Method of smoothing image data

Details Method of smoothing image data Method of smoothing image data

1987-03-26

1989-01-24

Harkcom, Gary V.

Boots, shoes, and leggings

364518, 358 36, 358167, 382 43, G06F 1568

Patent

active

048005118

ABSTRACT:
Original image data items a.sub.1, a.sub.2, . . . a.sub.N with respect to a horizontal or vertical row of pixels in a two-dimensional image are obtained and then smoothed by converting a.sub.n to a'.sub.n which is the median value of a.sub.n (a'.sub.n-1 +.alpha.), and (a'.sub.n-1 -.alpha.) (where a'.sub.n-1 is a converted data item which is produced by converting the original image data item a.sub.n-1 to a median value, and .alpha. is a constant), converting a.sub.n to a".sub.n which is the median value of a.sub.n, a".sub.n+1 +.alpha.), and (a".sub.n+1 -.alpha.) (where a".sub.n+1 is a converted data item which is produced by converting the original image data item a.sub.n+1 to a median value), and determining the means value A.sub.n of the converted data items a'.sub.n and a".sub.n with respect to the same pixel and employing the determined mean value A.sub.n as smoothed data.

REFERENCES:
patent: 4229797 (1980-10-01), Ledley
patent: 4490851 (1984-12-01), Gerhart et al.
patent: 4553165 (1985-11-01), Bayer
patent: 4603430 (1986-07-01), Sacks
patent: 4651287 (1987-03-01), Tsao
patent: 4689666 (1987-08-01), Hatanaka
patent: 4698768 (1987-10-01), Thuy et al.
patent: 4715005 (1987-12-01), Heartz

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