HD or Megapixel IP cameras

Date: 09/05/2014 - View(s): 3245 times

HD or megapixel network cameras provide higher resolution of video images than analog CCTV, i.e. the ability to see more details or have a wider coverage – a key consideration in video surveillance applications. With an HDTV or megapixel network camera, the resolution is at least three times better than an analog CCTV camera.

HD or megapixel network cameras have an important role to play in video surveillance applications. They can provide images that are more useful, with more image detail and with wider coverage than standard resolution cameras.

The variation of requirements within video surveillance is enormous. However, it can be boiled down to a choice between two different priorities:

  1. General overview

In this case, the aim is to obtain a general overview of a scene. In a shopping mall, for instance, your primary goal of a camera installation may be to watch for the presence of people and view their movements—not the identification of individuals. Or you may want to see whether a parking lot is full or has empty spaces, rather than identify individual cars or read license plates. For overview applications, sufficient resolution and coverage of a scene may be achieved with a single HD or megapixel network camera or a number of non-megapixel network cameras.

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  1. High detail

These are the demanding situations where you need to be able to identify persons or objects in a scene. This could be point-of-sales monitoring where it is necessary to clearly see every item a customer is purchasing, or situations where you need to be able to identify a face. High detail images can be achieved by installing a network camera with a telescopic lens or a lens with zoom capability to enable a closer view of the area of interest, or by placing the camera close to the area to be monitored. Using a HD or megapixel network camera in all such cases will provide even higher resolution images with more details than a non-megapixel network camera.

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