外文翻译---改进二维中值滤波器在线脉冲噪声的抑制(编辑修改稿)

外文翻译---改进二维中值滤波器在线脉冲噪声的抑制(编辑修改稿)内容摘要：

is that when Min[S] or Max[S] are also corrupted by impulse noise, Min[S] or Max[S] is equal to P5,Equation(1)fails to perform the desired filtering overe this limitation following modifications in the replacement strategy of Equation(1),are proposed. Output (X,Y)= Max(P2,P8)if P5≥ Max[S] P5 if Min [s]＜ P5＜ Max[S] Min(P2,P8) if P5≤ Max[S] (3) It has been observed that more than 7080% points in an image,the gray level diatances of P5 from(P2 or P8) and from Max[S] are below is shown in for the image‘ LENA ’ .This fact is used to further reduce unnessary replacements,thereby reducing the bluring of the taking into considertion of Figure(3) can be further modified as Output (X,Y)= Max(P2,P8)if P5Max[S]≥ 16 Max(P2,P8) if Min [s]P5≥ 16 P5 otherwise （ 4） Equation 4 indicates that replacing action takes place only when the distance between P5 and Min[S] or Max[S] is no smaller than 16. This strtegy thus avoids the necessary replacements and reduces blurring of the ， it can be implemented using simple parators and subtractors. Gray level distances . Gray level distances between central point and its neighboring points for the image ‘ LENNA’ Ⅲ .RESULTS Figure 3 shows the original image ‘ LENNA’ and Figure 4 shows the same image when corrupted with impulse noise. Results of median filter and the proposed。