LanguageEnglish Deutsch Français Español Italiano Русский Português
Axis megapixel/HDTV network cameras - When every detail matters

Axis megapixel/HDTV network cameras

axisFlexSubBanner
Fixed cameras Fixed domes PTZ cameras PTZ domes
 
Megapixel/HDTV cameras Thermal cameras Outdoor cameras

 

The increased image resolution in megapixel/HDTV network cameras offer a number of benefits compared to other solutions.

When every detail matters

With a megapixel or HDTV network camera, the resolution is at least three times better than an analog CCTV camera.

It boils down to a simple truth: Megapixel and HDTV means higher resolution. Higher resolution means more detail. More detail means better possibilities for identification.
 

 

Same number of cameras –
more coverage

Another argument in favor of megapixel and HDTV 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 a 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.

The trade-off

While megapixel and HDTV network cameras provide clear benefits in terms of image resolution, it is important to be aware that there are some potential drawbacks with current megapixel technology. For manufacturing and cost reasons, many megapixel sensors are the same size, or only slightly larger, than sensors with less resolution.

This means that each pixel is smaller in a megapixel network camera, which means that a megapixel network camera is normally less light sensitive than a non-megapixel network camera. Another factor to consider is that higher resolution video streams increase demands on network bandwidth and storage space for recorded video – although this can be mitigated by using MPEG-4 or H.264 compression.

axisFlexSubContent
Axis is the world’s leading expert in network video
 |  Privacy Statement
 |  Sites
 |  Contact
Glossary