Security cameras are handy devices that watch over your security perimeters. Shrinking form factor, faster image and video-processing capabilities, inbuilt graphic processors, features such as access control, analytics engine, intrusion detection, night vision and wireless connectivity, help these cameras to provide round-the clock surveillance.
The term ‘security camera’ is often associated with surveillance cameras. Surveillance cameras are passive in nature, which means that their objectives are to observe and record the events in their field-of-view.
Security cameras, on the other hand, are active, which means that these are capable of sending out messages or alerts to concerned people in case of unexpected events in their field-of-view.
Types of cameras
Security cameras can be divided into two types: digital and analogue. Digital—Internet Protocol (IP)—variants send encoded video signals to a network video recorder (NVR) through IP. Whereas analogue cameras direct the video signals to a recorder.
Today, IP cameras are preferred as these provide better resolution, whereas analogue systems often buff up resolutions and the bulky old television lines often have connectivity problems. These are also hard to track and repair.
IP cameras use Power over Ethernet (PoE), so one single cable does the job of handling power and video signals.
Then, there are some video cameras that have artificial intelligence and deep learning based platforms inbuilt, complete with additional graphic processing and storage. Equipped with better resolution and robust technology, these can give up to 4K resolution, crystal-clear video, and are apt for computer vision based security systems to observe and learn while conveniently integrating themselves with analytical platforms. The security system over the IP can be used to take a look at your property from anywhere in the world through any suitable device connected over the Internet.
Choosing the right one
An intelligent security system should be able to send out a message or alert in real time, in case there is a burglary or theft in your premises.
This story is from the February 2017 edition of Electronics For You.
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This story is from the February 2017 edition of Electronics For You.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 8,500+ magazines and newspapers.
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