2014 can be said to be the first year of H.265. HiSilie launched the first H.265 encoding chip 3516A. With the birth of this inter-generational chip, the high definition and low bandwidth necessary for the HD era have been realized." Take it to the next level." From the birth of H.264 to this year, there have been ten years. In this decade, H.264 has made great contributions to the development and popularization of high-definition, thus realizing the situation of "unification of rivers and lakes".
At present, almost all network codes on the market are based on H.264 encoding, but as the resolution requirements continue to increase, the network of larger channels and the surge of storage space make the encoding compression of H.264 more and more Hard to cope. Based on this, H.265 was adopted by the ITU (ITU) in January 2013 as the next-generation HD standard, and by providing more different tools to reduce the bit rate, under the same bandwidth conditions, H.265 will be The picture quality has increased by 50%, bringing new changes to the entire security industry. H.264 has ruled the past ten years, and the next five or even ten years will be led by H.265, opening a new era of security.
If H.265 brings unprecedented opportunities to HD IPC, then the related products of the back end also ushered in an opportunity, access bandwidth is larger, storage capacity is stronger, and rich intelligent analysis functions. Speaking of intelligent analysis, I have to say the chip 3536 of the H.265 backend. This is a codec chip that Hais launched for H.265. Let's take a look at the main parameters of this new product: the industry's first professional H.265/HEVC Ultra HD video surveillance storage and display product processor Hi3536. The Hi3536 processor uses HiSilicon's high-performance video codec to decode up to 16 1080P H.265/HEVC video streams or 4 4K H.265/HEVC video streams in real time, supporting video at 4K@60 frames. Rate display, or support up to 9 channels of 1080P@30 frame HD display output. At the same time, Hi3536 flexible high-performance 4-core ARM Cortex-A17 processor (1.6 times the performance of the same frequency Cortex-A9 processor), clocked at up to 1.6GHz, while integrating an ARM top-level GPU - Mali T720, support The customer realizes a variety of perfect UI and intelligent related auxiliary function design, and cooperates with HiSilicon's own second generation intelligent analysis co-processing unit IVE2.0 to provide up to 40 kinds of intelligent analysis such as license plate, perimeter and face recognition. application. The Hi3536 integrates up to four SATA 3.0 interfaces to meet ultra-high-definition storage requirements while supporting dual GMACs with network speeds of up to 640 Mbit/s.
In addition to improving the access and decoding capabilities of the previous 3535, it is more important that the intelligent analysis has been greatly improved compared to before, which makes the intelligent analysis more accurate and more comprehensive. Tiandi Weiye has launched a heavyweight product for its current monitoring needs for intelligent analytics: Intelligent Analyzer. The intelligent analyzer detects the abnormal events appearing in the monitoring screen by real-time analysis of the video captured by the surveillance camera, triggers an instant alarm, and makes the camera in the user's existing video surveillance system "smart".
As the entire society pays more attention to the safety of life and property, more and more video surveillance systems are installed and used. These video surveillance systems not only include applications in general buildings, enterprise security, etc., but also in many fields such as defense, social security, and traffic management.
Not only are there more and more video surveillance systems installed and used, but the number of surveillance cameras deployed in each video surveillance system has also increased dramatically. A large number of surveillance cameras bring a lot of convenience to ensure social security and strengthen enterprise management. However, how to use the surveillance camera's shooting images reasonably and effectively is also the design and maintenance of security systems, as well as the daily use of these systems. There are more and more challenges.
In the video surveillance system widely used today, the surveillance camera screen is usually directly recorded by the hard disk recorder (DVR/NVR) for later viewing, and abnormal events in the monitoring screen cannot be detected in real time. In some video surveillance systems, the surveillance images of some cameras are displayed through devices such as video walls, and the security guards visually observe the images in real time, hoping to find abnormal events in the surveillance screen. However, scientific experiments have found that in the face of numerous surveillance images from cameras, no matter how responsible security guards, they can't keep enough attention for a long time to discover all the anomalies in the picture. Programme designers and users of video surveillance systems urgently need to be able to work continuously 24 hours a day, without attention, unable to concentrate problems, and never tire of "security guards."
Tiandi Weiye's intelligent video analysis technology uses a unique technology with independent intellectual property rights to help improve monitoring efficiency through real-time analysis of audio and video surveillance content. Different from the traditional video motion detection technology, the advanced moving object detection and tracking technology (VOT, Video Object Tracking) can analyze the moving targets in the picture instead of all the picture changes, so that the light and shadow in the monitoring picture can be filtered out. Changes in non-essential content such as leaves, tides, etc., focus on abnormal events that the user actually cares about, and reduce false positives.
Through the real-time analysis of the monitoring screen in the video monitoring system, according to the behavior characteristics of the moving target in the monitoring screen and the judgment rules set by the user, it is determined whether an abnormal event has occurred in the screen. When an abnormal event occurs, not only the target tracking track and the prominent alarm display can be superimposed in the real-time video, but also the instant alarm information can be output or the linkage alarm can be realized according to the communication protocol through the TCP/IP network port and the RS485 serial port, and the IO output external terminal The external sound and light alarm can also be used for alarm to remind the security guards to pay attention to the current picture. The rich alarm interface enables the device to seamlessly access any form of video surveillance system, enabling the ordinary video surveillance system to be quickly upgraded to the intelligent monitoring with intelligent analysis and automatic alarm function in the shortest time in the simplest way. Alarm security system.
The intelligent analyzer can not only access analog video, but also access HD/SD network video. The specific access methods are as follows:
1. Analog video input, analog video output. Applicable to the analog monitoring scheme, the front-end analog camera or the ball-and-cloud platform is connected to the video analyzer. The video analyzer performs superimposition of the corresponding video analysis function on the image according to the need, and the video or analog output after the superimposed analysis function can be connected to the matrix. The main control device such as DVR and monitor has alarm input and alarm linkage output.
2, analog video input, digital video output. Suitable for analog-to-digital hybrid monitoring solutions, front-end analog cameras or ball-and-cloud stations are connected to the video analyzer. The video analyzer has an encoding function. The analog video and video analysis functions can be H.264 encoded and output IP, and can be connected to the NVR. , IPSAN and other devices, can decode digital video through the network video decoder to restore analog video, connect the display device, the restored video has video analysis function, with alarm input and alarm linkage output.
3, digital video input, digital video output. Applicable to the all-digital monitoring scheme, the front-end HD or SD camera or the ball-and-cloud camera is connected to the video analyzer. The video analyzer performs the superimposition of the corresponding video analysis function on the image according to the needs. The video after the overlay analysis function adopts the same input as the input. Video resolution output, can be connected to NVR, IPSAN and other devices, can decode digital video through HD or SD network video decoder to restore high/standard definition video, connect display device, restore video with video analysis function, with alarm input and Alarm linkage output.
Tiandi Weiye Intelligent Analyzer is flexible and convenient to install. It adopts industrial grade design and can withstand the temperature environment of -35 °C ~ 70 °C, whether it is placed in the front end or the central computer room according to the actual needs of the site. If the hardware is already very prominent, then the intelligent analysis function is even more distinctive.
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