"'Thanks cheetah' left fouls with nowhere to escape."
On the evening of the 7th, the men's 1000-meter final of short track speed skating at the Beijing Winter Olympics had many collisions and accidents between the participants. In the end, the referee looked back at the video system and determined that The Chinese player Ren Ziwei 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 the controversy on the short track speed skating really determined by it? The "News Hyperlink" program of the Central Radio and Television Corporation's Central Broadcasting Voice of China interviewed Zhao Wei, senior engineer of the Special Equipment Department of the Central Radio and Television Corporation, who was the head of the "Cheetah" research and development team, to see the secrets
Has a "cheetah" speed
Special shooting equipment with a speed of 90 kilometers per hour
"Cheetah" full name "ultra-high-speed 4K orbital camera system", is a special camera equipment independently developed by the Central Radio and Television Corporation for 5 years, specially used for the broadcast of the speed skating events of the Winter Olympics, and this Winter Olympics is its debut.
Zhao Wei said that the reason why it is called "cheetah" is because it is very agile. In the Winter Olympics speed skating competition, athletes can reach speeds of 15 to 18 meters per second, which is about 50 kilometers per hour, while top athletes can reach speeds of 70 kilometers per hour. The "Cheetah" design technical standard can reach 25 meters per second, which is equivalent to about 90 kilometers per hour.
Not only that, "Cheetah" can also achieve acceleration, deceleration and overtaking actions according to the needs of live broadcasting, so as to capture various scenes in speed skating competitions more flexibly and casually.
△ "Cheetah" that runs faster than speed skaters
Why didn't the "cheetah" be used in short track speed skating competitions?
Zhao Wei revealed that there is currently only one set of "Cheetah" systems, which are installed in the "Ice Ribbon" stadium. The short track speed skating competition that netizens paid attention to on the 7th did not use the "cheetah". Why?
△ "Cheetah" and its high-speed orbital companion
According to reports, the high-speed track system has certain requirements for the venue, and the track system needs to be installed behind the sponge cushion of the athletes on the outside of the field, and the isolation board is also installed to ensure the safety of the surrounding personnel. However, the short track speed skating venue and the deployment requirements of the "Cheetah" are not in line with each other, and for the sake of adaptability and safety, the "Cheetah" system is not installed in the short track speed skating competition.
△ Zhao Wei, head of the special equipment department of the general station
In addition, the refereeing system and the television system are independent of each other. The referee system will set up some cameras on the spot to specifically shoot key positions in the venue or the foul actions of athletes. Referees refer more to the footage of the refereeing system than to the live footage we see on TV.
△ Cone barrel camera developed for speed skating live broadcast
What other "reporting artifacts" will there be at the Winter Olympics?
·“ Time Slices": Black technology that can dissect moments
In addition to "Cheetah", the technical team of the main station has also developed an AI image processing system for the 8K live broadcast system, so that the wonderful moments of the athletes' competition can be presented in the form of "time slices".
On the morning of the 8th, Gu Ailing won the third gold medal for the Chinese delegation in the freestyle ski women's big jump final broadcast, it is with the help of the "time slicing" technology, the audience through the video playback, intuitively saw Gu Ailing as if he has a "double body technique", from the jump to the ground, multiple postures composed of the aerial trajectory frozen in the same picture.
Upgraded version of the main station "China Red" is coming
As an international mainstream media and rights holder, CCTV is responsible for broadcasting reports for opening and closing ceremonies and producing public signals with the world's leading 8K technology.
At the same time, the main station also realized the first time in the history of the Olympic Games to produce 4K production and broadcasting, and used 8K technology to produce public signals for freestyle skiing, speed skating and other projects, and the continuous upgrading and innovation of technology is only to create the best quality audio-visual experience.
Augmented reality (AR) live streaming presentation system
The opening ceremony of the Winter Olympics was themed "Building a Snowflake", and the broadcast control system team of the main station carefully built the opening ceremony augmented reality (AR) live broadcast presentation system with full technical support. The pieces of virtual snowflakes are all made in real time using AR technology, and the large screen is played at a playback rate of 50 frames, which allows us to see the millisecond moment of "Yanshan snowflakes are as big as a seat".
Beijing Winter Olympics, the main station to accompany you to see
Together towards the future