Marketing or real use? Robots make table tennis more possible.

  Core reading

  The table tennis robot demonstrates the powerful "behavior" ability of artificial intelligence. In the future, with the upgrading and maturity of table tennis robots, it will help athletes to train better and promote the popularization of table tennis.

  Some time ago, a video of "the longest ping-pong round in history" released by the ITTF aroused widespread concern among fans on the Internet. In the video, professional players and table tennis enthusiasts use different tools such as rackets, spatulas and books to relay the ball back in different environments, and staged an interesting table tennis party.

  Nowadays, the application of artificial intelligence technology has inserted the wings of imagination into table tennis. A table tennis robot with a smart "brain" is constantly challenging. Will it defeat the table tennis world champion?

  Help popularize sports.

  In 2014, German table tennis star Bohr faced a table tennis robot named KUKA. In the face of robots, the former world No.1 player took high gear and low gear, but he could only rely on tennis balls and edge balls to keep up with the score and finally win narrowly. Although this duel is only an advertising marketing, the level of robots was not very strong at that time, but the seeds of imagination have been planted in the hearts of researchers.

  China Table Tennis Institute of Shanghai Sport University cooperated with Xinsong Robot Automation Co., Ltd. to develop two generations of Pongbot table tennis duet robots. Although the fighting robot has only one mechanical arm, it can already achieve man-machine combat. At the same time, through the deep learning and reinforcement learning model in the artificial intelligence algorithm, the robot can "study" the opponent’s movements and hitting methods while playing, and formulate the return strategy by predicting the table tennis trajectory.

  Deng Yaping, the Olympic champion of table tennis, once competed with the second-generation duet robot in a TV program, testing the performance of the robot from three dimensions: speed, strength and rotation. From the beginning of the "helpless" when facing the fast break, to the end, the robot can successfully catch the difficult backspin ball. After one or two hundred rounds of fighting, the robot has shown strong adaptability and learning ability. "Table tennis robots have great potential and cannot be underestimated." Deng Yaping said.

  In fact, robots have been widely used in medical care, automobile, chemical industry, education and other fields. In the field of sports, there are also companies that have produced robots that can complete gymnastics movements. Ren Jie, vice president of China Table Tennis Institute of Shanghai Institute of Physical Education, who participated in the research and development of table tennis robots, said that the original intention of designing table tennis robots was to use scientific and technological means to help athletes train better and promote the popularization of table tennis.

  Strong learning ability

  In March of this year, Pombert played against the robot’s "brother" product — — Serve robot comes out. The service robot has two mechanical arms, which can throw the ball with one hand and hit the ball with the racket in the other. Compared with the traditional service machine, the service robot highly restores the service action of real people, provides athletes with time to observe their opponents, and exercises their reaction ability and ball handling ability.

  However, in order to achieve a high degree of personification, in addition to the appearance and action, we must also realize the variety of service. Ren Jie introduced that the service robot can set different rotation types and landing points of the ball, and can simulate different playing styles through the quick change of the racket. "After practicing such a combination, I feel as if I am playing against a real person, or a master!" An experiencer lamented.

  The "trump card" of the serve robot is the function of trajectory analysis and action analysis. Two distributed binocular vision systems are like a pair of "smart eyes", which can capture the trajectory of the ball and the athletes in time. Coupled with the "brain" of artificial intelligence algorithm for deep learning and timely adjustment of technical and tactical strategies, a set of "combination boxing" makes the service robot "smart".

  "If you beat the human Go master ‘ Alpha dog ’ Show us the powerful artificial intelligence ‘ Thinking ’ Ability, the table tennis robot shows the powerful artificial intelligence ‘ Behavior ’ The ability reflects the manufacturing strength in the field of industrial automation in terms of accurate identification, rapid response and flexible control. " Ren Jie said.

  With a deep understanding of table tennis, China Table Tennis Institute has avoided many detours in the process of cooperative research and development of table tennis robots. At the beginning of the design, the serve robot was set at a very fast speed. Later, it was found that this exceeded the acceptance ability of most athletes, which not only failed to achieve the exercise effect, but also increased the configuration of motors and motors, which was completely unnecessary. "Technology research and development should conform to the laws of reality." Ren Jie said, "So we suggest debugging the robot with reference to the speed, frequency and rotation of the ball when the coach conducts multi-ball training."

  Wide application prospect

  In the past table tennis class, 20 students shared 10 tables. If the teacher practiced multi-ball training one by one, it was often difficult to take care of all the students in one class. Gu Nan, director of the training department of China Table Tennis Academy, said that after the school starts, the college will put 10 service robots into classroom teaching. Through personalized settings, each student can carry out targeted training in a mode suitable for his current level. In this way, teachers have more time to guide students.

  Robots can assist teaching, can the training object be robots? China Table Tennis Academy makes serve robots and duet robots become "apprentices". The former uses professional training mode and flexibly adjusts course training according to the progress level of apprentices. The latter quickly learns different return strategies.

  If the goal of the duet robot is to beat the world champion of table tennis, then the service robot takes the route of "being close to the people", which is more suitable for ordinary table tennis lovers to practice basic skills. In the future, in addition to daily teaching, service robots can also enter community fitness centers, table tennis clubs and so on. With such a machine, one person can also play ball. If you set the relevant data, you can have a hearty duel.

  Ren Jie imagined that in the future, with the help of technologies such as 5G and AR (augmented reality), robots may also be able to synchronize the movements of the participants at the other end of the line in real time, realizing the "cloud battle" of table tennis matches, making table tennis break through the limitations of time and space and become more interesting. Shi Zhihao, dean of China Table Tennis Institute of Shanghai Sport University, hopes to lead the development trend of table tennis in the world through the combination of artificial intelligence technology and table tennis. At the same time, in the process of upgrading the related products of table tennis robots, more technological innovations will be applied to the cultivation of high-level table tennis talents.

Fast girl "Cecilia Cheung" is caught in the plastic surgery door (Photos)


What was exposed by netizens is said to be a photo of Gong Mi before plastic surgery.


  In just a few days, Gong Mi, the "replica of Cecilia Cheung" in Zhengzhou Division of super girls this year, has become a celebrity, and his photo click-through rate on the forum has exceeded one million. Following the exposure of her photos behind the scenes of "Fast Girl", yesterday, some netizens exposed the photos allegedly taken before Gong Mi’s plastic surgery, which attracted a heated discussion-this "Cecilia Cheung-like" woman brought out a new term in the entertainment circle in 2009: plastic surgery door.


  Our reporters Dai Yujing and Chen Yuzhong


  Netizen broke the news:


  In 2008, she was nothing like Cecilia Cheung.


  Recently, a photo called "Gong Mi’s photo before plastic surgery" was exposed. A netizen named "I’m tired of the name" said that Gong Mi filmed the MV of singer Donglaidongwang’s "The Singer of Love Songs" in 2008, which was nothing like Cecilia Cheung at that time. In this regard, Miss He, the agent of Donglaidongwang, said that she couldn’t remember who the girl was at that time, only knew that she belonged to the Beijing Film Academy. Miss He also said: "At that time, she didn’t feel like Cecilia Cheung at all." -When this statement came out, Gong Mi immediately fell into the "plastic surgery door" that was hotly discussed by netizens.


  In this regard, Gong Mi generously responded: "Parents who suffer from physical problems, if plastic surgery is disrespectful to their parents." As for netizens who questioned that she was deliberately plastic surgery into Cecilia Cheung, Gong Mi said, "When I heard the news, I was actually a little happy, because I was like this since I was a child, and I was said to be deliberately plastic surgery, which showed that I was still a little beautiful."


  In addition, Gong Mi also revealed that the blog opened in his own name on the Internet is not his own. "I want to register one, but the name has already been registered." In an interview, Gong Mi spoke very slowly, and she looked a little childish.


  Responding to "Imitating Cecilia Cheung":


  Can only sing her "Star Language Wish"


  As for being questioned by netizens as "too imitative and too like Cecilia Cheung", Gong Mi admits that he is a bit like Cecilia Cheung in appearance, and he is often mistaken by passers-by. However, Gong Mi said that she would only sing Cecilia Cheung’s "Star Language Wish" and would not deliberately imitate her in the competition. Gong Mi didn’t care at all about many online attacks on her saliva. "I don’t really surf the Internet.".


  As Gong Mi quickly became a topic, the reporter immediately interviewed a staff member of Hunan Satellite TV, hoping to learn more about her. The person in charge of publicity told reporters yesterday that the director group didn’t want to emphasize too much on any player, and wanted to give other players more opportunities. Of course, appearance is one of the factors, but there are still many important factors. "We don’t speculate on anyone casually."


  Fans encourage fans to leave messages on the Internet, many of which support and encourage Gong Mi, and most of them praise her beauty and good voice.  


  "Looks like! We’re halfway there! Bless you! "


  "Although Gong Mi has nearly 80% similar faces to Cecilia Cheung, her voice is much clearer than that of Cecilia Cheung. This girl still deeply captures the hearts of the media and the audience, lovely smiling face, crisp voice, hey, in a word: I like it! "


  "If there were no Cecilia Cheung, I would still choose her (Gong Mi)!"  


  Some netizens denied Gong Mi’s appearance, and some even expressed anger in their words.  


  "The whole eyes, will leave bags under the eyes, Gong Mi heavy makeup bags under the eyes are still so obvious! A doctor friend, after seeing your photo, is sure that your eyes have been fixed. It’s as high as the cheekbones, but my cheeks suddenly sag incongruously. It’s too fake. The chin pad is too exaggerated, and the smile is unnatural. You still keep learning the tone of Cecilia Cheung, learn to laugh, learn to nod, and learn to touch your hair … "-You are dishonest.


  "Gong Mi looks like Cecilia Cheung, which is obvious to all. If she is just an ordinary woman among the fast girls, will everyone like her as always?"


  —— Wang Dong VIP


  "I came to pay attention to Gong Mi because of Cecilia Cheung. When I first saw them, I thought they were very similar, just like when I saw Bai Zhi in his late teens. My feelings for Gong Mi are very complicated. One is that I like it, and the other is that I don’t want her to imitate Cecilia Cheung all the time. "


  —— Juventus _ Wang Dao  


  Comments from the industry insiders are relatively calm. On the whole, Gong Mi’s singing skills are not particularly affirmed, but his comprehensive strength is not bad.  


  "You are the first one who looks as beautiful as you and sings so well." —— Chang Kuan, the judge of Zhengzhou Singing District, a fast girl.


  "In fact, there are a lot fewer’ fast girls’ this year. Due to the recent resurgence of the’ Yanzhaomen’ incident, Cecilia Cheung is a focus figure. It is very timely for Gong Mi to come out now. It is very important to be able to catch more eyeballs and become popular. " -Senior reporter

  Related links:



  • Copying Cecilia Cheung into a "fast girl" red man Gong Mi: I am very happy to be said to have plastic surgery 2009-06-01
  • Happy girl Gong Mi’s video exposure looks like Cecilia Cheung. 2009-05-31