Adaptive interpolation method and apparatus using correlation de

Details Adaptive interpolation method and apparatus using correlation de Adaptive interpolation method and apparatus using correlation de

1992-06-11

1994-09-13

Chin, Stephen

Image analysis

Histogram processing

For setting a threshold

348448, H04N 514

Patent

active

053475992

ABSTRACT:
An interpolation apparatus for preventing image deterioration caused by correlation detection errors. The apparatus comprises a calculation means for obtaining the arithmetic mean of pixels on the scan lines above and below the line being interpolated, a correlation value detection means for obtaining the correlation value of the pixels, a setting means for outputting the reference value of correlation, a comparison means for outputting a binary signal set, a determination means for determining the interpolation line, and a selection means for selecting and passing the output of the calculation means.

REFERENCES:
patent: 4831435 (1989-05-01), Song et al.
patent: 4985764 (1991-01-01), Sato
patent: 5019903 (1991-05-01), Dougall et al.
S. Kogyo, Photographic Industries, vol. 47, No. 486, pp. 107-108 (Oct. 1989).

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