Megapixel IP Cameras Image Quality Advantage By Paul Hennessy – Managing Director, Northwood Technology Ltd. Megapixel IP cameras, when compared to analogue CCTV cameras have significant benefits. In most applications, a megapixel network camera will cover the same area as an analogue CCTV camera with an improved quality of picture for facial recognition. We are all too familiar with images captured from analogue CCTV systems where poor quality meant little could be learned and often no positive identification was possible. Megapixel network cameras can solve this major disadvantage by offering both the situational awareness and detail in a single image.
For other applications, megapixel means covering a much wider area than analogue CCTV cameras. Comparing like for like, a one megapixel network camera can cover more than four times the area of an analogue CCTV camera with the same resolution. This means you could technically replace four CCTV cameras with a single megapixel camera, or 10 analogue CCTV cameras with one 3.1 megapixel camera. Taking a simple example, if you want to cover a 10,000sq ft concourse with facial detail, your choices are: 28 CCTV cameras; seven 1.3 megapixel cameras, three 3.1 megapixel cameras or one 11 megapixel camera. There are clear operational and cost implications with installing and monitoring 28 cameras as against one megapixel camera. Because megapixel can offer such enhanced image quality at a relatively small price differential businesses are embracing this new technology and megapixel CCTV has become the fastest growing area in the industry. There have been misrepresentations that megapixel network cameras cost more than analogue CCTV cameras. The initial cost of a professional quality megapixel network camera may be higher than a traditional CCTV camera however due to the reduced camera count the system price can often be cheaper. The real return on investment with a megapixel system comes from securing ‘evidential quality evidence’ resulting in a greater admission of guilt saving costly legal time. Images can be zoomed in on retrospectively without the deterioration in quality one gets from an analogue system. Advanced High Definition Video Management Software allows megapixel images to be stored, searched, played, exported and transmitted remotely quicker and easier than a conventional analogue system. 10
For Further information please contact: Paul Hennessy, Managing Director Northwood Technology Ltd. 56 Nore Road, Dublin Industrial Estate, Glasnevin, Dublin 11 P:01 8601880 F:01 8601882 E:firstname.lastname@example.org www.northwoodtechnology.ie
Spring 2010 edition of Risk Manager Magazine