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What is the most classic aftertaste left by the highly anticipated opening ceremony of the Beijing Winter Olympics? The answer to this question naturally requires all the “sparkling” elements: floor screens, big snowflakes, five rings, doves of peace, ice waterfalls… And behind these new visual technologies that shine with the light of the future, all are “LED” technology credits.
Big snowflake, China Indoor LED Display innovative control technology
The unprecedented “snowflake” shape of the main torch stage is a “special screen” body with LED lighting and display spacing as a whole. It is also one of the most romantic creative designs of Winter Olympics technology.
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It is reported that the main torch platform of the opening ceremony has a diameter of 14.89 meters and is composed of 96 small snowflakes and 6 olive branch-shaped LED double-sided screens. It adopts a double-sided hollow design and is embedded with more than 550,000 LED lamp beads. These 550,000 lamp beads not only ensure the double-sided “shiny” of the big snowflake but also can realize the “visual” change display: for example when the main torch is inserted into the center base of the big snowflake, the giant snowflake screen radiates and shines from the center to the surrounding. Out of the wave-like layers of progressive rays of light.
The display control of this “brightness wave” not only needs to achieve rapid transformation but also needs to be perfectly synchronized between the 96 small snowflakes and in step with the large screen display behind it. That is, how to control the “synchronization” and “immediacy” displayed by this big snowflake is the biggest problem. ——The 96 small snowflakes that make up the big snowflake were previously applied independently and “flew” in the entire performance venue. This determines that traditional wired control technology cannot be used, but wireless signal technology must be used.
The application of asynchronous distribution and control systems in the large display screen to achieve a high synchronization effect is the real work behind the large snowflake China Indoor LED Display technology. Industry insiders said that this innovation may broaden the “possible” application scope of China Indoor LED Display in a creative light and shadow effects, and promote the market development of China Indoor LED Display special scenes.
30K large screens, the strongest “floor”
At the opening ceremony of the Winter Olympics, the ground screen display system with an area of 10,393 square meters may be the largest ground display product for human beings at present. From the definition index, it has reached 29900×15096 ultra-high resolution, that is, a super-resolution of nearly 30K, rather than a simple 8K ultra-high-definition. This is bound to bring a whole new set of control problems!
For example, from the perspective of current image quality processing technology, finished ICs in the industry can only adapt to 8K-level resolution processing. For a 30K large-screen system, a complex multi-level distributed signal transmission and processing system are necessary. Similar problems also occurred in the early days of 4K TVs and 8K color TVs: that is, there is no suitable high-resolution IC, and the problem can only be solved by using multiple chips and processing circuits to work together. For the 8K LCD TVs sold, there are also some signal processing solutions that use 4 4K ICs.
However, unlike the scene where TV products have a “limited total area”, the ground of the Bird’s Nest is huge. The 10,393-square-meter ground screen system ensures “image quality synchronization” which is the biggest difficulty for multi-processors to work together. At the same time, unlike most 8K content on the market, which is 30HZ standard, the digital video content of the opening ceremony has reached a high standard of 16K resolution and 50 frames per second in terms of production standards, which further improves the synchronization signal of the ground screen system. Handling thresholds. It can be said that in this Winter Olympics, the Bird’s Nest floor screen system has refreshed the upper limit of the industry’s technical difficulty in terms of the super large screen, ultra-high-definition high-quality signal processing, and integrated splicing display, and also verified the “top” of the national large-screen signal processing system. strength.
Of course, as a special display system, the difficulty of the Bird’s Nest floor screen lies not only in signal processing but also in the “LED screen” itself. First of all, there are hundreds or thousands of people dancing and rollerblading on this screen; the ultimate single-point impact may be as high as hundreds of pounds. This places unprecedented requirements on the physical reliability and mechanical strength of the screen itself. Secondly, in the outdoor winter environment, the LED floor screen system must be able to adapt to a variety of possibilities, such as low-temperature environments, self-heating work, and low-sweating performance of actors. It needs to maintain the sealing ability in multiple dimensions and adapt to more severe temperature changes. condition.
In short, it is the ultimate test! Industry experts pointed out that this bird’s nest floor screen is the “top of Mount Everest” in the China Indoor LED Display industry in any technical dimension, representing the highest level of the global industry.
LED penetration is infinite, shining every moment
At the opening of the Winter Olympics, in addition to the obvious LED applications such as snowflake screens, floor screens, and ice waterfalls, the huge five rings, the dove of peace in the hands of children, and the large live broadcast screens in various venues are all excellent “LED” technology. application.
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For example, the five rings of ice crystal with a length of 19 meters, a height of 8.75 meters, and a thickness of only 35 cm are designed, produced, debugged, and guaranteed by Beijing Liangchen Guangqi Digital Technology Co., Ltd. The “transparent” effect is supported by Ledman Optoelectronics and its subsidiary Kangshuozhan.
The body of the five rings is a 360-degree circular LED heterogeneous screen with a full display and no dead ends! “This is a special splicing application. It is formed by splicing two curved screens on the front and back. The “back electrical system” of the display unit is enclosed inside the display surface, forming a “one-piece” full display Surface. This application requires unprecedented breakthroughs in product design, manufacturing, testing, and signal control, representing a new realm of LED heterogeneous display applications.
LED technology is ubiquitous in the Winter Olympics! “Not only displays but also a large number of environmentally friendly lighting are the results of LED technological innovation. In the eyes of industry insiders, it is the rapid progress of LED technology that makes the Winter Olympics “icing on the cake”.
Real-time AI rendering, enabling new audio-visual value
In addition to the product application innovation of LED itself, at the opening ceremony of the Beijing Winter Olympics, industry insiders also paid attention to a special point: real-time rendering interactive innovation.
At the opening ceremony, hundreds of children ran freely on the stage holding models of doves of peace, stepping on snowflakes under their feet; four teams of roller skating teams also set off a scene of snowflakes flying on the ground screen… These changes How is it achieved, and how does it accurately match the actions of the characters? The traditional way is to make a good background display video, and the performers strictly follow the established route and time point to “stop”.
This traditional method is not impossible, but the performance on the 10,000-square-meter stage of the Bird’s Nest floor screen determines the limited accuracy of personnel training or requires a lot of advanced rehearsal. And this kind of mechanical picture and the performance of the personnel will also lose the “smartness” of the performance. The opening performance of the Winter Olympics adopted a brand-new solution: instead of the performers and artists moving with the screen on the ground, the screen on the ground followed the changes of the performers – AI real-time recognition and rendering interactive technology.
It is reported that the real-time capture and interaction system of the opening ceremony of the Winter Olympics can capture the real-time position, posture, and predict the direction of movement of the actors, and render the corresponding art effects, which are presented at the feet of the performers in real-time. The difficulty of this system lies in the “real-time large-scale character capture”, “high-speed, low-latency rendering calculation, and real-time distribution of content to the screen” realized by machine vision.
In this regard, Intel provided the 3DAT three-athlete tracking technology for the opening performance of the Winter Olympics, and the “AI-based real-time special effects system for large-scale performances” customized for the opening ceremony scene. These technologies all run on the server equipped with the third-generation Zhiqiang scalable processor, the detection delay is only 10ms, and the output delay is only 46ms, which can ensure that the rendering output of the picture and the position and action of the actors are synchronized.
AI real-time video special effects” provide a new direction and feasibility for “interactive audio-visual” applications, and it is also one of the important components of Metaverse and MR application technology. Industry experts believe that the opening performance of the Winter Olympics and the success of this technology can provide an inspiration point for much cultural tourism, exhibition, education, training, and other industries, and expand the upgrade space of the interactive audio-visual industry.
On the whole, the Winter Olympics is not only a “sports feast”, but also a “visual” feast. It is a top-level explosion of various visual technologies and provides an example for many future innovative visual applications. Among them, the heavy responsibility of LED technology is particularly eye-catching, and it also represents the industry trend of rapid progress and development of China’s Indoor LED Display technology. It is believed that at the opening ceremony of the Winter Olympics, LED audio-visual technology, the most beautiful boy, will only be more “beyond imagination” in the future innovation space.
