Secrets of the Opening ceremony of the Beijing Winter Olympics

2022-04-28 0 By

The opening ceremony of the Beijing Winter Olympics, which just concluded on The night of February 4, left a deep impression on the global audience.But behind this magnificent art feast, cannot leave the support of a lot of black technology.For example: snowflake tracking behind 3DAT 3d athlete tracking technology, snowflake torch “and” super screen “display technology.The 3d motion tracking technology behind the snowflake tracking makes the special effects of snow and snow melt seamlessly with athletes wherever they go.Snow and children follow, accompany the children on the stage to move freely…These tacit cooperation, is achieved through 3DAT three-dimensional athlete tracking technology, the technology can let the screen on the ground to make real-time feedback to the actor displacement and present the technical solution of artistic effect.It is reported that this is Intel joint Beijing Film Academy professional team based on Intel’s 3DAT technology for the opening scene of the Winter Olympics customized development of the “large-scale performance real-time special effects system based on AI.”3DAT 3D athlete tracking technology is a set of complex system, it is composed of camera information collection, data analysis, artistic effect rendering three subsystems, its core algorithm is based on computer vision, AI real-time human detection and position tracking technology.The system, which runs on Intel Xeon scalable processors, uses computing power and AI and computer vision algorithms to make the giant LED screen on the ground of the National Stadium “interactive”.To achieve this interaction requires solving two difficult problems. One is to accurately identify and position the actors on stage.Second, the interaction between actors and the system must be “real time”, to be able to present the artistic effect of “tacit cooperation”.To solve these two problems, Intel’s technical team placed four professional cameras on the sixth floor of the grandstand, the farthest from the field, to capture video information covering the entire stadium.Several deep neural network models are designed and developed to efficiently detect and recognize so many actors and output their motion trajectory data in real time.In real time, the data signal collected by the camera will be transmitted to the edge computing system of Intel ® Xeon ® scalable processor installed in the National Stadium by optical fiber.At the same time in the transmission efficiency, based on Intel ® OpenVINO™ visual tool suite development, and then achieve accurate, smooth, real-time video data reading, preprocessing.From the image acquisition recognition, detection and processing, only need tens of milliseconds of time, real time transmission.With the support of 3DAT’s powerful computing power and AI algorithm, it makes it possible to collect and analyze real-time data in a large range, with many people, high precision and low delay.The main torch platform of the opening ceremony has a diameter of 14.89 meters, composed of 96 small snowflake shape and 6 olive branch shape LED double-sided screen ideas, using double-sided hollow design, embedded with more than 550,000 LED lights, each light beads are controlled by a single channel driver chip.The overall hardware and software system of the snowflake torch platform are independently developed and designed by BOE.In order to realize the creative concept of “shining like diamonds”, boe core RESEARCH and development team has developed the 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 sample preparation, which fully presents the line sense and delicate screen display effect of snowflakes.Lit the torch at that moment, a giant snowflakes screen around from the center to radiate, progressive transformation of bright light shines with waves, rapid transformation, behind perfect synchronous display, USES a AIoT boe technology system and the independent research and development of asynchronous compatible with/E-mail system, asynchronous set can control in a very short period of time will be large-scale video content quickly,Synchronous centralized control ensures that 102 double-sided screens realize millisecond response;In addition, the “main road + loop” backup high redundancy control system ensures the high reliability of the torch station broadcast control system.At the same time, LoRa (long distance radio) low delay control system with synchronous playback time correction technology, to further ensure that the command delivery is foolproof, to achieve perfect coordination of video images.Lit the torch at that moment, a giant snowflakes screen around from the center to radiate, progressive transformation of bright light shines with waves, rapid transformation, behind perfect synchronous display, USES a AIoT boe technology system and the independent research and development of asynchronous compatible with/E-mail system, asynchronous set can control in a very short period of time will be large-scale video content quickly,Synchronous centralized control ensures that 102 double-sided screens realize millisecond response;In addition, the “main road + loop” backup high redundancy control system ensures the high reliability of the torch station broadcast control system.At the same time, LoRa (long distance radio) low delay control system with synchronous playback time correction technology, to further ensure that the command delivery is foolproof, to achieve perfect coordination of video images.The stage floor of the opening ceremony is the largest 8K ultra high definition ground display system at present, with a total area of 10,393 square meters. Not only is the area large, but the technology can also be rated as world-class!Boe adopts a number of 8K+ resolution screen fusion technology, super-large optical correction algorithm can carry out pixel level optical correction for each display picture, can present 100000:1 ultra high contrast, 3840Hz ultra high refresh rate, and 29900×15096 ultra high resolution ultra hd gorgeous picture.The effect is equipped with BOE super-scale display module control and synchronization system, which can also capture the actors’ moving track in real time, realizing seamless interaction between the screen and the actors.At the same time, in the 5 months of high intensity rehearsal and the winter of -30 degrees Celsius extreme low temperature rain and snow weather, the ground display system can still achieve stable operation, on the opening day to the world perfectly presents the beauty of the dream realistic science and technology.