Non-contact stereo display virtual teaching system

Abstract

The invention relates to a non-contact three-dimensional displaying simulative teaching system, comprising a host computer, and a back-projection device, a touch screen and a camera which are communicated with the host computer. A camera mode identifying module is arranged in the host computer, and an action model databank corresponding to relevant operations is arranged in the camera mode identifying module to identify action information in image signals collected by the camera and to inquire whether the collected action information matches the action model of the action model databank, and when the matched action model is found, the operation corresponding to the action model is executed. The back-projection device comprises a projector, a reflector and a back-projection screen. After the signal from the host computer is reflected by the reflector, the signal is projected to the back-projection screen by the projector. The system of the invention applies the back-projection system to multimedia teaching to lead the free moving of teacher before projection screen not to block the beam of projector so as to avoid the defect of front-projection, thus realizing timely and interactive control to objects and resulting in a more effective teaching course.

Description

technical field [0001] The invention belongs to the field of multimedia interactive teaching, in particular to a virtual teaching system. Background technique [0002] In the traditional teaching method, teachers can write on the blackboard at any time to attract students' attention and interact with students, and the teaching effect is good. But it takes a long time, which greatly reduces the class efficiency. At the same time, chalk dust has produced great harm to the health of teachers and students. [0003] With the development of computer technology, multimedia teaching has been more and more widely used in classroom teaching. Teachers prepare electronic courseware before class. In the classroom, they only need to use computer equipment, projectors, projection screens and audio equipment to use pictures, texts, sounds, images, and dynamic videos to vividly and vividly describe the phenomena and processes that are difficult to express in traditional teaching methods. I...

AI Technical Summary

Problems solved by technology

[0005] 1. During the lecture, the teacher must stand beside the computer to operate the courseware through the mouse or keyboard, which greatly reduces the flexibility of teaching and distances the teacher and students

[0006] 2. Classroom explanations can only be based on existing electronic documents, which cannot be changed at any time or made real-time annotations for more detailed explanations, which greatly limits the interaction between teachers, blackboards and students

[0007] 3. The current multimedia teaching generally adopts the front projection technology. When the teacher needs to stand in front of the projection screen to explain, the body will block part of the projection screen, and the light of the projector will cause serious damage to the teacher's retina.

[0008] 4. The teaching courseware is a two-dimensional display. For many three-dimensional display occasions that need to enter the structure, it cannot meet the needs of students for three-dimensional information.

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