Abstract

インパルス性雑音除去フィルタの計算高速化手法
江丸貴紀，田中一男，土谷武士
日本機械学会論文集C編， vol.70，no.689，pp.62-68 (2004).

Abstract
In this paper, we propose the fast calculating method for eliminating the impulsive noise by using the non-linear digital filter, ESDS. In our research, we have proposed a new technique to estimate the smoothed value and the differential value by using sliding mode system (ESDS). It works effectively to eliminate the impulsive noise. The system of it is represented by differential equations, and we have used Runge-Kutta (RK) methods in order to solve them. RK methods require heavy calculation, and it requires high-performance processor in order to calculate rapidly. Consequentially, by using the knowledge of the phase plain, it becomes possible to reduce the calculated amount of our proposed method. The experimental results show the our filter with RK method needs plenty of time for calculation, but that with the fast calculating method needs little time.

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