Continuously changing image scaling performed by incremented pix

Details Continuously changing image scaling performed by incremented pix Continuously changing image scaling performed by incremented pix

1996-05-28

1997-07-08

Burgess, Glenton B.

Television

Format conversion

Changing number of lines for standard conversion

348581, 348448, H04N 974

Patent

active

056466960

ABSTRACT:
A pixel interpolation system provides for continuous scaling of an image, thus allowing for continuous modification of the size and aspect ratio of the image. A one-dimensional interpolator provides a weighted interpolation between two input pixels using a specified current interpolation weight. The weighting factor is then incrementally changed and further interpolations are sequentially performed across at least one dimension of the image. With one implementation of the system, the scaling across the image remains uniform while the weight varies from one pixel to the next to keep scaling constant. The interpolation operation of this invention may be performed simultaneously both vertically and horizontally.

REFERENCES:
patent: 4163249 (1979-07-01), Michael et al.
patent: 4282546 (1981-08-01), Reitmeier
patent: 4402012 (1983-08-01), Knight
patent: 4587621 (1986-05-01), DuVall
patent: 4984157 (1991-01-01), Cline et al.
patent: 5148381 (1992-09-01), Sprauge

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