Core Thing (Public Number: aichip001) Author | Edited by Yang Chang | Heart edge
Core East February 5 news, last night, the opening ceremony of the 2022 Beijing Winter Olympics was successfully held, in this spring season, to the people of the world to offer an unparalleled visual feast.
Zhang Yimou, the general director of the opening ceremony of the Beijing Winter Olympics, used 4 words to describe tonight's opening ceremony as "ethereal, romantic, modern and technological". According to him, the opening ceremony and ignition of the Beijing Winter Olympics are the story of snowflakes, and completely different snowflakes converge in Beijing to become a human snowflake.
The opening ceremony of the Beijing Winter Olympics used digital performance and simulation technology throughout the whole process, simulated and presented in the virtual bird's nest (national stadium), and finally landed in the real world, and through the comprehensive use of artificial intelligence, 5G, AR, naked-eye 3D and cloud and other scientific and technological achievements, the effect of "few people is not empty, ethereal and romantic".
This is also the world's first large-scale application of 8K technology to broadcast the opening ceremony and report on key events, which will unite with the 5G network to present an immersive ice and snow visual feast in an all-round way.
In addition, the entire Bird's Nest super large ground screen for the first time to achieve full LED image, to replace the traditional ground screen projection, the picture quality reached 16K. In the high-intensity rehearsal of up to 5 months and the extremely low temperature rain and snow weather of minus 30 degrees Celsius in winter, the ground display system can still achieve stable operation, perfectly presenting the world with the beauty of fantastic and realistic technology.
First, the combination of virtual and real, the ice cube broke the ice into the five Olympic rings
The opening ceremony of this Winter Olympics strives to be simple, safe and wonderful. The opening ceremony lasted nearly two hours and involved about 3,000 people, far less than the 15,000 at the 2008 Beijing Olympics.
In the hot session before the opening ceremony, Shenzhen showed a number of scientific and technological shows. Its 100,000 lumens laser projectile light projected various groups, lighting up the night sky of Shenzhen, and then the 2022 drone team slowly rose, showing the snowflakes in the sky, through the matrix combination transformation, forming the "ice pier" and "snow Rongrong" two Winter Olympic mascots.
At the same time, the lights of Shenzhen's urban buildings changed, forming a naked-eye 3D visual effect. Finally, the intelligent robot of the Winter Olympics was dressed in 56 national costumes, waving the Winter Olympic flag, and some also transformed into ski skaters to warm up for the opening ceremony of the Winter Olympics.
Hangzhou's four-legged robot "Fuhu" danced "enthusiastically" in a queue of "Winter Olympics", integrating scientific and technological elements with a celebratory atmosphere.
At 20:04, the ingenious countdown to the 24 solar terms returned to zero, and the opening ceremony of the Beijing Winter Olympics officially began at the Bird's Nest.
The first opening ceremony program represented the Spring Festival with a green performance, the performers wore green clothes to form a phalanx, waving green long branches, with special effects such as lighting, simulating the vigorous growth of grass, indicating the recovery of all things and vitality.
Slowly, the green branches turn white, combined with the ground screen to "change" a dandelion.
Then, the silhouette of a little boy appeared on the left side of the screen on the ground, only to see him breathe a breath, and the virtual dandelion seed flew into the night sky, transforming into brilliant fireworks and sprinkling the earth.
After the national flag entry and the national anthem session, on the vertical screen of the scene, a drop of ice-blue ink fell from the sky, which transformed into the water of the Yellow River and poured down, and the whole venue was rushing with the water of the Yellow River.
This vertical screen is a nearly 60-meter-high and 20-meter-wide LED screen called "IceFall". To erect such a large screen on the flat ground, a big test is the wind, the wind speed in the field in autumn and winter is enough to tear the screen apart, so the technical team recorded one or two hundred wind conditions to overcome this technical problem.
The stage ground of the opening ceremony is currently the largest 8K ultra-high-definition ground display system, the overall area of 10393 square meters, BOE using a plurality of 8K+ resolution of the picture fusion technology, ultra-large-scale optical correction algorithm can be pixel-level light correction of each display screen, can present 1000000:1 ultra-high contrast, 3840Hz ultra-high refresh rate, and 29900 ×15096 ultra-high resolution ultra-high resolution ultra-high resolution gorgeous picture.
The waters of the vigorous Yellow River slowly freeze, and then a huge nearly 3-story cube of ice (ice cube) appears, and the symbols of the previous Winter Olympics are carved out one by one with laser carving knives.
The last thing that appears is the name of the Beijing Winter Olympics, when six ice hockey players appear and swing their hockey clubs to hit the virtual ice ball towards the ice cube.
As the virtual ice ball hit back and forth, the ice cube began to shatter, and a crystal clear ice ring broke through the ice. This ice and snow ring is equipped with batteries inside, all of which are powered internally.
Breaking the ice means breaking down barriers, getting closer to each other, and everyone becoming one.
The ice cube breaks the ice, but only for 43 seconds. But behind this performance that combines virtual and real, it is inseparable from the day and night struggle of more than 200 people and more than 700 days of hundreds of simulation experiments.
The ice cube with a total weight of 400 tons and a lifting weight of 180 tons is about 120 times the weight of a small car. In this 84m x 42m x 10m foundation pit, the lifting load to be achieved exceeds 8 times that of the large lifting platform of the general theater, which is the driving equipment with the maximum power of the entire opening and closing ceremonies.
The Long March Tianmin development team, which is responsible for the stage of the opening ceremony of the Winter Olympics, under the condition of limited venues, drives 4 sets of synchronous transmission units composed of 16 chains and 16 steel wire ropes by precisely controlling the motor, so that the lifting and positioning accuracy of the ice cube is controlled at ±1mm.
The Long March Tianmin special team explained that in the design process, the design team reduced the physical production cost in the design process of the five-ring display environment by using three-dimensional virtual design, performance visual effect rendering comparison, semi-physical simulation technology, etc.
The stunning appearance of the five Olympic rings is also inseparable from the support of aerospace technology. It is reported that the structural characteristics of the five rings are special-shaped, large-span and low stiffness, and their design is similar to that of rocket development. Therefore, with reference to some methods of aerospace structure design, the Long March Tianmin takes the aluminum alloy truss structure as the skeleton, the LED display as the clothing, and the diffuser plate as the coat, so that the five rings are as strong and light as the rocket's arrow body.
The designers use a dual-screen heterosexual splicing LED programmable display device, and do a good job of display backup, power supply and broadcast control system are also two sets, to ensure the achievements of the Olympic five rings display.
Second, the first visual technology! More than 600 ai real-time motion capture interaction
Each country or region's representative team has a snowflake-shaped guide card when entering, and after the Chinese team enters, the guides gather together with snowflake guide cards, at which time the virtual snowflakes also begin to appear.
As the action of the guide changes, nearly a hundred virtual snowflakes with the names of various countries (regions) began to gather together, and the olive branch changed the small snowflakes into large snowflakes, and the large snowflakes flew freely in the nest, and a virtual earth slowly appeared.
The virtual snowflake slowly disappears A large snowflake form of the main torch stand slowly rises, this main torch platform has a diameter of 14.89 meters, composed of 96 small snowflake shapes and 6 olive branch shape LED double-sided screens, on which more than 550,000 LED lamp beads are embedded, each LED lamp bead is independently controlled by a single channel driving the chip.
In order to realize the creative concept that the torch stand of the director group should be like "shining like a diamond", the core R&D team of BOE has developed the narrowest single-pixel controllable special-shaped display product with the narrowest luminous surface in the industry through more than 500 design drawings and nearly 10 rounds of samples, fully presenting the line sense of snowflakes and the delicate picture display effect.
In the song of "Let the World Be Full of Love", dozens of young people from all over the world walk side by side, and wherever they walk, an image of a long river follows the speed of walking in real time.
Four groups of skiers then slid out of the waves on the field, and the Olympic motto "faster, taller, stronger, more united" gradually appeared on the long skating trajectory. Through the ultra-large-scale display module control and synchronization system independently developed by BOE, the ground can capture the actor's trajectory in real time.
In the following "Snowflakes" program, more than 600 children waved peace dove lanterns and sang in unison, making the snowflakes under each child's feet look like shadows. This is the world's first collective real-time artificial intelligence motion capture and rendering of more than 600 people.
Behind this is the support of Intel 3DAT computer vision motion capture technology, Beijing Film Academy Sound School teacher and student team AI real-time video special effects and other technical work, with advanced AI algorithms, the technical team only through 4 cameras to cover the whole scene, to achieve real-time interaction between actors and live large screens.
But the more difficult is how to shorten the reflection time from data collection to screen feedback, the research team has targeted optimization of the algorithm according to the site environment of the bird's nest itself, in addition to optimizing the pattern generated by the art rendering and the trigger method of the pattern, so that the audience can see the visual effect more flexibly.
Finally, the most exciting ignition ceremony has arrived!
After a number of national team athletes took turns to pass, cross-country skier Yi Lamujiang and Nordic biathlete Zhao Jiawen together planted the last torch in the center of the big snowflake torch platform.
This torch that continues to burn in the center of the big snowflake is our main torch!
The moment the torch is lit, the giant snowflake screen radiates from the center to the surroundings. Behind the rapid transformation and perfect synchronization of the display screen, is the BOE AIoT technology system and the self-developed same/asynchronous compatible letter and transmission system, asynchronous centralized control can quickly distribute large-scale video content in a very short period of time, synchronous centralized control to ensure that 102 double-sided screens to achieve millisecond response. In addition, the highly redundant control system backed up by "main road + loop" ensures the ultra-high reliability of the flare station broadcast control system.
At the same time, the use of LoRa (long-range radio) low-latency control system and synchronous playback time correction technology further ensures perfect video picture coordination.
Although the fire is small, it is eternal and long, and it is endless. Big snowflakes slowly rise, carrying the Olympic fire, flying over the bird's nest!
Third, China's cutting-edge science and technology continue to appear in the Olympic Games
At the same time as the opening ceremony of the Beijing Winter Olympics, multiple 8K ultra-high-definition screens on the streets of Beijing outside the Bird's Nest are also broadcasting the opening of the Beijing Winter Olympics in real time.
In fact, the most important project to ensure the smooth completion of this wonderful opening ceremony is the intelligent transformation of the "Bird's Nest", through the construction of the digital model of the Bird's Nest, dynamically collect the operation of the equipment, the flow of people, and the environmental situation, and then build a digital twin of the Bird's Nest based on artificial intelligence.
The construction of a virtual bird's nest not only solves the problems in the performance, in fact, in the performance creation stage, simulation technology has played an important role, such as the opening ceremony of the first program "Li Chun", how to let nearly 400 actors at the same time wielding glowing sticks without interfering with each other is a problem, and these are through the digital twin simulation technology to simulate the actual effect, and then achieve.
Looking back at the "Beijing 8 Minutes" cultural performance at the closing ceremony of the 2018 Pyeongchang Winter Olympics, we can also see the context of the continuous development of Chinese science and technology.
At the closing ceremony of the Pyeongchang Winter Olympics, "Beijing 8 Minutes" actually used LEDs, robots, AR and other technologies.
In "Beijing 8 Minutes", there is a nearly transparent LED screen "Ice Screen" to achieve transparent image display, achieving a more transparent and flexible effect, the naked eye looks snowflakes white, ice flowers transparent; there are 24 mobile robots through their own action choreography, to achieve linkage performance with live actors, ground projection.
"Beijing 8 Minutes" also has two panda puppets that flexibly skate performances, the exterior is equipped with external cameras and gimbals, and the internal actors wear augmented reality smart glasses, so that the actors can observe the external environment indiscriminately inside the giant panda props, and complete the prescribed actions perfectly and smoothly.
Conclusion: Behind the Winter Olympics, China's intelligent technology is taking off
On February 4, 2022, the fourth day of the first lunar month, the spring season, the 2022 Beijing Winter Olympic Games officially opened.
At the opening ceremony of the Beijing Winter Olympics and the preparation and operation of the entire event, we saw that various digital technologies such as artificial intelligence, cloud computing, and digital twin technology have been applied on a large scale.
This Olympic event, which will surely be recorded in the annals of history, is burning the Olympic flame of eternal brightness, with the scientific and technological power behind it to show the style of a big country belonging to China, "together to the future".