Method and apparatus for providing intra-field interpolation of

Details Method and apparatus for providing intra-field interpolation of Method and apparatus for providing intra-field interpolation of

1993-06-22

1995-08-22

Kostak, Victor R.

Television

Format conversion

Line doublers type

348452, 348910, H04N 701

Patent

active

054444934

ABSTRACT:
Visual artifacts, normally characteristic of interpolated images, are minimized by a method of adaptive interpolation in which pixel values of a current line to be interpolated are determined from respective values of vertically adjacent pixels of adjacent lines in a current field. The values are adaplively weighted according to one or more gradients of respectively located pixel values of one or more temporally adjacent fields thereby providing an interpolated image having improved sharpness, no temporal lag, and no switching artifacts.

REFERENCES:
patent: 4937667 (1990-06-01), Choquet et al.
patent: 4941045 (1990-07-01), Birch
patent: 5027201 (1991-06-01), Bernard
patent: 5081532 (1992-01-01), Rabii
patent: 5175619 (1992-12-01), Willis
patent: 5260786 (1993-11-01), Kawashima et al.

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