Cui Haiting Yang Lei Shandong Institute of Physical Education Jinan 250102, Shandong, China
Abstract: Virtual sports is the product of the interaction between sports reality and simulation. Virtual sports studios based on electronic surround projection screens, camera synchronous tracking, and computer synthesis rendering are used in the transformation of high-tech scientific research achievements and digital sports media innovation in colleges and universities of sports. Plays an important role. This paper analyzes the characteristics of virtual sports and the application status of virtual sports studios. Combining with the actual situation of laboratory construction in colleges and universities of physical education, the application plan of virtual sports studios is elaborated from three aspects of hardware configuration, process arrangement and software design. New ideas for innovation and development of sports laboratories in colleges and universities of physical education.
Keywords: digital media; virtual sports; virtual sports studio
Virtual sports is a brand-new concept. It is the product of the combination of computer multimedia technology and traditional sports. It is the combination of film and television program production technology, audio-visual media methods with competitive sports and virtual reality. The sports laboratory is an important place for physical education, scientific research and digital research and development in sports colleges and universities. The virtual sports studio has important advantages in the research and transformation of high-tech sports technology and achievements, which is conducive to improving the research and innovation capabilities of digital sports in sports colleges. It plays an irreplaceable role in highlighting the charm of digital sports.
1. Overview of the construction and application of virtual sports studios
With the deepening of the reform of higher physical education and the construction and development of sports laboratories, how to cultivate scientific research teams and sports talents with innovative spirit and practical ability, make full use of sports laboratories, the research and development and teaching advantages of sports studios have become a hot issue .
1. Current construction status of virtual sports studios
Virtual sports creates virtual scenes of digital sports and simulates the technical and tactical parameters of real sports to realize sports visual calculation, human body position tracking, and dynamic analog sensing. Virtual sports studios use virtual sports as objects to establish people in a multi-dimensional audio-visual space. It is a comprehensive multifunctional laboratory that uses multimedia audio-visual equipment as a carrier and uses the principles of film and television production and communication to carry out media development and scientific and technological innovation experiments on digital sports. Virtual sports studio is an emerging digital sports program production laboratory combining sports program production and digital sports media technology. The high-speed shooting of infrared sports with infrared cameras matches the computer-generated virtual scenes, the transmission of mechanical sensing parameters and modeling, and makes sports in the virtual scenes, producing unique audio-visual artistic effects. The construction of a more complete virtual sports studio has become The only way for the leap-forward development of digital sports.
In 1978, Eugene L. put forward the concept of "electronic setting". CCTV first used virtual studio technology to perform sports programs in China. In 2001, in the report of the Guangzhou 9th National Games, it began to use virtual studios for large-scale sports. The game is broadcast live. At the Busan Asian Games, a two-dimensional semi-framed virtual studio system was used. At the Athens Olympics, a true three-dimensional framed virtual studio system was used, eliminating the real scenic spots and innovating a new way of virtual sports performance.
2. Construction requirements of virtual sports studio
Information technology is changing rapidly, and multimedia technology and network communication technology are widely used in sports. Sports media and sports simulation are more and more digitized and integrated. With the help of high-definition cameras, 3D scanners, motion sensors, and visual tracking systems, the interaction between sports and machines, sports and environment, and sports and intelligence can be achieved. Then provide interactive virtual scenes, model objects, innovate sports communication models, provide quantitative reference for teaching and scientific research, provide scientific basis for scientific tactical strategy formulation, and reasonable training. Virtual sports studios give full play to the interactivity, immersion and economy of digital media and sports, and focus on the integration of media broadcasting media and digital sports, digitize and popularize shared resources, virtualize sports and calculate sports.
Second, the construction of virtual sports studios in colleges and universities
The construction and application of the virtual sports laboratory integrates the functions of radio and television program acquisition, editing, recording, and broadcasting. It supports multi-channel virtual sports program performance and innovation. It takes digital sports as the research object, captures sports movements, and transmits actual combat parameters. Calculation, generation, universalization, simulation, sports digital video and audio processing and other aspects of comprehensive construction.
1. The goal of virtual sports studio construction
The construction of virtual sports studios is mainly used for basic skills experiments in sports digital media.It can engage in digital three-dimensional motion capture, virtual sports media design, biomechanical parameter simulation, sports program recording and editing, and virtual environment human-computer interaction. Therefore, the computer is used for technical and tactical analysis, simulation of game parameters, construction of a virtual training space, and construction of a digital virtual sports world with strong visual impact, serving sports teaching, scientific research, sports media. The construction of a virtual sports studio organically combines sports science, modern information science and media technology to reduce sports operating costs and unexpected sports risks. The completion and improvement of the virtual sports studio is of great importance to the improvement of the overall level of sports schools. effect.
2. System architecture of virtual sports studio
The virtual sports studio adopts a three-in-one architecture model of keying blue box-computer environment simulation, camera dynamic compensation-three-dimensional parameter transfer, surround electronic curtain-virtual environment simulation, and is equipped with two services: rendering machine and server workstation, camera and computer, Using infrared scanners, pressure sensors, motion capture systems, scene resource simulation data processing systems and other integrated control, the construction scheme of the virtual sports studio is shown in Figure 1:
3. Software and hardware environment support of virtual sports studio
Sports motion capture, biomechanical measurement, high-speed data exchange, scene calculation simulation requires hardware equipment and software environment support, choose different upstream and downstream speeds according to requirements, maximize optimization of the connection between the front and back processes, improve computing rendering capabilities, and play virtual The biggest function of the sports studio. In terms of hardware selection, the Smart-D three-dimensional infrared high-speed capture system is used to save the hard disk space for the entire video shooting, and improve the processing speed of sports action shooting. It is equipped with a force measuring platform, a three-dimensional scanner, and an HP graphics and image workstation. The server client operates in dual mode, the system can be alternately backed up, the digital sports media database is more secure, and a large-capacity storage disk array is selected to provide conditions for high-speed storage of materials and virtual synthesis of sports. In terms of software selection, the workstation operating system uses the mainstream Visit operating system to ensure the maximum versatility and compatibility of sports media. The SIMI 3D Motion Analysis System, Avid MediaComposer nonlinear video processing software package and Adobe products are selected. Solutions, including graphic design Photoshop, 3dmax; digital video and audio imaging AfterEffects, animation simulation Maya, sports media resource development and other network teaching resources design and development software Java, VisualC ++ programming tools, to meet the virtual sports from acquisition, editing , Computer synthesis, parameter transfer, virtual scene simulation, seamless connection from rendering to output publishing.
4. Design process of virtual sports studio
The virtual sports studio is mainly composed of three steps: camera tracking, chroma keying and virtual sports calculation. The design process includes three stages: motion capture sports modeling, mechanics analysis scene simulation and virtual sports human-machine interaction scene synthesis. The computer mainly deals with scenes that are difficult to achieve in conventional sports, and can be generated by two-dimensional semi-real and true three-dimensional methods to ensure that the virtual background of the output is synchronized with the real foreground. By obtaining the camera's push, pull, shake, shift, zoom parameters, the camera is judged , The relative position between the main body movement and the virtual scene, analyze the gait, spine, joints and other modules in real time, pass the measured parameters to the 3D scanning model, add the virtual scene, render the character status, calculate the sports vision, and complete the virtual sports broadcast. Combining virtual reality technology and computer digital media technology, the virtual sports studio features sports, integrates existing laboratory conditions, enriches the content and visual effects of digital sports media, and finds digital sports media, virtual sports innovation research A cost-effective and practical way to realize the virtual sports scientific research combining the three points of "virtual sports program production, sports media teaching, and virtual visual computing".
3. Application of virtual sports studios in teaching and scientific research in colleges and universities of physical education
Virtual sports studios give full play to the advantages of digital sports media to carry out computer innovation experiments in the new media environment, introduce advanced information technology and virtual reality technology into the research and teaching of digital sports, and provide simulation training and digital sports for colleges and universities Media, virtual sports media innovation provides a guarantee. In particular, the application of digitalization and virtualization of sports has focused on the construction of sports multimedia teaching, sports virtual training and other experiments, which has improved the performance of laboratory construction. The application of virtual sports studios in colleges and universities of physical education has three specific forms (as shown in Figure 2):
1. Studio application model based on virtual sports program media
The virtual sports studio can provide a place for the teaching of related disciplines, provide a platform for the production of digital sports media programs, realize the construction and sharing of the digital sports media resource library, not only meet the "sports virtual TV program director and production" "keying skills and Experiments and scientific research on virtual digital sports topics such as training, "virtual training simulation", "three-dimensional modeling of moving human bodies", "biomechanics measurement and control", and "virtual sports environment interaction", and provide a comprehensive creative practice training environment for the establishment of some comprehensive innovation experiments The provision of conditions provides digital sports with a supplementary guarantee to solve the bottleneck of real sports, exercise the comprehensive ability of students to develop and apply sports media, and experience the unique charm of virtual digital sports.
2. Studio application model based on digital sports media research
Take advantage of the digitalization, virtualization and sharing of virtual sports studios, give full play to the advantages of new technology sports applications, and creatively carry out some digital sports surreal video and audio simulation experiments. Through keying monitoring, real data parameter simulation, action decomposition, action three-dimensional information extraction and biomechanical analysis, etc., for sports technical and tactical analysis services, making sports audio and video teaching materials, building an Internet sports research platform, and improving virtual full-function sports The audio and video network communication platform satisfies the need for three-dimensional modeling of the human body, and on this basis, the analysis of human body parameters is made, which contributes to improving the technical level of sports and preventing the recovery of sports injuries. Combined with virtual reality technology, the studio hardware is used as a platform to creatively rebuild the virtual training system. The virtual sports studio is used to perform mechanical design and mechanical simulation on sports auxiliary training instruments to lay the foundation for the research of intelligent sports equipment.
3. Studio application model based on digital sports virtual reality
In order to give full play to the overall comprehensive effect of the studio, especially the utilization efficiency of the external studio for teaching and research, on the basis of the virtual sports studio hardware and software, interactive exploration and teaching are carried out, creativity, creation of works, and expansion of students ’future employment basic skills. Combined with modern virtual studio technology, a virtual sports resource library is constructed to produce the immersion, presence and efficiency of virtual reality sports, realize the visual impact that real sports cannot reach, and establish a multi-functional comprehensive virtual sports studio.
4. Conclusion
The virtual sports studio can improve and innovate the existing laboratory conditions, save a lot of money, highlight the characteristics of digital sports in the most cost-effective manner, and make digital sports and virtual sports that are practically impossible to become a reality. The virtual sports studio has a refreshing charm and strong vitality.It can not only expand the space for digital sports resources and virtual sports program creation, but also realize the combination of virtual and reality, sports and computer intelligence, generate novel sports programs, and break through time and space. Constraints, show a variety of virtual sports effects, and at the same time, the application of virtual sports studios in colleges and universities of sports needs to continue to explore the use of sports characteristics of the studio system to further improve the application of new technologies and new media in sports To continuously improve the research ability of digital sports and other digital sports, and explore more scientific and reasonable teaching methods and teaching models.
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