Man-machine gesture interactive system based on electronic whiteboard

Abstract

The invention discloses a man-machine gesture interactive system based on an electronic whiteboard. The system comprises a camera for acquiring gesture images, a gesture acquisition module for preprocessing the gesture images, a gesture identification module for extracting image features of the preprocessed gesture images and classifying the image features via a data sample training support vector machine so as to identify the gestures, and an instruction conversion module for converting the identified gestures into electronic whiteboard instructions. In the system, a configurable frame for interaction between the gesture and the electronic whiteboard instruction is provided, the frame is used for mutually mapping the gestures with the electronic whiteboard instructions, and the frame is easy to configure. Simultaneously, with the system, teachers and students need not to stand between the electronic whiteboard and a projector, so that shadow on the electronic whiteboard can be avoided, several people can use the electronic whiteboard at the same time, teaching interactivity is enhanced, and participation of the teachers and the students is facilitated.

Description

technical field [0001] The present invention relates to the field of natural human-computer interaction based on computer vision. More specifically, the present invention relates to a human-computer gesture interaction system that uses gestures to control electronic whiteboard teaching by acquiring gesture images through a camera and through image recognition. Background technique [0002] The concept of human-computer interaction was first proposed in the report of the Curriculum Development Group (CDG) of ACM SIGCHI in 1992. It is a discipline that studies the design, implementation, evaluation and related main phenomena of interactive computing systems used by humans. Its research scope covers computer science, psychology, sociology, graphic design, industrial design and other disciplines. User Interface (UI) is one of the research contents of human-computer interaction. User interface (UI) is a medium and dialogue interface for transmitting and exchanging information be...

AI Technical Summary

Problems solved by technology

However, there are also some unfavorable factors in the electronic whiteboard teaching software. For example, when teachers or students are using it, they are just between the electronic whiteboard and the projector, which not only makes the teachers or students feel uncomfortable in the eyes, but also leaves a shadow on the whiteboard. ; For another example, in many cases, each electronic whiteboard is equipped with only one electronic pen, which means that only one person can use the electronic whiteboard at the same time, which hinders the communication and interaction between teachers and students, and between students and students to a certain extent. Affect the efficiency of classroom teaching

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