IP Surveillance Systems
Network Video Recorder (NVR)
A Network video recorder (NVR) is a device used for integrating the IP cameras for recording /capturing the video data from the IP cameras into the HDD in the digital form. The NVR does not have dedicated video capture hardware instead gets the input from the network interface. In the NVR the video is encoded and processed at the IP camera end and then the streaming happens to the NVR for recording /remote viewing thereby making the NVR an integral part of the IP video surveillance system.
Features /specs:
Operating system – Embedded OS
Video input – Through the network interface
Video output – VGA /HDMI interface for local configuration
Recording resolution – Ranges start from QCIF/4CIF / Megapixel
Search function – Recorded files search function based on various parameters available
No of HDD’s support – Varies by the need and model ,Raid arrays are also availble
HDD capacity – Varies model to model
Video parameters – Can be configured as per the recording requirement and space optimization
Interfaces – various interfaces like USB/RJ45/RS485/RS 232 are available
Remote access – Remote access of the DVR through LAN and WAN possible
Web server – Web server is in built for remote access/configuration using web browser
Application and usage:
A Network Video Recorders (NVR) are an integral part of IP surveillance system, enables you to smartly unify, co-ordinate and manage your network monitoring camera network. It has multiple-level applications at enterprise, business, corporate and residential complex.
Video management Software (VMS )
Video management software runs on a windows/Linux/MAC system, enabling the various video recording, analyzing and monitoring functionalities. The VMS software is designed to receive multiple streams from various camera units. It has the ability to record, catalog, streaming the received network-data.
Features :
· Automatic Simultaneous viewing and recording facility
· Manage different Recording modes including continuous, motion detect /alarm etc.
· Access Remotely through Network or Internet
· Alarm Management functions
· Meet the high frame rate for speed dome and other high-value camera’s
· Access through Mobile through specific apps
· Various Video functions such as Pop-up video window, Sound effect
· Event display window, Automatic audio output, Change active channel etc…
Application and usage:
The VMS system provides the network camera with a centralized co-ordination and coverage. All these makes the VMS software’s extensively used in medium to large corporate offices, corporate spaces, commercial places, showrooms etc…
Video Analytics
The Video Analytics software is software that analyses the video from the IP cameras in real time on the basis of the conditions /rules set for analysis and raises alerts /alarms as per the rule configuration. The Video analytics software stores the details of the analysis along with the video so that the occurrence of any incident can be traced based on the rule and any deviations of the rules can be easily identified thereby making the whole surveillance system easy and independent of continuous human monitoring without missing any critical information. Video analytics is normally integrated into the VMS or comes as separate third party software which can be linked to the VMS. Nowadays some IP cameras also comes with in-built video analytics capability.
Features :
· Identify patterns and trends enabling a quick response
· Options to set rules based on which the video is analyzed and alerts/Alarm raised
· Helps easy identification of suspicious objects
· Enables advanced Functionality of the existing security network
· Software is remotely configurable.
· Can generate alerts as voice, visual email,etc.,
Application and usage:
Video Analytics mainly preferred /used by security officers, and corporate managers, to make practical and effective use of their surveillance systems. This makes Video Analytics software’s an indispensable part of corporate environment, large commercial ecosystem and even large residential complexes. Usage of Video Analytics to automatically monitor cameras and alert for events of interest is more effective than a human operator who is less alert than the software.
Advantages of IP security cameras:
Better video quality: IP cameras are much higher resolution and produce better quality footage. They also offer digital and optical zoom, giving more usable and meaningful footage. IP-based surveillance system provides clarity and depth that coax cameras simply cannot compete with in live monitoring, recording, and playback. IP cameras can be purchased with resolutions up to 7k/30MP.
Requires less wiring: IP cameras only need to be wired to a network switch or wireless network which will transfer the signals to the NVR. This way you can install more cameras without being limited by the number of ports available on your digital video recorder (DVR). Less cabling is also required because IP cameras are powered through a Power Over Ethernet (PoE) capable network switch which removes the need for a separate power source.
Cover Longer distance: IP systems can cover longer distances because cameras do not need to be wired to a DVR.
Advanced video analytics capabilities: higher resolution capability gives IP cameras the edge over analog cameras for facial recognition, license plate tracking, unusual motion detection and other benefits of video analytics. Deep learning and artificial intelligence cameras are hitting the market and they are only available in IP cameras.
Flexibility and scalability: IP cameras offer more expandability and scalability than analogue cameras because their cabling requirements are less complex. That is why industrial surveillance cameras mostly include IP options.
Disadvantages of an IP security camera system:
Higher cost: The cameras and NVR tend to cost more compared to their analog counterparts.
High Bandwidth Requirements: IP security camera systems usually require a lot more bandwidth because they transfer video footage over the network, instead of via cables like an analog system.
Larger Storage Requirements: Higher resolution and higher frame rates mean larger files, so you’ll need a lot more storage space on your hard drive to accommodate them.
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