Thanks to the ＂cheetah＂ of the whole network, made by the front desk!

“‘ Thanks to Cheetah ’ Let the foul have nowhere to escape. "

On the evening of the 7th, there were many collisions and accidents among the contestants in the men’s 1000m short track speed skating final of Beijing Winter Olympics. Finally, the referee looked back at the video system and decided that Ren Ziwei of China won the championship and Li Wenlong won the silver medal. After the game, many netizens shouted: "Thank you cheetah".

What exactly is a cheetah? Is it really it that decides the controversy in short track speed skating? The News Hyperlink program of China Voice of Central Radio and Television Station interviewed the head of the Cheetah R&D team — — Zhaowei, a senior engineer in the special equipment department of the Central Radio and Television General Station, came to see the secret ↓

Have the speed of "cheetah"

Special shooting equipment is 90 kilometers per hour.

Cheetah, whose full name is "Ultra-high-speed 4K track camera system", is a special camera equipment independently developed by the Central Radio and Television General Station for five years, which is specially used for the broadcast of speed skating events in the Winter Olympics. This Winter Olympics is its debut.

Zhaowei said that it is called "cheetah" because it is very agile. In the speed skating competition of the Winter Olympics, the speed of athletes can reach 15 to 18 meters per second, which is about 50 kilometers per hour, while the speed of top athletes can reach 70 kilometers per hour. The "Cheetah" design technical standard can reach 25 meters per second, which is about 90 kilometers per hour.

Not only that, "Cheetah" can also accelerate, decelerate and surpass according to the needs of live broadcast, so as to capture various scenes in speed skating competition more flexibly and casually.

△ "Cheetah" that runs faster than speed skaters

Why didn’t you use "cheetah" in the short track speed skating competition?

Zhaowei revealed that there is only one set of "Cheetah" system, which is installed in the "Ice Ribbon" venue. The short track speed skating competition that netizens paid attention to on the 7 th did not use the "cheetah". Why is this?　

△ "Cheetah" and its high-speed orbital companion

According to reports, the high-speed track system has certain requirements for the venue. It is necessary to install the track system behind the sponge cushion of the athletes outside the stadium, and also install isolation plates to ensure the safety of the surrounding people. However, this short track speed skating venue does not meet the deployment requirements of Cheetah. For the sake of adaptability and safety, Cheetah system was not installed in the short track speed skating competition.

△ zhaowei, head of the special equipment department of the reception desk

In addition, the referee system and the TV relay system are independent of each other. The referee system will arrange some cameras at the scene to shoot the key positions in the venue or the players’ foul actions. Referees will refer to the images of the referee system more than the live images we see on TV.

△ Cone barrel camera developed for speed skating live broadcast

What other "reporting artifacts" are there in this Winter Olympics?

·"Time Slice": It can dissect the instantaneous black technology

In addition to "Cheetah", the technical team of the main station also developed an AI image processing system for the 8K live broadcast system, so that the wonderful moments of athletes’ competitions can be presented in a "time slice" way.

On the morning of the 8th, in the broadcast of the women’s freestyle ski platform final in which Gu Ailing won the third gold medal for the China delegation, it was with the help of "time slicing" technology that the audience intuitively saw that Gu Ailing seemed to have "separation" through video playback, and from takeoff to landing, the flying trajectory composed of multiple postures was frozen in the same picture.

·The upgraded front desk "China Red" is coming.

As the international mainstream media and rights-holding broadcaster, CCTV is responsible for broadcasting the opening and closing ceremonies and producing public signals with the world-leading 8K technology.

At the same time, the main station also realized the 4K recording and broadcasting of the first event in the history of the Olympic Games, and produced public signals for freestyle skiing, speed skating and other projects with 8K technology. The continuous upgrading and innovation in technology is only to create the best audio-visual experience.

Augmented Reality (AR) Live Presentation System

The theme of the opening ceremony of the Winter Olympics is "Building a Snowflake". With the full support of technology, the broadcast control system team of the main station carefully constructed the augmented reality (AR) live presentation system for the opening ceremony. The virtual snowflakes are all made in real time by using AR technology, and the large-screen images are played at a playback rate of 50 frames, which makes us see the millisecond moment of "Yanshan Snowflakes as big as a seat".

Beijing Winter Olympics, the reception desk will accompany you.

together for a shared future