| Summary: | 碩士 === 義守大學 === 資訊工程學系 === 105 === The jitter of eyes will affect the stability of eye movement.Therefore,in this study proposed the new smoothing filter ‘threshold-based Savitzky-Golay smoothing filter’to improve the control stability. The average euclidean distance of jitter of eyes be a threshold.
In these study, ten subjects participated the nine points fixation experiment and Chinese characters typing by the screen keyboard,the performance of the controlstability of eye movement examine tracking error.The tracking error was obtained by the root mean square error to the mismatch between the target signal and cursormovement.the performance of proposed smoothing filter (21 points, 41points, 61 points) are better than S-G Smoothing Filter by 12.7%、20%、19.5%.The screen keyboard has four types of keypads size,such as dynamic enlarge keypads、80×80(pixels)、60×60(pixels)、40×40 (pixels). The results of finished rate used proposed smoothing filter show that dynamic enlarge keypads are better than the other types by 6.8%、8.1%、28.4%.
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