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The top four aspects of high resolution for IP video surveillance

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Moxa presents the next generation of high definition IP surveillance solutions designed to deliver HD quality images for industrial video surveillance applications in extreme outdoor environments.

The term ‘high definition’ has been in use since the 1930s in the HDTV industry; however, the precise meaning has changed considerably over the years.

The resolution of analogue cameras and DVR systems used in the CCTV industry for the past three decades was based on D1 or 4CIF used in the TV industry. The early 1990s saw consumer products such as digital cameras and handheld DV recorders going through a resolution evolution with the resolution jumping from 1 megapixel (1280 x 1024) to over 10 megapixels in just one decade. This trend influenced early IP CCTV camera development as well as the development of CMOS technology, with manufacturers promoting IP cameras with higher and higher resolution, resulting in a resolution war in the industry.

However, thanks to the popularity of flat screen televisions and HD 720P/ Full HD 1080P resolution, CCTV users have realised using IP cameras that provide resolution comparable to their display device (HD 720P/ Full HD 1080P flat screen TV) is enough. Consequently, HD 720P and Full HD 1080P IP cameras have become the mainstream in the IP CCTV industry.

Given that higher resolution IP CCTV systems place a much bigger demand on bandwidth than lower resolution systems, people have realised that HD 720P and Full HD 1080P resolution strike an acceptable balance between the desire to achieve higher resolution and the load the higher resolution places on network bandwidth.

Benefits of HDTV for IP video surveillance

After years of development, the current HDTV resolutions of HD 720P and Full HD 1080P have become the mainstream for IP CCTV cameras, and provide the following advantages compared to legacy analogue systems or higher megapixel resolutions.

Better clarity compared to legacy analogue systems

Legacy systems provide up to D1 resolution, which is only 1/3 of HD 720P and 1/6 of Full HD 1080P. Consequently, with an HD IP camera users can see three times the clarity and image detail of a legacy analogue CCTV camera.

Moderate bandwidth usage compared to higher megapixel resolution

HD 720P is approximately 1 megapixel whereas Full HD 1080P is approximately 2 megapixels, with both resolutions requiring moderate bandwidth for smooth video streaming compared to higher megapixel resolution IP cameras.

Synchronised with international TV standards

HDTV is the prevailing TV standard worldwide; using IP cameras that support the same resolution guarantees that the user can get the most out of their camera and display monitor.

16:9 aspect ratio

Megapixel systems have a 16:10 aspect ratio whereas HDTV has a 16:9 aspect ratio; consequently IP cameras with HDTV resolution will ensure the fidelity of the video display.

Moxa’s next generation of HD IP surveillance cameras

Moxa’s IP surveillance solutions deliver HD (720p/1080p) image quality with low latency and bandwidth optimisation for industrial video surveillance applications in extreme outdoor environments. Designed for a wide range of harsh weather conditions, Moxa’s new generation of extreme-weather IP cameras can perform reliably from -40°C to +75°C without the need for a fan or heater, and offers advanced features such as WDR (wide dynamic range), sense up, and 3DNR (3D digital noise reduction) to enhance image quality for applications in areas with low visibility. Moxa’s 1080P 10x zoom IP camera can see the finest details with crisp, clear images.

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