Published on 18 October, 2010
|Analogue camera resolution compared to HDTV/megapixel network camera resolution|
The increased image resolution in HDTV / megapixel network cameras offer a number of benefits compared to other solutions according to Axis Communications. Some of the key benefits of megapixel network cameras are listed below.
When every detail matters: 3x better resolution with a megapixel network camera
With a HDTV or megapixel network camera, the resolution is at least three times better than an analogue CCTV camera.
It boils down to a simple truth: HDTV and megapixel means higher resolution. Higher resolution means more detail. More detail means 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.
Same number of surveillance cameras - more coverage
Another argument in favour of HDTV and megapixel network cameras is that they can cover larger scenes than non-megapixel network cameras at a given number of pixels per area.
For example, if four non-megapixel network cameras provide good coverage of your monitored scene, one 2.0 megapixel network camera will cover an even larger area, with no loss of image resolution.
Different aspect ratios for more efficient surveillance
Network video enables images to be delivered in different aspect ratios, which is especially advantageous in combination with the high resolution, that megapixel network cameras offer. In a conventional TV monitor, an aspect ratio of 4:3 is provided. Network video can offer the same ratio, in addition to others, such as 16:9. For HDTV network cameras specifically, to comply with the SMPTE (Society of Motion Picture and Television Engineers) HDTV standards, the cameras are required to deliver 16:9 aspect ratio in full frame rate 30/25.
The advantage of 16:9 aspect ratio is that unimportant details, usually located in the upper and lower part of a conventional-sized image, are not present and do not take up bandwidth and storage space.
|See an example of the resolution and clarity offered by a HDTV / megapixel network camera|