◎ science and Technology Daily reporter Jiao Yang
The Beijing Winter Olympics will close on the 20th. During the event, a number of high-tech display means and a variety of smart presentations made participants feel more gorgeous, smarter and more convenient. The specific application of the key R & D plan of the Ministry of science and technology “smart presentation of snow venues and R & D and application demonstration of advanced display technology” (hereinafter referred to as “snow smart project”) is one of them.
“Relevant achievements have successfully developed and deployed the ‘three games and one village’ in Zhangjiakou competition area.”. Project leader, Xia Xinxing, an associate research fellow at Shanghai Univer, said that the smart brain is the IBMS system, the large-scale scene AR navigation system, the desktop suspension light field 3D display system and the panchromatic laser projection display system. p align=”center”>
IBMS system: “three fields and one village” intelligent brain
There are a large number of participants in the “three games and one village” in Zhangjiakou competition area. How to ensure the safe and smooth progress of the competition?
The special customization of snow wisdom has developed a smart brain, that is, the integrated management platform system of snow venue intelligent building (IBMS). “Connect all front-end systems to the Internet of things platform to build a digital twin venue park with holographic simulation, dynamic monitoring and real-time diagnosis for the competition area. Present the venue situation such as the basic environment, facilities and equipment, personnel and abnormal events in the venue at multiple levels and angles.” Xia Xinxing said.
IBMS makes the “three games and one village” into a “smart Winter Olympic Park”, which realizes the viewing of business information such as buildings, floors, objects and roads in the twin scene, and the visual presentation of public data including equipment, pipe network and other data.
As the first line of defense for security, the video monitoring system integrated by IBMS can timely find unsafe factors and assist in handling emergencies. In the low temperature environment below 20 ℃, it can also create a safe competition environment for the Winter Olympic Games
ar navigation: help athletes “play” Zhangjiakou Winter Olympic Village
Every athlete who has played in Zhangjiakou has found an intelligent and convenient AR navigation system.
Compared with traditional navigation methods, AR navigation combines route identities with real scenes and has a more immersive and intuitive visual experience. Open the camera to identify the surrounding real scene, and you can easily lock your position. After entering the destination, follow the AR virtual arrow on the ground to reach the destination.
“This exclusive APP is the” large-scale scene AR navigation system “in the snow intelligence special project, which realizes the construction of centimeter level 3D map in large-scale scenes, and solves the problems of precise positioning and tracking in complex dynamic scenes. Xia Xinxing said that the exclusive APP covers the map of ancient poplar venues, providing AR navigation, AR marketing, AR interactive entertainment, and AR information release, so that every athlete or audience has exclusive “virtual navigator” and “commentator”.
Ar smart navigation mainly faces challenges such as large coverage area of surrounding areas, short data acquisition time and unified style of buildings in the Winter Olympic Village, making it difficult to accurately identify images. “With the powerful ability of sensemars (Mars hybrid reality platform), the project innovatively supports the cm level high-precision 3D map construction of Zhangjiakou Winter Olympic Village in a short time through the data association method and parameter block optimization method of GPS and visual fusion.” Xia Xinxing said.
What’s more surprising is that athletes don’t need to download exclusive apps. They can easily experience it with the help of a web browser. At the same time, mobile terminals equipped with IOS, Android and Hongmeng operating systems are widely supported
desktop suspended light field, you can see 3D scenes without 3D glasses
The audience greenhouse of the national ski jumping center has a magical display setting. When you enter the greenhouse, you can see a virtual three-dimensional scene suspended on the desktop with naked eyes on a table without 3D glasses, showing the Winter Olympic venues and ice and snow sports scenes.
Originally, this is the “desktop suspended light field 3D display system” specially developed by snow wisdom. The system solves the problems of large amount of 3D display data, difficult real-time and high-precision rendering, complex equipment and difficult maintenance.
In addition to the spectator greenhouse of the national ski jumping center, the project has developed two sets of prototypes. The other set is a Beijing cabin in Beijing Winter Olympic Village, which provides a panoramic three-dimensional Olympic display for athletes and spectators of the Winter Olympic Games and improves the sense of science and technology of watching the games.
“This system makes the audience have a stronger sense of participation and realism. The most important thing is to get rid of 3D glasses and watch the suspended 3D scene more naturally and from different angles.” Xia Xinxing said
“xueruyi” ground has a large “snow screen”
During the Winter Olympic Games, at the national ski jumping center in Zhangjiakou competition area, the audience will find that on the middle snow surface at the end of “xueruyi”, there is a “snow screen” with high-tech content and an area of 1000 square meters. During the interval of the event, wonderful images such as Chinese customs and customs were continuously played on the snow screen, which made the audience constantly sigh the charm of the “science and technology Winter Olympics”.
This is the “high-power panchromatic laser projection display system” specially developed by snow wisdom. The “snow screen” adopts two 100000 lumen ultra-high brightness HD laser projectors.
“Compared with general projection, panchromatic laser projection has wider color gamut, higher brightness, healthy eye care and low energy consumption.” Xu Lixin, Professor of China University of science and technology and deputy director of Anhui Key Laboratory of Optoelectronic Science and technology, said that the “Research on large-scale complex surface panchromatic laser projection display technology” has overcome technical problems such as integrated display. It is the latest achievement of China’s advanced display technology, with completely independent intellectual property rights and international advanced level.
