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Friday, October 30, 2020

CCTV Definition and Types

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CCTV is an acronym for closed-circuit television. CCTV is a TV system in which the signals are not distributed publicly, but are monitored, mainly for surveillance and security.

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CCTV relies primarily on strategic placement of cameras, and standby observation of the camera’s input on your monitors.

Because the CCTV cameras communicate directly with monitors and/or the video recorders via wireless communication links or private coaxial cable runs, they use the designation “closed-circuit” to make it clear that access to all content is deliberately limited by design only to owners and people able to see it.

For older CCTV systems, small, low-resolution black and white monitors that had no interactive capabilities were used.

However, the displays of modern CCTV can be colored, high-resolution displays and can even have the ability to zoom in on images or also track someone or something among their features.

CCTV is popularly used for a wide range of purposes, and these include:

  1. Maintaining perimeter security in medium- secure to high-secure areas and installations.
  2. Observing the behavior and activities of incarcerated inmates and potentially dangerous patients in hospitals and other medical facilities.
  3. Traffic monitoring.
  4. Overseeing locations that would be hazardous to a human, for instance, highly radioactive or toxic industrial environments.
  5. Building and grounds security.
  6. Obtaining a visual record of activities in cases where it is vital to maintain proper security or access controls (for example, in a diamond cutting or sorting operation; in casinos, banks, or airports).

CCTV is fast finding increased use in law-enforcement, for almost everything from observation of residential communities or high-crime areas, to traffic observation (and automated ticketing).

Different Types of CCTV

In this segment of the article, we run through the different types of CCTV cameras and what makes each one unique and more suitable for some locations over others.

1. Dark Fighter Technology Cameras

These cameras are capable of picking up colored images in low-light conditions. You can use dark fighter technology both in the day and night and enjoy optimal performance thanks to its broad range of capabilities.

These cameras are equipped with ½” CMOS progressive scan sensors that make it possible for the device to pick up high-quality images without needing an additional light source – and that is what makes it the perfect night time security surveillance camera.

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Other benefits of choosing the dark fighter technology cameras include:

  • Can be used for a multitude of purposes
  • Smart features: audio and face detection, line crossing.
  • High definition

2. ANPR/LPR Cameras

The ANPR and LPR cameras are used for reading and storage of data on registration plates. These cameras offer a simple but efficient solution to several organisations, including hotel overstay management, tolling, and the obvious: car parking.

ANRP is an acronym that stands for Automatic Number Plate Recognition, while LPR cameras stand for License plate cameras.

These two devices assist with obtaining copious information in a high traffic environment to keep any premises secure.

Additional benefits of ANPR/LPR cameras include:

  • Can identify cars that have been banned from premises
  • Smart features: information storage
  • Allows a business to run smoothly

3. Internal and External Dome Camera

The dome camera is the most commonly used one for outdoor and indoor security and surveillance.

The camera has a shape that makes it difficult for onlookers to know which direction the camera is facing, which is a fantastic piece of design, as it deters criminals by creating an air of uncertainty.

Other benefits of this type of camera include:

  • Vandal-resistant features
  • Ease of installation
  • IR night vision

4. Bullet Camera

Bullet cameras may be more familiar than the others. These are long and cylindrical and are great for outdoor use.

The strengths of this type of camera lie, especially in applications where long-distance viewing is required. Installed within plastic protective casings, the bullet cameras are protected against dirt, dust, and other natural elements.

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You can easily mount the cameras with a mounting bracket, and they come fitted with either varifocal or fixed lenses, depending on the requirements of its intended use.

Other benefits of bullet cameras include:

  • Compact size aids installation
  • IR night vision
  • High-quality image resolution

5. C-mount Camera

Created with detachable lenses attached, C-mount cameras make room for simple lens changes to suit different applications.

The C-mount cameras can easily cover distances afar as 40 ft because of the possibility to use special lenses with the c-mount cameras, whereas the standard CCTV lenses can not cover distances more than 35-40 ft.

Some other benefits of C-mount cameras include:

  • Effective for indoor use
  • Can support changes in technology
  • The bulky size makes them noticeable (which acts as a deterrent)

6. Day/Night Camera

Day/Night cameras are capable of operating in both standard and poorly lit places.

These cameras benefit significantly from not needing any inbuilt infrared illuminators as they are capable of capturing clear video images in the dark because of their extra sensitive imaging chips.

Because of this, the day/night cameras are great for outdoor surveillance applications where IR cameras cannot function optimally.

Other benefits of day/night cameras include:

  • Wide variety of sizes available
  • Record in both color and black & white.
  • Infrared capability

7. PTZ Pan Tilt & Zoom Camera

PTZ – Pan/tilt/zoom – cameras can be said to be the most flexible as they allow the camera to be moved left or right (panning), and up and down (tilting) even allow the lens to be zoomed closer or farther from objects.

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These cameras are the best in situations where a surveillance specialist or live guard is there operating the security systems.

Other benefits of PTZ cameras include:

  • X36 optical zoom
  • 200m IR night vision
  • High-quality image resolution

8. Discreet CCTV

As the name implies, these types of cameras make careful placement possible, which means you can easily capture great footage of theft and even criminal damage.

The discreet CCTV cameras are beneficial because criminals will be less likely to spot them, and that makes them less likely to get damaged in the process.

Other benefits of discreet CCTV cameras include:

  • Can be disguised in various objects
  • Can be propped up or mounted
  • Effective for indoor use

9. Thermal Image Cameras/Infrared Cameras

The thermal image camera/infrared camera is one of the most used 24-hour surveillance cameras in airports, boards, seaports, and many other critical infrastructures because of its quality images, regardless of the time of day it is.

Infrared cameras posses small LEDs that surround the lens to assist with picking up moving figures in pitch-black nights. Thermal image cameras can capture footages over long distances, up to 300 meters away!

Other benefits of infrared cameras include:

  • Good in low-light
  • Detect intruders up 250-300 meters away
  • Thermal radiation passes through visual barriers

10. Varifocal Cameras

With an ability to zoom images and footage in and out without forfeiting its focus, a Varifocal camera is a good option.

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These cameras allow you to adjust the angle, the focal length easily, and increase or decrease the zoom – perfect for obtaining the content in a square room where you usually would experience a ‘dead zone’ with any other, fixed lens camera.

Other benefits of varifocal cameras include:

  • Offer exceptional focus
  • Can capture those ‘dead zones’ that other cameras can’t
  • Work well up close and at long distances

11. Network Cameras

These types of cameras share the images they capture across the internet, making CCTV footage gathered using them easily accessed.

Network cameras are perfect for both commercial and domestic purposes because you can watch what is going on while away from your property.

Other benefits of network cameras include:

  • Ideal for homes and companies
  • Data can be easily accessed
  • Less cabling and less maintenance

12. High Definition Cameras

The high definition cameras have a really high resolution that they are mainly used in high-risk establishments like casinos and banks.

This is to obtain the right image of everyone who enters and goes out of the premises to maintain high security and the best of safety.

These cameras are lovely for spotting misconduct and makes it possible for the user to zoom in to obtain extra clarity, in case the footage has to be used in court.

Other benefits of high definition cameras include:

  • Offer maximum safety for high-risk establishments
  • Clear, detailed pictures
  • Can zoom in without losing focus

What Type of CCTV Camera Should I Buy?

It’s incredibly vital to make sure that you have selected the right CCTV camera because, depending on where you position them and their focus use, you will need to find one that best suits your needs.

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Let us know what you think by leaving a comment below. Grab your copy at Amazon or click the button below.

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