Noise filter

Image analysis – Image enhancement or restoration – Image filter

Reexamination Certificate

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Details

C382S263000, C382S266000

Reexamination Certificate

active

08031963

ABSTRACT:
Provided is a system and method for processing data and images including, but not limited to separating data into a plurality of data planes; performing noise analysis to determine an average noise amplitude and noise distribution for each data plane via a gradient calculation; applying an edge mask to weaken isolated transients in one or more of the data planes; applying a noise filter using one or more levels of filtering to one or more of the data planes; and performing detail recovery combining a composite data plane and filtered and unfiltered data planes according to the noise analysis.

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patent: 2003/0095715 (2003-05-01), Avinash
Kornprobst, et al., “Nonlinear operators in image restoration”, 6 pages.
Sapiro, et al., “Geometric Partial Differential Equations and Image Analysis”, Institute of Mathematics and It's Applications, University of Minnesota, Sep. 14, 2000, pp. 1-9.
Tomais, et al., “Bilateral Filtering for Gray and Color Images”, Proceedings of the 1998 IEEE International Conference on Computer Vision, Bombay, India, 7 pages.
Tschumperle, “Fast Anisotropic Smoothing of Multi-Valued Images using Curvature-Preserving PDE's”, Equipe Image/GREYC (UMR CHRS 6072), 20 pages.

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