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As the standard of education informatization, recording and broadcasting has become an important part of the construction of digital smart campus. Nowadays, all local manufacturers, including manufacturers, have publicized their own recording and recording classrooms. Then the question is coming. What is the long-term professional recording and recording classroom?
Don't worry! Beijing Yanqing Second Middle School will tell you the answer.
In order to comprehensively promote the construction of teaching staff and the construction of network multimedia teaching materials resources, develop a high-quality resource sharing mechanism, promote exchanges and learning among teachers, and improve teachers' research and teaching capabilities, Yanqing No. 2 and Hanboer set up a professional five-camera recording and broadcasting classroom. After the project is completed, it will become another excellent application case for education information construction in Yanqing District. It will promote the communication between the teaching units in Yanqing District and play an important role in the development of education and teaching resources and balanced development of quality education in Yanqing District.
After fully understanding the recording and broadcasting requirements of Yanqing No. 2 Middle School, the Hanboer technicians were equipped with a professional five-station recording and broadcasting system with an overall area of ​​more than 200 square meters.
The five cameras built by the professional recording and broadcasting classrooms are responsible for tracking and shooting the teachers, students and blackboards. The microphones are responsible for the collection of teaching sounds in the classroom. The collected audio and video signals are transmitted to the intelligent teaching terminal for audio and video processing, complete local courseware recording, interactive interaction, signal transmission, and organically combine all the signal sources in the classroom to control the operation.
The professional recording system adopts Hanboer's unique image recognition and tracking technology, and completely adopts the unattended operation mode, detects according to the target features, recognizes the position of the target object, and automatically tracks the object. In particular, the student positioning module adopts a new top-view positioning algorithm, and the students in the effective area of ​​the multi-person recognition through the facial features of the human body are accurately recognized both on the front side and the side, and can view the multi-person recognition effect through the background.
The picture composition is reasonable, and the intelligent guide switch can easily realize the automatic switching of the video scenes such as the teacher close-up, the teacher panoramic lens, the blackboard shot, the student close-up lens, the student panoramic lens, and the like, and output the teaching picture most in line with the teaching scene for synchronous recording. The tracking technology is stable and soft. Whether the teacher walks or the student starts to sit up, the system can accurately and automatically use different strategies for automatic zoom tracking to capture a continuous and smooth picture.
In the design of the recording classroom environment, from the classroom ceiling, walls, curtains, floors, doors, lighting, and the platform to do a comprehensive renovation, you can better match the recording and broadcasting system for the recording of quality courses. Ceiling ceilings are made of mineral wool ceiling sound absorbing panels with sound absorbing effect. The curtains are made of beige thick cotton shade cloth, and the walls are packaged with high-quality sound-absorbing cotton. The latex white wall decoration materials are light in color and non-reflective. Taking into account the continuous innovation of modern teaching methods, classroom tables and chairs are deliberately set to a hexagonal shape, teachers can adjust the teaching scene at any time according to the needs of teaching.
In view of the particularity of professional recording and broadcasting classrooms, Hanboer carefully grasps the two acoustic design contents of noise control and sound quality design in the sound environment of the classroom. The sound reinforcement system has natural sound, clear voice, powerful bass and clear and high-pitched voice. There are no acoustic resonance frequency points in the classroom to form a good teaching environment.
In the lighting, the cold light three-primary light with artificial light source has high definition and good color reproduction. The light part can be connected to the central control system to control the light manually or automatically to achieve the best recording effect.
In the classroom layout, the teacher's observation room is separated from the teaching area by a single-sided glass perspective window. This kind of setting not only avoids the teacher's complete observation of the teaching reality, but also avoids the interference to the teacher and the students, creating a real atmosphere for the course recording.
The general control room at the end of the classroom mainly stores the educational resource sharing platform. Through the shared platform, real-time interaction, simultaneous live broadcast, and live recording of teaching are realized between the schools to achieve the needs of remote lecture teaching, and broadcasted to the Internet in real time for teaching observation. , to carry out intelligent, fully interactive, networked teaching. And the recorded courseware supports a variety of browsers, such as: IE, safari, Google, Firefox, etc., you can play courseware without installing any additional plug-ins.
The professional recording and broadcasting classrooms in Yanqing No. 2 have achieved a high level of configuration in terms of teaching technical support, hardware equipment, and overall classroom environment design. This has also laid a solid foundation for future professional recording and broadcasting classrooms to upgrade to future classrooms. The basics.
Such a recording and recording classroom can not only complete the real-time recording of the quality class, the evaluation class, establish the school excellent/backbone teacher course library, increase the number of resources available for the school network information platform, but also realize the remote video live broadcast, for teachers, All the brother schools set up a network platform for mutual observation and reference, to achieve high-quality teaching resources sharing, and to promote the construction and application of education and teaching resources in Yanqing District.
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