Image filtering method and apparatus with interpolation accordin

Details Image filtering method and apparatus with interpolation accordin Image filtering method and apparatus with interpolation accordin

1997-07-22

2000-07-25

Rogers, Scott

Image analysis

Image enhancement or restoration

Image filter

382263, 382264, 702190, 702194, G06T 500, G06K 940, G06F 1900

Patent

active

060945117

ABSTRACT:
An image signal in filtered to provide a filtered image signal representing a filtered image, and a mapping function is determined from a predetermined arbitrary function of the image signal. The filtered image signal and the image signal are interpolated in accordance with the mapping function to produce a final image signal representing a final image. The interpolation includes adjusting an opacity of each picture element of the image signal and the filtered image signal in accordance with the mapping function. In a final image, a smoothed transition is produced between the filtered image signal and the image signal. Preferably, the determination of the mapping function is also dependent upon the filtered image signal, and the mapping function is an absolute value of a difference between the image signal and the filtered image signal.

REFERENCES:
patent: 5173948 (1992-12-01), Blackham et al.
patent: 5392137 (1995-02-01), Okubo
patent: 5392365 (1995-02-01), Steinkirchner
patent: 5432716 (1995-07-01), Lebowsky et al.
patent: 5513120 (1996-04-01), Berlad
patent: 5526446 (1996-06-01), Adelson et al.
patent: 5686960 (1997-11-01), Sussman et al.

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