Method and apparatus for reducing contouring in video compressio

Details Method and apparatus for reducing contouring in video compressio Method and apparatus for reducing contouring in video compressio

1994-07-18

1997-07-22

Johns, Andrew

Image analysis

Image enhancement or restoration

Image filter

382274, G06K 936

Patent

active

056510780

ABSTRACT:
An encoding method and apparatus for conditioning video signal to reduce contouring in images reproduced from compressed video signal involves preconditioning the video signal, prior to completion of compression, to effectively amplify noise in portions of the video signal representing relatively smooth image areas. In an exemplary embodiment, a memory is programmed at respective address locations to remap amplitude values of a digitized signal applied as addresses to the memory. The programming is arranged to enlarge a range of lower amplitude values, and to effectively pass higher amplitude values unaltered.

REFERENCES:
patent: 4613986 (1986-09-01), Ataman et al.
patent: 4677479 (1987-06-01), Hattori et al.
patent: 5134667 (1992-07-01), Suzuki
patent: 5224177 (1993-06-01), Doi et al.
patent: 5224178 (1993-06-01), Madden et al.
patent: 5245428 (1993-09-01), De With et al.
patent: 5388168 (1995-02-01), Sakashita et al.
patent: 5392365 (1995-02-01), Steinkirchner
patent: 5416606 (1995-05-01), Katayama et al.

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