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System and method for video recording of lectures

An imaging and sub-system technology, applied in the parts of TV systems, image communication, teaching aids for electrical operation, etc., can solve the problems of fixed lens, monotonous personal characteristics, and inability to highlight the personal style of teachers, achieving stable, Avoid redundant effects

Active Publication Date: 2017-02-08
BEIJING SHINEON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing teaching video recording system does not have the concept of teaching lens language when it is developed, and the setting of the lens is often relatively fixed, which cannot highlight the teacher's personal style, and the personal characteristics appear monotonous and boring

Method used

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  • System and method for video recording of lectures
  • System and method for video recording of lectures
  • System and method for video recording of lectures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment is a system for video recording of lectures, such as figure 1 shown. This embodiment includes: a camera subsystem, a tracking subsystem, a recording subsystem, and an editing subsystem.

[0032] The camera subsystem includes: panoramic camera 6, teacher tracking camera 5, teacher auxiliary tracking camera 4, student tracking camera 1, student auxiliary tracking cameras 2 and 3, sound acquisition device, PPT or interstitial video playback device. The arrangement of each camera in the classroom of the camera subsystem of this embodiment is as follows: figure 2 shown.

[0033] The tracking subsystem includes: an image analysis device, a camera control device, and a trigger device. The recording subsystem includes: a collection device, a switching device, and a recording device. The editing subsystem includes: a template setting device, a color cast correction device, a noise elimination device, and a title and credits setting device. The panoramic cam...

Embodiment 2

[0046] This embodiment is a method for video recording of lectures using the system described in Embodiment 1. The flow chart is as follows image 3 shown. The steps of the method described in this embodiment are as follows:

[0047] Steps for setting a template: it is used for the teacher to select a recording template suitable for his own teaching habits in the template setting device before starting to record the teaching video.

[0048] The steps of the whole scene shooting: use the panoramic camera to take a full shot of the whole classroom, so as to find the central shooting content. When filming begins, it should first find the central camera subject, such as a teacher or a student. Therefore, a panoramic image is required.

[0049] Panoramic image analysis steps: the image analysis device in the tracking server analyzes the panoramic images of the entire classroom to find objects that need to be tracked in the central camera content. The analysis of the panoramic i...

Embodiment 3

[0058] This embodiment is an improvement of the second embodiment, and is a refinement of the teacher's safety frame policy in the second embodiment. The teacher's safety box policy described in this embodiment includes the following sub-steps:

[0059] Calibration sub-step: collect the teacher's current image through the acquisition device; in the image, mark a closed polygon as the teacher's walking tracking area, and mark one or more closed polygons as the teacher's access to the platform area. The area calibration is carried out on the 4m×8m podium image captured by the auxiliary camera. The calibration area is a closed polygon of any shape, and the teacher can calibrate multiple areas.

[0060] Teacher position detection: use RGB color to HSV color space method, background modeling and update technology, frame difference method and background subtraction method combined tracking technology, morphological filtering, template matching and color matching recognition technolo...

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Abstract

The invention relates to a system and a method for recording a teaching video. The system comprises a camera sub-system, a tracking sub-system, a recording sub-system, an editing sub-system. The method comprises the steps of: setting a template; shooting in the whole scene; analyzing a panoramic picture; sending out a command of starting up tracking; tracking; acquiring; triggering; switching; recording; and editing. A recording template and an intelligent triggering and switching device adopted in the invention can remove useless scenes efficiently, edit the teaching video based on a teaching scene language, carry out multiple after-treatments such as automatic color cast adjustment and de-noising by using the editing sub-system, and also can add individual openings and endings, so that automatic edition of the teaching video is realized, and a person without any professional training can edit well. The method for recording the teaching video realizes teacher tracking stability as a safety frame strategy is adopted, removes useless scenes of excessive actions of students by using a student action anti-interference strategy, and avoids redundancy of the teaching video.

Description

technical field [0001] The present invention relates to a system and method for recording teaching video, which is a recording system and method for classroom teaching video, and a teaching video recording system and method that uses teaching lens language to automatically record and automatically and simply edit in real time. Background technique [0002] With the rapid development of video open classes, campus open classes, and micro-teaching evaluations, there are more and more demands for recording classroom teaching films, and the quality requirements for such teaching films are also getting higher and higher. The existing teaching film recording system for classroom teaching pays attention to the simple recording of video images, and it only needs to be able to record the sound and video of the teacher teaching. With the development of the teaching film recording system, people feel that the teaching film recorded by the existing classroom teaching teaching film record...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/76G09B5/06H04N5/262
Inventor 王宁吴鹏崔新
Owner BEIJING SHINEON TECH
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