Filtering a collection of samples

Details Filtering a collection of samples Filtering a collection of samples

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

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