Image analysis – Image enhancement or restoration – Image filter
Reexamination Certificate
2005-02-15
2005-02-15
Bali, Vikkram (Department: 2623)
Image analysis
Image enhancement or restoration
Image filter
Reexamination Certificate
active
06856703
ABSTRACT:
A collection of samples Si, representing, for example, an image is filtered in the following manner. A distinction is made between valid samples Si+ and non-valid samples Si− on the basis of auxiliary data AUX. Filtered samples So, which are associated with the valid samples Si+, are derived exclusively on the basis of the valid samples Si+. Accordingly, it is prevented that the filtered samples, which are associated with the valid samples, are mixtures of valid and non-valid samples. Such mixtures cause distortion, in particular if the valid and non-valid samples substantially differ in value.
REFERENCES:
patent: 5231680 (1993-07-01), Williams
patent: 5422827 (1995-06-01), Niehaus
patent: 5694490 (1997-12-01), Howell et al.
patent: 5887197 (1999-03-01), Isomura
Bali Vikkram
Koninklijke Philips Electronics , N.V.
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