The roller skating performance "Line Chases People" stems from the application of this high-tech initiative to performance

"In the past, people chased the line, now the line chases people." The sub-director Wang Xing described the innovation of roller skating performances and ground images. How to achieve "the line chases people"? Yang Jiandong, team technology innovation manager of the National Stadium, introduced that the application of 3DAT technology (three-dimensional athlete tracking technology) is a major key.

The technology team is jointly formed by the Beijing Film Academy and Intel Corporation, and the core team is about 20 people. Tong Lei, dean of the School of Sound at the Beijing Film Academy, and He Yuxin, project manager of Intel, roughly described the operation process of the system: the entire system roughly includes a camera system, a server system for computer vision and artificial intelligence processing, and a rendering system for rendering on the back end. During operation, the technical team covered the whole scene by four highly detectable cameras placed on the 6th floor of the Bird's Nest Stand, so as to collect the images of the actors on the field, judge their position, and then feedback the location information and action information to the rendering system, and the rendering system then combined the actors' positions, actions, and postures according to the artistic effects set by the director, combined with the actors' positions, actions, and postures, for real-time on-site synthesis.

In addition to "Salute to the People", the "Snowflake" section at the end of the opening ceremony also uses this system. In general, 3DAT technology is mostly used in athlete training, helping coaches organize and propose scientific training plans and professional strategies, "and this system is the first time in the world to use Intel 3DAT technology in performances." He Yuxin said, "The difficulty of this system is that it is real-time." Such a long chain, to go through several sets of servers, the delay of the whole process is about 100 to 200 milliseconds, so visually, the rendering effect is like following the actors, it gives the directors more room for artistic creation. ”