| 摘要 |
Original image data items a1, a2, . . . aN with respect to a horizontal or vertical row of pixels in a two-dimensional image are obtained and then smoothed by converting an to a'n which is the median value of an (a'n-1+ alpha ), and (a'n-1- alpha ) (where a'n-1 is a converted data item which is produced by converting the original image data item an-1 to a median value, and alpha is a constant), converting an to a''n which is the median value of an, a''n+1+ alpha ), and (a''n+1- alpha ) (where a''n+1 is a converted data item which is produced by converting the original image data item an+1 to a median value), and determining the means value An of the converted data items a'n and a''n with respect to the same pixel and employing the determined mean value An as smoothed data.
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