At the opening ceremony of the Beijing Winter Olympic Games, a large number of high technologies were adopted, including 8K Ultra HD technology, naked eye 3D visual effect, led solution, motion capture interactive system, etc., which brought a visual feast to the audience. What are the suppliers behind these technologies?

On February 4, 2022, the opening ceremony of the Beijing Winter Olympic Games was grandly held in the "bird's nest (National Stadium)" at the beginning of the spring of China's solar term. Hundreds of millions of spectators around the world once again witnessed the Chinese Olympic concept through live broadcasting.

At the opening ceremony of the Beijing Winter Olympic Games, a large number of high technologies were adopted, including 8K Ultra HD technology, naked eye 3D visual effect, led solution, motion capture interactive system, etc., which brought a visual feast to the audience. What are the suppliers behind these technologies?

Command and monitoring system

The supplier of the command and monitoring system for the opening ceremony of the Winter Olympic Games is Aerospace Science and technology group, which involves 11 projects, including ground stage (including flagpole equipment), Weiya, torch, ice cube (including five rings), command and monitoring, communication system, ground display system, ice waterfall, command center, CCTV video broadcasting, VR and video rendering room. The command and monitoring system is composed of the general system and subsystems. Relying on the long march cloud platform developed by Aerospace Science and technology group, it connects tens of thousands of screens to monitor the working status of the screen in real time, such as temperature, humidity and voltage, so as to provide accurate instructions for field directors, stage directors and technical support personnel.

Led ground screen

There is a huge lifting platform in the center of the opening ceremony stage, and many creative performances such as snowflake platform and torch are completed on the central lifting platform. The ground screen display (8K UHD ground display system) on the stage supports 100000:1 contrast, 3840hz refresh rate and 29900x15096 resolution. The ground screen is composed of 46504 50 cm square unit boxes, with a total area of 11626 ㎡. The screen suppliers include lyade, Zhouming technology and BOE. It is reported that these LED screens have a layer of special masks, which help to present the hazy feeling of ice and make the load-bearing exceed 500kg / ㎡.

The 3dat processor can not only capture the actor's motion in real time, but also display the interactive effect of the actor's motion in real time, which can be attached to the Intel dat system.

According to the person in charge of Intel 3dat project, two sets of one group and two groups of cameras are deployed at the opening ceremony of the bird's nest. These cameras can capture the signals in the field in real time, transmit the images of the actors back to the computer room, and extract the positions of the actors in the field through computer vision and AI algorithm. For the Beijing Winter Olympics project, Intel and a third-party team customized and developed the "performance real-time special effects system based on artificial intelligence technology". The system is developed on Intel openvino visual tool suite, which can realize accurate, smooth and real-time video data reading and processing.

Ice cube, ice five rings

I believe you are deeply impressed by the ice breaking out of the five rings of the opening ceremony. According to the suppliers participating in this link, the vision of "ice breaking out of the five rings of the Olympic Games" is generated by the combination of laser and "ice cube" 3D visual effect. In fact, the "ice five rings" were hidden inside the "ice cube" before the performance. During the performance, when the laser shone on the "ice cube" to do the "carving" action, the "ice five rings" inside the ice cube rose slowly. At the same time, the "ice cube" composed of LED screen plays the 3D visual effect of broken ice while falling into the interior of the stage. Light and shadow art and LED technology cooperate with each other to form a realistic visual effect of five rings breaking through the ice.

The "ice five rings", 19 meters long, 8.75 meters high and 35 cm thick, are supplied by kangshuozhan, a subsidiary of Lehman optoelectronics. The interior of the "ice five rings" is composed of 360 ° led special-shaped screen, and the outermost layer is covered with a diffusion plate to make the visual effect of the internal display softer and clearer. "Ice five ring" can switch between dual broadcast control and dual power supply system without delay. It adopts aerospace quality control and risk control standards and millimeter precision control. Among them, the ice cube is supplied by Riad.

Ice waterfall

The ice waterfall is perpendicular to the ground screen. It is an LED screen nearly 60 meters high and 20 meters wide. During the opening ceremony, the combination of ice waterfall and ground screen presented the visual scene of "the water of the Yellow River comes up from the sky". According to the staff, liad provided nearly 11000 square meters of display screen for the Beijing Winter Olympic Games, including 7000 square meters of ground screen in the core area of the stage, a large video display device "ice waterfall" with a height of 60 meters, a "ice cube" with a length of 22 meters, a width of 7 meters and a height of 10 meters, and North-South grandstand screens.

Snowflake torch platform

The diameter of the snowflake shaped main torch platform is 14.89m. It is composed of 96 led double-sided screens in the form of small snowflakes (the guide boards of 96 participating delegations in this winter Olympic Games) and 6 LED double-sided screens in the form of olive branches. The system is embedded with more than 550000 LED light beads. The single channel of the driving chip independently controls each light bead, and the width of the light emitting surface of the hollowed out snowflake is controlled at 4.8mm.

When the Olympic flame is lit, the snowflake screen emits light from the center to all around, and the display screen changes rapidly and is synchronized in real time. It is understood that this effect is based on BOE aiot technology and the self-developed synchronous / asynchronous compatible messaging system. The asynchronous centralized control controls the distribution of video materials in a very short time, and the synchronous centralized control ensures that the response of 102 double-sided screens reaches the millisecond level. The highly redundant control system of "main circuit + loop" backup ensures the high reliability of the broadcast control system of the torch station, Through Lora low delay control system + synchronous playback time correction technology, ensure the issuance of instructions and realize the perfect coordination of video images.