Filtering method and corresponding filtering system

Details Filtering method and corresponding filtering system Filtering method and corresponding filtering system

1997-03-10

1999-02-02

Boudreau, Leo H.

Image analysis

Image enhancement or restoration

Image filter

382224, G06K 900

Patent

active

058676058

ABSTRACT:
This relates to a filtering method for processing an image sequence, including for each image parallel binarizations of the gray levels, provided to define a tree structure made of a father node (c.sub.0.sup.1) corresponding to a background (A0) and of successive child nodes (C.sub.h.sup.k) corresponding to associated connected components (B1, D1, F1, C2, E2, G2) and a decision on the elimination or the preservation of each node (C.sub.h.sup.k), followed by an assignment of a gray level value to each picture element. This type of filtering offers the advantage of simplifying the images as well as perfectly preserving the contours, and the decision is based on various proposed simplification criteria, among which the motion-oriented one is particularly attractive.

REFERENCES:
patent: 4785344 (1988-11-01), Keith et al.
patent: 4918523 (1990-04-01), Simon et al.
patent: 5225904 (1993-07-01), Golin et al.

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