Interactive virtual teaching aid implementation method based on image processing

The invention discloses an interactive virtual teaching aid implementation method based on image processing, and relates to the technical field of image processing, and the method comprises the following steps: S1, collecting a to-be-recognized image through a camera of a touch and talk pen, and extracting a character existence region of the to-be-recognized image; s2, processing the character existence area to obtain a key character existence area; s3, extracting a character recognition result of an area where key characters exist; and S4, projecting a character recognition result through a projector to complete interaction. According to the invention, the character existence area is precisely processed to ensure clear image quality; and finally, the processed image is subjected to screen projection, interaction is completed, the interestingness of teaching is improved, teacher operation is facilitated, the screen projection content is selected in a targeted manner, and the teaching convenience is improved.