A human-computer interaction system and its interaction method based on oculoelectric coding

Abstract

The invention discloses a human-computer interaction system and an interaction method based on electro-oculogram coding. The system includes a electro-oculogram signal acquisition module, an electro-oculogram signal preprocessing module, an eye movement feature extraction and eye movement direction classification module connected in sequence, The electro-oculogram coding module and the character output display module; the interaction method is: S1, the electro-oculogram signal acquisition module is used for the acquisition of eye movement electrical signals and amplifies and filters them; S2, the electro-oculogram signal preprocessing module removes unconscious blink artifacts and smoothes processing, extracting the eye movement segment from the electro-oculogram signal, and obtaining the pre-processed electro-oculogram signal; The electro-oculogram signal is processed for feature classification to obtain the electro-oculogram signal of eight directions; S4, the electro-oculogram encoding module assigns the electro-oculogram signal of eight directions to a binary code, and S5, the character output display module outputs corresponding characters according to the binary code.

Description

technical field [0001] The invention belongs to the technical field of intersecting fields of biomedicine and informatics, and in particular relates to a human-computer interaction system and an interaction method based on oculoelectric coding. Background technique [0002] Personal computers are becoming increasingly popular in workplaces as well as in ordinary homes. Traditional computer systems use keyboard and mouse as the main input and output devices. At present, the human-computer interaction mode adopted by most computer systems is: keyboard and mouse-monitor-keyboard and mouse. Although this mode of human-computer interaction can meet the needs of most computer users, traditional input devices such as mouse and keyboard obviously cannot be used normally for groups with severe limb disabilities and motor nervous system damage. [0003] In daily life, most elderly people who cannot take care of themselves are unable to move their hands and feet conveniently, and eve...

AI Technical Summary

Problems solved by technology

The traditional human-computer interaction system based on oculoelectric control uses a virtual keyboard, which requires multiple combinations of eye movements to complete the output of a single character, and the rate of character output is not high.

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