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Graphic Reconstruction of Visual Attention Guiding Information in Video Open Classes

CHEN Yong-yi(Information and Network Center,Xiamen University,Xiamen,Fujian 361005,China)  
Screen information consists of information displayed by the projector and visual attention guiding information.At pr esent,in classroom course videos,including videos of open lessons,almost all visual-attention guiding information sent out by the teacher is neglected,and the lack of screen information confuses the audience.Setting up screen cameras can provide ac curate screen positions,times of entry and exit,and running duration for the textual and graphic reconstruction of visual-attent ion guiding information.In synchronized video editing,the various video expression methods in the nonlinear editing system t o enable the visual-attention guiding information sent out by the teacher to exceed the on-site presentation methods,allowing the audience in distance learning to capture the information accurately,vividly and immediately,thereby achieving the purpose of remote transmission of full screen information.
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