products based on open standards can be easily integrated with
computer and Ethernet-based information systems, audio or security
systems and other digital devices, in addition to video management and
application software. For instance, video from a network camera can be
integrated into a Point of Sales system or a building management system.
Scalability and flexibility
A
network video system can grow with a user’s needs. IP-based systems
provide a means for many network cameras and video encoders, as well as
other types of applications, to share the same wired or wireless network
for communicating data; so any number of network video products can be
added to the system without significant or costly changes to the network
infrastructure. This is not the case with an analog system. In an
analog video system, a dedicated coaxial cable must run directly from
each camera to a viewing/recording station. Separate audio cables must
also be used if audio is required. Network video products can also be
placed and networked from virtually any location, and the system can be
as open or as closed as desired.
Cost-effectiveness
An
IP-Surveillance system typically has a lower total cost of ownership
than a traditional analog CCTV system. An IP network infrastructure is
often already in place and used for other applications within an
organization, so a network video application can piggyback off the
existing infrastructure. IP-based networks and wireless options are also
much less expensive alternatives than traditional coaxial and fiber
cabling for an analog CCTV system. In addition, digital video streams
can be routed around the world using a variety of interoperable
infrastructure. Management and equipment costs are also lower since
back-end applications and storage run on industry standard, open
systems-based servers, not on proprietary hardware such as a DVR in the
case of an analog CCTV system.
Furthermore, Power over Ethernet
technology, which cannot be applied in an analog video system, can be
used in a network video system. PoE enables networked devices to receive
power from a PoE-enabled switch or midspan through the same Ethernet
cable that transports data (video). PoE provides substantial savings in
installation costs and can increase the reliability of the system. More
on Power over Ethernet. |
