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Course recording live broadcast method and system

A touch-control device and numerical technology, applied in the fields of Internet and image processing, can solve the problems of detachment of teachers, low definition of projected images, and inability to touch, and achieve high-quality real-time keying and synthesizing effects.

Pending Publication Date: 2020-11-17
顾建亮
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this mode still belongs to the traditional recording mode. The projected content is affected by the light, resulting in inaccurate touch control, and touch control cannot be realized on the green screen; in addition, the projected image in the video has low definition
[0006] In the prior art, infrared laser pens have been used to form marking content to realize interaction with projected video, but infrared laser pen marking only realizes marking interaction on teaching content, and does not make teachers out of the operation of computers
This problem can be solved if teachers can directly operate on the projected content, but for green screen keyed video, operating the projected content means that the green screen projected image can be manipulated, and the captured video must be keyed out in real time Green screen, which forms a technical threshold, there is no effective solution yet

Method used

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  • Course recording live broadcast method and system
  • Course recording live broadcast method and system
  • Course recording live broadcast method and system

Examples

Experimental program
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Embodiment 1

[0037] This embodiment provides a class recording and live broadcast system capable of touching and projecting content. The system includes an atomized green film, a projection device, a touch device, a camera device, and a data processing device.

[0038] The touch device includes several infrared emitting and receiving elements, and the infrared detection net formed by them covers the atomized green film. In this embodiment, the touch device is a transmitting tube and a receiving tube composed of an infrared emitting element and a receiving element, which are respectively assembled around the atomized green film to form a frame, so that the infrared detection net covers the atomized green film. The touch device sends the touch signal collected by the infrared detection network to the data processing device.

[0039] The data processing device of this embodiment is a computer, such as figure 1 As shown, the computer's own camera is used as the camera device. Connect the co...

Embodiment 2

[0044] The difference between this embodiment and Embodiment 1 is that the imaging device is an independent camera, and the system structure is as follows figure 2 shown. The camera can be a high-definition and 4K camera, and the SDI and HDMI video capture card can be installed on the computer to be compatible with all high-definition and 4K cameras on the market.

Embodiment 3

[0046] The difference between this embodiment and Embodiment 1 is that it also includes a Kinect somatosensory camera, and the system structure is as follows: image 3shown. The Kinect somatosensory camera can realize real-time dynamic capture, capture the teacher's gesture commands through the Kinect somatosensory camera, and develop custom gesture commands based on the programming language in advance, which can realize the use of gesture commands to control the projection screen. Using Kinect somatosensory combined with custom gesture commands, it is possible to use gesture commands to control the projection screen. Kinect for Windows SDK can use languages ​​such as C++, C# or VisualBasic to develop gesture commands, such as: zoom in, zoom out, turn pages, return, select and other common commands used by computers.

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Abstract

The invention relates to a class recording live broadcast method and system, and the system comprises an atomized green film, a projection device, a touch control device, a camera device and a data processing device, the projection device projects teaching contents to the atomized green film, and the camera device transmits a photographed atomized green film background and a teacher video to the data processing device; and the data processing device extracts a foreground, i.e., a portrait, from the shot video in real time, and synthesizes the foreground, i.e., the portrait, with the teaching content and the touch signal into a class recording live video. According to the device, a green semitransparent PDLC liquid crystal film is adopted as a green screen, clear and real-time video pushingcan be achieved under the saturated lamplight condition, and teaching interaction can be achieved in combination with an infrared touch device and a Kinect somatosensory camera.

Description

technical field [0001] The invention relates to the technical fields of the Internet and image processing, and in particular to a method and system for recording and live broadcasting of lessons. Background technique [0002] With the development of the Internet, the network classroom, as a new teaching form, is more and more widely used. In 2020, schools across the country postponed the start of school due to the novel coronavirus epidemic, and online classrooms have once again become a research hotspot. With the development of "Internet + education", the demand for course production of various excellent courses, micro-courses, MOOCs, excellent courses, online courses, and training teaching has increased, but the teaching resources that meet the requirements are insufficient, and it is costly for teachers and producers. With a lot of energy, it is difficult to achieve the unification of standardization, high-quality products, and personalized customization. [0003] Exist...

Claims

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Application Information

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IPC IPC(8): H04N21/2187H04N5/272H04N5/76H04N7/18H04N9/31G09B5/02G02F1/1334
CPCG02F1/1334G09B5/02H04N5/272H04N5/76H04N7/18H04N9/3141H04N21/2187
Inventor 顾建亮
Owner 顾建亮
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