4K HD appears security opportunities and challenges coexist

According to HIS research, the global security industry's ultra-high definition (4 megapixels or more) market will grow more than five times by 2018, and 4K will take the majority advantage with its unique advantages. Before the beginning of the network HD era, the analog monitoring system we installed was basically standard definition PAL, with an aspect ratio of 4:3, close to the square. This is also the format of the previous DVD movie, which requires about 1Mbps of bandwidth. Can only meet some basic image display requirements, can not meet the requirements of attention to detail. The emergence of 4K HD has brought new development opportunities for security.

From the development of resolution, it has only been a few years since the emergence of 1080P resolution. Moreover, before 1080P has not been fully popularized, 4K resolution has surpassed 1080P as the hot topic of discussion. It can be said that the concept of 4K resolution has been deeply rooted in the hearts of the people. The power of 4K lies in: Now you can use it to capture the rich visual depth of life in an unprecedented way.

The security industry is a typical big data industry. With the wave of ultra-high-definition surveillance such as high-definition and even 4K, more and more massive video data has been generated. According to statistics, it is estimated that the camera shipments will reach 54.54 million units by 2015. Only video surveillance video has a daily amount of data of thousands of petabytes, and the accumulated historical data will be even larger. After the front-end HD and intelligence of the security industry, the next round of technology demand will come from the back-end and platform.

Big data and cloud computing put forward higher requirements for the back-end research and development capabilities, such as massive data storage, query, node load balancing, backup disaster recovery, etc., which are urgently needed to be solved. Driven by the high-definition video surveillance and large-scale networking, the video surveillance system has entered the era of data blowout, and the demand for data storage and data analysis is very prominent. Cloud storage is a cloud computing system with data storage and management as its core. The emergence of high-definition video surveillance storage cloud breaks the shackles of traditional storage mode.

So, what kind of opportunities does the emergence of 4K bring to the security industry? The biggest and most intuitive core value of 4K HD is that the image is clearer and the details are richer, so that more customer needs can be created. Then, for security vendors, it means more market opportunities and a new revenue or a new revenue. It is the growth point of profit, because the competition of 1 million or 2 million pixel network HD cameras in the security market at this stage has become more and more popular, and there is a trend of gradual commercialization.

The market opportunity brought by 4K is obvious, because for most domestic customers, higher resolution is always eye-catching and makes people want to stop. But if you calm down and think carefully about the next 4K HD monitor from the front-end to the back-end global system, you find that the 4K HD camera is good, but this only exists in the front-end stream capture, a complete ultra-high-definition video surveillance system. It is bound to include the code stream bandwidth, code stream transmission, code stream management and code stream presentation after code stream acquisition, so the opportunities brought by 4K Ultra HD monitoring are not as beautiful as they seem.

1. Higher resolution lens: As a 4K & TImes; 2K IPC product matching lens needs at least 8 million resolution, in order to fully exert the effect of 4K camera, the lens that really achieves more than 8 million resolution is rare and costly, suitable for The security application's support for the zoom movement lens is even rarer.

2. Higher network transmission bandwidth and larger storage capacity: In security applications, 1080P HD H.264 code stream is generally transmitted, which requires about 4Mbps bandwidth. Under H.264 encoding, 4K resolution is required at least. A bandwidth of 12 Mbps or higher can achieve better image quality. Similarly, high-bandwidth video places higher demands on storage space.

3. In terms of code stream transmission, it is necessary to consider whether there is a way to reduce the bandwidth of the code stream while ensuring 4K image quality, or to reduce the code stream bandwidth in some transmission links or links. For the former coping style, it seems that the application of H.265 is a better choice, but the H.265 coding technology is still relatively new, the degree of marketization is relatively low, and the related hardware and software costs are relatively high, and It also requires a lot of research and development and manpower to develop and test.

Although the 4K surveillance product line is still in its infancy, with the development of technology and user experience, it is really unknown who can occupy the commanding heights in the future.