Very briefly, we can say that the IP camera is an analog camera that was attached to a microcomputer. With IP cameras, processing is done at the camera rather than at the recorder:

  • Image parameters
  • Color settings
  • Video analytics
  • Motion detection
  • Alerts via the Internet
  • Wireless data transmission
  • Remote Access

If IP cameras are used, processing is performed at the camera and only relevant data are transmitted to the recorder. It is a NVR (Network Video Recorder), It also manages users rights and connections.

 

When analog cameras are used, all the above functions are performed by the recorder called DVR (Digital Video Recorder). It captures the images, process them, save them and manages of all other functions.

 

The main advantage of IP cameras is that they are available at higher resolution. Indeed analog cameras connected to DVR will be recorded at a maximum resolution of around 704 x 480 pixels, which is 1/3 megapixel while it is common to find on the market, IP cameras at 1.3, 2, 5 megapixels and more. A 1.3 megapixel image is 400% more accurate than an analog camera, so what about the 2, 3 and 5 megapixels.

 

The challenges surrounding the use of high resolution cameras are about storage space and use of bandwidth.

 

Improvements in technology, of both, computer and network components make implementation of IP cameras more efficient.

 

Electrical power of IP cameras: It is becoming common that IP cameras are powered over the network cable, such cameras feature POE (Power Over Ethernet), they must be connected to a hub that provides the POE. Several characteristics are important when choosing these products.