Camera Surveillance
Camera Surveillance
Security Cameras, Surveillance Systems - Los Angeles, San Diego, Orange County
If you're in the market for an IP-based video surveillance system, you're going to need to know exactly what it is you are looking for, and at. There are a raft of technical terms and the like that you'll have to be aware of. As there is no one definition on what IP-based actually means, let alone other terms like networked or web-based, you are going to encounter as many different explanations as there are salespeople.
At first, video surveillance was all done with analog technologies like CCTV (closed circuit TV), the video being stored on tape. While perfectly adequate for monitoring and recording activity, no broadcast capabilities were present. This made the technology less than ideal for remote surveillance. And of course, tapes involved an inherent time lag. Worse of all, tapes had to be changed on a regular basis, and the quality of captured video tended to be rather poor.
Digital revolutionizes video surveillance
With the advent of the Internet, and increasing prevalence of LANs (Local Area Networks), there was a parallel leap in surveillance technology in the nineties. Analog cameras began to be phased out in favor of digital cameras, the prices of which dropped to within the realm of feasibility for the average person.
With these advances, video surveillance could now be sent out live over the Internet or a local area network. The new digital cameras offered much higher quality, clearer images, which were also far easier to work with. This was a boon to law enforcement in particular.
The basics of IP-based surveillance
In a nutshell, the digital camera “sees” what it is pointed at, and sends the video data over a local area network to a workstation or server. The server or workstation then handles the data. As needed, the data is displayed, recorder or retransmitted to other computers and networks.
There is software available for data analysis, flagging and almost any other data management function you could want. Video surveillance is a more versatile tool than ever thanks to these accompanying advances in software.
Truly IP-based digital surveillance utilizes CCD (digital to you and me) cameras that break up the video data into packets and stream it over the local area network via an Ethernet (Cat 5) cable instead of a coaxial cable. This allows more bandwidth and true TCP/IP capabilities to be dedicated to the video signal.
IP-based surveillance allows better data mining and retrieval, as well as encryption capabilities for your data in the event you need to keep it away from prying eyes and tampering. This is something which analog based surveillance simply cannot offer.
A new development is digital cameras that have built in web servers, meaning no networked computers are required to run the cameras, the video data is sent to the end location for viewing or recording to be played back later. D-Link and Linksys already have offerings on the market already, with many more to follow.
Halfway there
In between the digital and analog worlds is adding a DVR, or digital video recorder to an existing surveillance system. While not IP-based, a DVR system is a step towards such a system. Now, a DVR system may have the same camera and other older analog technologies in place, but stores video on DVR rather than tape. Unfortunately, the poor video quality of the old analog based systems still is a problem here.
If you're looking at surveillance systems, always ask if digital refers to the recording medium or the cameras. Many companies will call a system digital based on the DVR storage alone, while still using analog cameras.
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perior to analog
IP-base recording is highly compressed for easier storage and can be transported over a variety of media
Digital images can be encrypted for security purposes
Updates and add-ons are relatively inexpensive through software packages and Internet computer networking
Adjustable frame rates
Remote or shared viewing may be done over the Internet or a wireless connection
Standard IP video compression techniques are used
IP surveillance cameras may be added individually or in groups according to your needs
If you plan to increase or upgrade video surveillance for your company or home, having a handle on how IP-based video surveillance works will make your decision easier. Video surveillance is headed in this direction; although in the short term it may be a little bit pricier, is an investment in superior quality and flexibility over the long run.
About the Author
Mark Allen is a frequent contributor on the security surveillance camera industry.
Why do most surveillance camera's have such bad quality?
I am quite appalled at the fact that most surveillance camera's have the quality of a 30 year old image. If camera's were better, catching faces of criminals would be much easier. Why do local buildings, and areas invest very little in surveillance? Are they really that cheap?
true true.
Either way, it's still a shame.
It's usually a case if the storage Media. Because owners want to capture as much video as possible and not take up piles of tape or lots of hard drive space, the video is compressed or derogated. The cameras are also usually not the best as far as lens's and the pick up device.
Camera Surveillance
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Using IP Camera Surveillance in Shopping Malls
Copyright (c) 2009 Wes Fernley
A shopping mall presents a nightmare for a security team. Large numbers of people constantly entering and leaving, hundreds of small objects that can easily be pilfered by a nimble-fingered thief, and a wide area of space that needs to be covered by surveillance. For this reason, shopping malls need a surveillance strategy that utilizes the best planning, resources and technology available to protect the safety of goods, staff and customers. IP cameras, also known as network cameras or Internet cameras, represent the latest in surveillance technology, and help to solve the nightmare of shopping mall security.
The Benefits of IP Cameras
An IP camera sends recorded information via the Internet, rather than onto a tape like previous technology. This is a benefit not only in terms of cost and convenience, but also in the protection of the people and objects being watched.
Internet cameras can be totally wireless, allowing easy set-up that takes a matter of minutes rather than days.
Since surveillance video is sent over the Internet, the video server can potentially be accessed from outside the site of business, an advantage not present in previous surveillance systems. This means footage of criminal activity can be instantly sent to authorities, quickly identifying suspects. This also means security teams can keep an eye on the store from anywhere in the world, and do not have to always arrive at a single location in order to keep an eye on surveillance practices.
Amazingly, even control functions can be accessed through the Internet through any pre-designated computer. But even with these capabilities, security personnel can't maintain an eye on each camera twenty-four hours a day. Network cameras cover this problem as well, as they are usually equipped with motion-detector technology as a standard feature. This means the camera will only record when something is moving on-screen, making review of the footage far easier and saving disk space. It can also be arranged that security personnel are notified by email or SMS when movement is taking place in a certain area.
Installing the IP Camera System in Your Store
While the latest technology in surveillance offers many advantages in convenience and safety, a great amount of thought and care still needs to be taken to make sure the cameras in a shopping mall are well laid out, in order to minimize blind spots and target areas with a high risk of criminal activity.
It's most important that cameras cover every entrance and exit of the store, as well as hallways and pathways to and from other businesses. Areas in which high levels of activity take place over a wide area may have to be covered by more than one camera, as criminals may become aware of blind spots in the cameras vision and target these areas.
Having a decent surveillance system is the responsibility of every shopping mall. Instituting technology such as IP cameras isn't just for saving money, it protects customers and staff and allows them to be comfortable with the knowledge of being present in a safe environment.
About the Author
The Vivotek
PT7135
and PT7137 are ideal IP security cameras for shopping malls. They offer high quality video with reliable service. These cameras are available at Network Camera Store.
Camera Surveillance