Clustering filter method for noise filtering, scale-space filter

Details Clustering filter method for noise filtering, scale-space filter Clustering filter method for noise filtering, scale-space filter

1993-02-10

1995-06-13

Groody, James J.

Television

Image signal processing circuitry specific to television

Combined noise reduction and transition sharpening

348607, 358447, 382254, H04N 521

Patent

active

054247837

ABSTRACT:
A method is provided for image processing to remove noise and improve smoothing of nonimpulsive noise while preserving major identifying edges of the image, all of which are accomplished corresponding to a prescribed scale of interest. The method achieves nonlinear cluster filtering relying upon a maximum entropy principle. A single scale parameter governs filtering by dictating the spatial extent of neighboring data used for clustering. This, together with the signal characteristic (e.g., variation in gray scale) determines the scale parameter in the output space. The described method is unsupervised and data driven.

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