Undoubtedly, the hottest event in China in February is the Beijing Winter Olympics: the beloved ice piers, the picturesque opening ceremony, and the Gu Ailing players who "dominate the list" during the holiday... All left a deep impression on the audience.
Behind this wonderful event is inseparable from the support of high technology. Whether it is safety and epidemic prevention, audience guidance and security inside and outside the field, or capturing wonderful moments on the field, event broadcasting, as well as live 8K viewing and online VR viewing, behind the need for the integration of various technologies support.
As the Winter Olympics come to an end, various AI technologies have also appeared. Today, Nuggets will come to pick up the "black technology" that makes people shine at the Winter Olympics.
Megvii: Interval intelligent epidemic prevention system + indoor visual positioning and navigation
First of all, let's say that you are a spectator, waiting outside the stadium to enter, in addition to checking the ticket, it is more important to measure the body temperature and check the health code to achieve accurate prevention and control of the epidemic.
Kuang believes that the "intelligent temperature measurement" solution can be used by multiple people to measure temperature at the same time on the one hand, and on the other hand, it can realize non-contact AI-assisted screening of suspected fever personnel. The organizer only needs a small number of staff to complete the audience temperature check, which greatly improves the detection efficiency and reduces the risk of cross-infection.
After entering the stadium, you are definitely unfamiliar with the venue, whether it is looking for a seat or a bathroom, you need "indoor navigation".
Common indoor navigation on the market mainly relies on Bluetooth, Wi-Fi and other technologies for identification, which is costly and has low accuracy, and is easily limited by the scene. In relatively closed venues, due to the dense audience and poor mobile phone signal, the traditional indoor navigation effect is not obvious.
To this end, Megvii has developed an indoor visual positioning and navigation system, which adopts indoor visual positioning technology, without the need for secondary transformation of the indoor architectural environment, and only uses laser visual map acquisition equipment to collect the existing environment, which can realize the positioning function.
Compared to traditional indoor navigation, the system has two main highlights:
The accuracy is improved to the sub-meter level, in comparison, the traditional GPS positioning accuracy is about 5 meters, and the WiFi and Bluetooth positioning are 1-3 meters;
There is no need to add additional sensors, and there is no need to install auxiliary positioning equipment in the indoor environment, which is cost-effective.
Zhang Changsheng, a project engineer for the Megvii Winter Olympics, said that the audience can easily locate it by taking a mobile phone shot; and supports offline recognition and positioning, which can still be smoothly navigated in places where 5G/4G cannot be completely covered by large crowd density.
SenseTime: AI viewing + AR navigation
Let's say you've found your seat and started watching the contestants perform. However, due to the problems of human vision and angle, it is difficult for the audience to capture the wonderful picture of the game; and for some highly professional sports, the audience needs professional commentary to feel the beauty of the movement.
For example, in curling, known as the "chess" of the Winter Olympics, due to the small size of the curling body, the long visual distance, and the susceptibility to interference from the athlete's body, the spectators in the seats had to use telescopes or large screens to observe the details.
In order to solve this problem, SenseTime has created a "curling motion trajectory capture" technology based on visual AI perception, deep learning, 3D modeling and spatial positioning.
This technology overcomes the problem of accurately capturing the trajectory of smaller objects based on long-range viewing distance in the super space environment, and realizes the detection and tracking of sports curling and trajectory capture through the digital mapping of real scenes. At the same time, combined with real-time rendering and virtual and real synchronization technology, the system can accurately restore the curling trajectory, and convert the picture into a video stream, which is output to the network platform and the live screen.
With this technology, whether offline or online, the audience can observe the details, sports rules and competition conditions of curling at close range; the commentator can also analyze the state of the athletes and the throwing skills, tactics, etc., to achieve "AI viewing".
Similar to Megvii, SenseTime has launched "AR Navigation" in terms of navigation, but it focuses on the outdoors, mainly for athletes and staff in the Olympic Village.
In Zhangjiakou Winter Olympic Village, due to the large area of the Olympic Village and its surrounding area (more than 300,000 square meters), it is very technically demanding to build a high-precision three-dimensional map in a short period of time; moreover, the architectural style of the village is unified, coupled with ice and snow cover, in this environment, it is difficult to accurately identify its own location based on images.
In this regard, SenseTime trained robust image features under different weather conditions through the data correlation method and parameter block optimization method of GPS and visual fusion, as well as the comprehensive use of visual, Bluetooth, GPS and other signal technologies, and trained robust image features under different weather conditions for ice and snow scenes, so as to achieve 6 degrees of freedom spatial positioning in complex scenes.
It is understood that the navigation system can realize the construction and deployment of three-dimensional maps at the centimeter level in large-scale scenes, and solve the problems of accurate positioning and tracking in dynamic and complex scenarios. The user opens the mobile phone exclusive APP, opens the camera to identify the surrounding environment, you can locate your own position, enter the destination, follow the AR virtual arrow, you can navigate.
Dahua Shares: Intelligent video tracking system
For the Winter Olympics, another important link is the use of video technology to identify whether the players' actions are illegal, so as to assist the referee in judging the scores of the players more accurately, which is not only a respect for the players and events, but also reflects the organizers' fair and open Olympic spirit.
In the past, penalties were mainly based on the subjective consciousness of the referee, and the person himself would be limited by factors such as perspective and experience, and it was easy to ignore some action details.
For example, in some projects with fast speed and narrow tracks, it is not uncommon to be affected by the environment of the venue, misjudgment, misjudgment, etc., thus affecting the performance of the players and the fairness of the race.
To this end, Dahua Co., Ltd. has developed an "intelligent video tracking system" specially suitable for the Bobsleigh and Bobsleigh Projects of the Winter Olympic Games, which can capture the pictures of athletes passing through different slopes under the high-speed movement scene, and carry out seamless and orderly display, record every detail of the competition, provide a video basis for the referee's judgment, and ensure the fairness and justice of the competition.
The system can also be used to improve athlete training and provide data support for pre-competition training. Athletes can review through the event video, can find difficult to detect the details of the action or the existence of the action defects, so as to develop a targeted training plan to improve the training effect.
Uniview: outdoor LED large screen + intelligent security system
As mentioned earlier, in some Winter Olympics events, spectators need to observe the details of the game through a large screen. For some competition venues, the outdoor large screen as an important platform for information transmission, the screen itself needs to meet many harsh conditions.
For example, large screens should operate stably under extremely cold and waterproof conditions, and 8K broadcast technology has very high requirements for IC chips and power supplies.
Starting from the actual scene, Uniview provides outdoor MW75XX series P5 products, which mainly adopt configurations such as high refresh IC, high efficiency moisture-proof power supply, and IP65-rated signal.
In terms of waterproofing, through the treatment of module waterproofing, box waterproofing, and waterproofing of key devices, it is ensured that it can still work normally in heavy snow or humid environments. In terms of hardiness, in addition to the use of low temperature power supply, heating equipment is also installed in the screen body to ensure the stable operation of the equipment.
Another highlight of Uniview at the Winter Olympics was its participation in the transformation of the intelligent security system of the Capital Gymnasium and the Ice and Snow Town Cultural and Creative Shopping Street.
In the intelligent security project of the Capital Stadium, Uniview provides nearly 1,000 high-definition video surveillance, intelligent integrated storage, and other production network solutions. The real-time data of the entire venue can be directly pushed to the Platform of the Olympic Organizing Committee to provide technical support for the safety and security of the Olympic Games.
The intelligent security system of the Ice and Snow Town Cultural and Creative Commercial Street, Uniview provides nearly 1500 high-definition video surveillance, intelligent integrated storage, hyper-fusion analysis platform and LED large-screen display control and other network solutions, which can arrange corresponding equipment in important channels and combine background data to help the security work of the Winter Olympics.
In addition, Uniview is also involved in smart high-speed.
Taking Yanchong Expressway as an example, as the main highway passage into the Chongli Competition Area of Zhangjiakou of the Winter Olympic Games, Yujing has improved the operation and management efficiency of the traffic management platform by deploying more than 1,000 road cameras, 199 sets of intelligent operation and maintenance boxes and other equipment.
Zhongke Zhiyun: Intelligent Sentinel Robot
Many competitions are held outdoors, so the security of outdoor projects is also very important.
Off the field, the event venue is usually equipped with physical fences or use manpower to maintain security work, but in the environment of complex terrain, harsh climatic conditions and large temperature difference between day and night, how to provide safety protection for the field and reduce the burden of manpower is also a problem that needs to be solved.
For example, Zhangjiakou Secret Garden Genting Park (one of the venues for the Winter Olympic and Paralympic Games), covers an area of about 100 square kilometers, is located in the Ma Mountains where the Taihang Mountains and Yanshan Mountains meet, and the night temperature can reach minus 40 degrees.
Under such harsh conditions, relying on traditional methods such as manpower and fencing is not only inefficient and ineffective, but also increases high labor costs. Based on this, Zhongke Zhiyun and its partners jointly developed the "Intelligent Sentinel Robot".
The robot uses the recognition algorithm and anti-intrusion technology of Zhongke Zhiyun to distinguish low feature differences and solve the problems of anti-attack, anti-camouflage and stability. In daily monitoring, the robot can carry out boundary monitoring, target recognition, multi-target tracking, foreign object detection, crossing warning and other functions around the clock, and automatically and accurately determine the category of intruders, and upload the monitored situation or the intruder's whereabouts to the background command center to ensure the safety of the arena.
Nuggets learned that at present, 13 intelligent sentry robots have been put on duty, monitoring distances of more than 15 kilometers, forming an electronic barrier, equivalent to the security force of the traditional 200 guards.
iFLYTEK: Voice interactive terminal
As an international event, the participants and some spectators of the Winter Olympic Games come from all over the world, and the language differences are different, which is easy to cause communication barriers; and some special groups, such as some players in the Paralympic Games and some spectators with communication barriers in the Winter Olympic Games, will also encounter difficulties in the process of participating in and watching the games.
iFLYTEK has developed a multilingual intelligent speech and language service platform, as well as a variety of translation equipment, to provide customized and optimized speech recognition, speech synthesis, machine translation, automatic question answering and other services.
It is reported that the platform simultaneously supports 60 language speech synthesis, 69 language speech recognition, 168 language machine translation and 3 language interactive understanding. The accuracy rate of Chinese and English, Russian, French, Spanish, Japanese, Korean and other key languages under the Winter Olympics scenario is not less than 95%, and the average translation response time per sentence does not exceed 0.5 seconds.
Duran, senior vice president of iFLYTEK, said that iFLYTEK has helped the Winter Olympics from three aspects.
Human-to-human communication to facilitate language exchange between players, coaches, tourists and volunteers from different countries and regions;
Communication between people and organizations, automatic translation and transcription of conference machines;
The communication between people and events is mainly to help audiences and tourists from all over the world quickly grasp the information of the event, and to assist the visually impaired to hear the Olympic text and the hearing impaired to see the Olympic voice.
iFLYTEK has also launched devices such as dual-screen translators and virtual human intelligent interactive all-in-one machines, which improve the timeliness and convenience of multilingual information acquisition, release and dissemination, and meet the needs of barrier-free and cross-language communication for the Winter Olympic and Paralympic Winter Games.
Danghong Technology: 8K encoder
Subject to the epidemic, the audience that can go to the scene to watch the game is a minority after all, and many people can only participate in the Winter Olympics and enjoy the highlight moments of the Winter Olympics through online means, which requires the use of 8K live broadcast technology.
As the ultra-high-definition technology closest to the "human eye reality" at present, the resolution of 8K is 16 times that of high-definition, which is stronger than 4K in terms of quantization, frame rate, color gamut, etc., combined with 3D rendering and other technologies, it can bring the audience an "immersive" experience.
However, in order to achieve 8K ultra-high-definition live broadcasting, in addition to the use of special 8K cameras and professional color grading and packaging, in addition to the acquisition and production, it also involves the core step of "encoding transmission".
Encoding transmission, that is, the huge amount of video data 8K ultra-high-definition video, through the encoder to compress the 8K live message number stream, while reducing the pressure of transmission bandwidth, so that it adapts to 8K ultra-high-definition TV, 8K ultra-high-definition outdoor large screen and other terminals, and finally can be smoothly and stably presented.
Because 8K Ultra HD live broadcast requires low bit rate, high image quality, high concurrency, and low latency, this brings many challenges to encoding transmission.
On the one hand, the amount of video data is too large, and the requirements for computing performance (such as computing power, algorithms, etc.) and coding efficiency are very high;
On the other hand, while requiring a higher compression ratio, users also put forward higher requirements for image quality.
Therefore, through cooperation with Intel, Danghong Technology has launched an 8K AVS3 Ultra HD one-stop solution.
The AVS3 mentioned here is the video coding standard (the third generation) with independent intellectual property rights in mainland China, which adopts a more flexible block partitioning structure, a more refined prediction mode, and a more adaptive transformation core, which saves about 30% of the bit rate than AVS2, thereby improving the encoding efficiency.
At the same time, based on the coding model of image analysis and subjective vision, the scheme improves the coding quality through the deep learning super-scoring technology of hundreds of thousands of material libraries, as well as different scenes, high and low resolution difference learning and AI training.
In this Winter Olympics, Danghong Technology's 8K encoder is also adapted to the first domestic HDR standard (HDR Vivid), achieving greater exposure dynamic range, better extracting and displaying highlight and shadow details, enriching colors and levels, enhancing the sense of depth, and making the picture closer to nature.
Heaven and Earth Great: Environmental Protection Bayonet + Super Starlight Illegal Stop Ball
During the holding of large-scale events, traffic problems are also more prominent, especially after the sharp increase in traffic flow, traffic law enforcement can not rely on manual inspection alone to solve.
In order to ensure the smooth operation of traffic, the Beijing traffic management department has deliberately divided 42 Olympic lanes of nearly 239.5 kilometers. In these lanes, a dedicated "electronic police" is deployed to carry out law enforcement work through two ways: on-site law enforcement by traffic police on duty, and bayonet cameras to capture and record off-site law enforcement.
To this end, Tiandi Weiye launched the "Tianxing Environmental Protection Bayonet" and "Super Starlight Illegal Stop Ball".
When the ordinary electronic police capture at night, they will produce an instantaneous flash, which is easy to cause visual impairment to the driver and there are certain traffic hazards.
Tianxing environmental protection bayonet mainly adopts dual Sensor multi-spectral fusion technology, the incident light passes through the optical separation device inside the camera, and the visible light is used to capture the color; while the infrared light is used to feel the texture and brightness, the acquired picture is pixel-level frame-by-frame fusion, the overall color reproduction is high, no color cast, and the overall brightness quality of the image is high.
At night, the product can minimize light pollution through infrared fill light, obtaining the same full-color effect as white light flashing, which can detect and capture illegal vehicles without affecting the driver.
For the phenomenon of illegal parking, the super starlight illegal parking ball of Tiandi Weiye can form a 360-degree inspection in the layout field, forming an all-round, all-time coverage, and driving away the illegal parking vehicle through voice alert.
Zhang Zheng, brand director of Tiandi Weiye, said that the illegal parking ball can be applied to complex scenarios, and the success rate of detecting illegal parking vehicles is more than 95%.
Suzhou Keda: AI ultra-micro photoelectric police + AR real scene command
In terms of traffic, Suzhou Keda has launched "ultra-micro photoelectric police", electronic bayonets, illegal parking balls and other products, which are arranged in many sections and intersections in Zhangjiakou City.
Among them, there are nearly 400 sets of AI ultra-micro photoelectric police landing on the main road, without the need for fill lights, you can capture clear and accurate illegal pictures at night, reduce light pollution at the same time, and provide visual support for solving illegal stops, violations, etc.
In the entire traffic operation state, Keda relies on high-point monitoring to be equipped with AR real-world command system.
The traditional traffic command system requires multiple cameras to provide real-time data, but there is a problem of independent and incoherent picture, and it is difficult to reflect the overall traffic area situation of the split picture, and the command center cannot take into account the overall situation.
Relying on 3D positioning, AI and other technologies, Keda's AR real-scene command system can obtain panoramic video of the monitoring point through the AR high-point panoramic camera, and then form a video linkage with the low-point camera in the region, taking into account the whole and the part.
At the same time, the system supports video access, data display, information annotation and other functions, providing three-dimensional and visual traffic information to the command center and helping the traffic operation of the Winter Olympics from multiple angles.
epilogue
"Intelligent and humanized" is the scientific and technological background of the Winter Olympics, and various unheard and unseen technologies have presented a new "Chinese business card" for the world while improving the competitive effect and changing the way of watching the games.
Praise and salute to those enterprises that silently provide technical support behind their backs! Leifeng NetworkLeifeng Network