Method and apparatus for processing an input image

Details Method and apparatus for processing an input image Method and apparatus for processing an input image

1997-03-12

2000-01-25

Mancus, Joseph

Image analysis

Image enhancement or restoration

Image filter

382270, 382275, G06K 940

Patent

active

060185961

ABSTRACT:
A method or apparatus for processing an input frame of image data comprising converting the input frame into a plurality of output frames, the spatial frequency spectrum of each of said plurality of output frames being that of a respective predetermined frequency band of the spatial frequency spectrum of the input frame and applying separately to at least one of said plurality of output frames a respective gain.

REFERENCES:
patent: 4578667 (1986-03-01), Hollister
patent: 4691292 (1987-09-01), Rothweiler
patent: 4962426 (1990-10-01), Naoi et al.
patent: 5754222 (1998-05-01), Daly et al.
Electronics Engineers Handbook, by Donald G. Fink & Donald Christiansen, 3-edition, p. 13-4, 1989.
Image Processing Handbook, by John C. Russ, 2-edition, p. 318, 1995.

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