A non-blocking processing method for teaching blackboard writing

Abstract

The invention discloses a non-blocking processing method for teaching blackboard writing. First, the original recorded video information is obtained, and the original recorded video information is the video information when recording the blackboard; secondly, the blackboard area in the recorded video information is extracted, and the Effective edge; secondly, carry out perspective transformation to the blackboard area and solve the transformation matrix; secondly, transform the original picture information according to the transformation matrix to obtain the blackboard area picture information; finally, carry out unoccluded processing to the blackboard area picture information; through the present invention After extracting the effective edge, performing perspective transformation and non-occlusion processing, the recorded video information can be clearly processed, so that the recorded video can be transformed into a complete and clear blackboard screen; and the blackboard screen video information can be removed The hands and other occluders in the classroom are convenient for students to study clearly and provide students with a good learning experience environment; they will not affect their learning.

Description

technical field [0001] The invention belongs to the field of information processing, and relates to recording video information, in particular to a non-blocking processing method for teaching blackboard writing. Background technique [0002] In the traditional teaching process, the general teacher conducts blackboard teaching on the blackboard. This traditional method cannot store and share blackboard information; and the existing multimedia classrooms are equipped with a set of projectors to project and display courseware for teaching. Projectors are currently widely used in homes, offices, schools and entertainment venues, depending on the working method. , There are different types such as CRT, LCD, DLP, etc.; and currently, projectors are often used in the teaching process; and with the development of Internet information, teaching videos are often recorded and uploaded to the Internet for sharing, so as to share with learners Review. [0003] After the existing teachi...

AI Technical Summary

Problems solved by technology

This traditional method cannot store and share blackboard information; and the existing multimedia classrooms are equipped with a set of projectors to project and display courseware for teaching. Projectors are currently widely used in homes, offices, schools and entertainment venues, depending on the working method. , There are different types such as CRT, LCD, DLP, etc.; and currently, projectors are often used in the teaching process; and with the development of Internet information, teaching videos are often recorded and uploaded to the Internet for sharing, so as to share with learners review

[0003] After the existing teaching video is recorded, the recorded video is usually blocked by the shooting angle or the teacher's arm when it is uploaded through the network, resulting in partial occlusion of the video, which affects the experience of the learners. and have a certain impact on learning;

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