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- W2378628259 abstract "The aim of this work is to provide a human-computer interaction system for persons with some physical disabilities.It allows subjects to control devices by controlling the gaze of direction the eye.A human-computer interface which displays targets repeating moving between the center and eight around directions was designed.The system could detecte the directions of the eyes movement by analyzing the horizontal and vertical EOG when the eyes follow on the certain moving targets.First,the EMG and blink interference were removed from the horizontal and vertical EOG using the mathematical morphology processing.Next,the feature vectors of different eye motion directions were extracted by principal component analysis(PCA).At last,the smoothed EOG signals were projected onto the feature vectors to detect the directions of the eye movement which were corresponding to a moving target.Subjects could operate the speller system in accordance with one's wish and input a character.A total of 8 subjects' results were analyzed and the average information rate(ITR) was 25.7 bits/min.The combination of mathematical morphology and principal component analysis methods was feasible,effective and could extract the information about the directions of the eyes movement.Moreover,the information could be transformed into commands to control external devices effectively." @default.
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- W2378628259 date "2012-01-01" @default.
- W2378628259 modified "2023-09-27" @default.
- W2378628259 title "Research of Speller System Based on EOG" @default.
- W2378628259 hasPublicationYear "2012" @default.
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