High-definition vs megapixel

CCTV Handbook 2012 CCTV, Surveillance & Remote Monitoring

High-definition (HD) cameras are the best suited for today’s video surveillance needs. That said, we must remember that all HD cameras are megapixel (MP), but not all megapixel cameras are HD. The biggest difference between a megapixel camera and the high-definition cameras is that HD images use the 16:9 widescreen aspect ratio and megapixel produces images in a 4:3 aspect ratio.

HDTV provides a higher resolution and higher resolution translates into more detail, which in turn leads to better possibilities for identification. In addition, a true HDTV network camera provides full frame rate and extended colour fidelity, for an even better viewing experience.

To reiterate, all HD cameras are megapixel, but not all megapixel cameras are HD, and good quality, easy installation, and ease of use will set HD apart from standard analogue and MP systems.

Roy Alves
Roy Alves

Benefits of HD cameras in different sectors

Retail

In retail, theft and shrinkage can be drastically reduced through effective video surveillance. HDTV network cameras have an important role to play, for example by giving an overview – without any blind spots – of shops and stores.

City surveillance

HDTV network cameras are typically used in city surveillance situations to provide high-resolution video streams from locations where there is a need to be able to clearly identify people and objects, or get a larger overview.

High security premises

Casinos and airports, together with passport controls, banks and similar high security premises, are areas where the requirements on the surveillance cameras often include high image quality and detail as well as full frame rate, making HDTV network cameras the natural choice.

Transportation

Security and safety for both passengers and staff are highly prioritised issues for public transportation authorities around the world. HDTV cameras at stations, terminals and airports as well as onboard buses and trains, provide valid evidence in the event of criminal incidents.



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