Undoubtedly, new wave of 4K UHD technology changes home electronics industry, since Sony,Samsung, Skyworth, TCL, Konka etc manufacturers launched 4K UHD Television, 4K UHD offers superior image quality, attract a large number of home appliances consumers. In global video surveillance industry, not only many reputable manufacturers launched 4K related products, 4K also gradually forms a complete product chain, has a great possibility to replace 720p and 1080p products. With the rapid development of digital video surveillance technology, the cost of hardware and software gradually decreased, 4K will become popolar within 2 years.
According to Moore's Law, processor speeds, or overall processing power for computers will double every two years. This also fits security field, video surveillance goes through analog, digital, standard definition, high definition four phrases, will inevitably move to higher definition, ultra high definition development, like the recently emerged 4K, even the future 8K, video surveillance industry develops to ultra HD is an inevitable trend.
4K UHD resolution is 3840*2160, 16:9 video aspect ratio, under this standard CMOS progressive scan can reach 2160P. 4K UHD network cameras utilize higher performance hardware platform, incorporated with 12 megapixel ultra HD CMOS image sensor, resolution can reach 3840x2160 pixels, which is 4 times higher than 1080P, and 9 times higher than 720p, meanwhile with true color reproduction, highly detailed image quality etc features.
Obviously, compared with 720p, 1080p, 4K has advantages on resolution, can have a large area covered, additionally capture details in monitored scene. However, higher resolution requires larger network bandwidth to transmit, one frame 4K UHD image equals 4 frames 1080p or 8 frame 720p images. Typically, one set 1080p network camera requires minimum 2M-4M network bandwidth, while a 4K network image transmission needs above 10M network bandwidth, to wide view angle traffic monitoring application, image contains many moving objects, sometimes the required bandwidth may exceed 20M, greatly increased transmission burden.
On one hand, the current 4K UHD network camera merely can capture ultra high definition video, the capabilities of transmission, decoding, storing still lag behind. Until today, despite 4K UHD has significant benefits, it still can't widely and smoothly used in video surveillance application like the 1080p and 720p. On the other hand, current 4K UHD network cameras have poor performance on the aspect of low light and dynamic range. Therefore, 4K UHD network cameras can deliver excellent images at day, but low illumination performance is poor at night, currently still can not completely adapt 24 hours monitoring. Besides, The equipped lens for the 4K UHD network camera must support 8 megapixel, which can effectively achieve 4K performance, there are not many 8MP lenses available in the market.
Previously, we wrote some product test reports of 4K UHD network cameras:
4K UHD network camera is suitable for large area surveillance, a 4K UHD network camera can have train station plaza covered, meanwhile the captured image can basically recognize face. Secondly, if having the same field of view, 4K UHD provides much better details such as face, car plate license number etc, these details are very important in real video surveillance application.— Mr.Chou, Marketing manager, KEDACOM
4K UHD will become the future standard in video surveillance. However, 4K UHD doesn't merely mean the improvement of resolution, it also greatly expanded the security cameras potential applications, thus promoting the overall transformation of the security and surveillance applications, the Sony 4K UHD network cameras can cover larger monitoring area, raise awareness, to ensure that no detail missed in the monitoring scene. Many Chinese users expressed interest to our SNC-VM772R network camera, this product will let users enjoy true value of 4K UHD imaging brings, become a milestone change the market rules of the game.— Qi Xiaobo, Product Manager, Sony Asia Professional
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