Fuzzy logic device for image noise reduction

Details Fuzzy logic device for image noise reduction Fuzzy logic device for image noise reduction

1995-08-24

1998-05-05

Coles, Sr., Edward L.

Image analysis

Image enhancement or restoration

382260, 382264, 382266, 358443, 358447, 358463, 358455, H04N 140, H04N 138

Patent

active

057487960

ABSTRACT:
A fuzzy device for image noise reduction, includes an interface adapted to retrieve the gray level of a pixel to be processed of an image and of neighbouring pixels; a difference circuit connected to the interface and adapted to generate a difference of the gray levels between said neighbouring pixels and said pixels to be processed; a fuzzy flat area smoothing circuit connected to the difference circuit and adapted to perform a low-pass smoothing of an almost homogeneous region defined by said pixel and by said neighbouring pixels; an edge preserving smoothing circuit connected to the difference circuit and adapted to perform low-pass filtering on a high-frequency information region defined by the pixel and by the neighbouring pixels; a region voter circuit connected to the interface and adapted to give a measure for considering whether the region defined by the pixel and the neighbouring pixels is almost homogeneous; and a soft switching circuit connected to the outputs of the smoothing circuit and adapted to perform the weighting of the outputs of the smoothing circuit on the basis of the measure.

REFERENCES:
patent: 4953114 (1990-08-01), Sato
patent: 5023919 (1991-06-01), Wataya
patent: 5111285 (1992-05-01), Fujita et al.
patent: 5134667 (1992-07-01), Suzuki
patent: 5329599 (1994-07-01), Curry et al.
patent: 5339365 (1994-08-01), Kawai et al.
patent: 5343283 (1994-08-01), van Dorsselaer et al.
patent: 5381490 (1995-01-01), Shin
patent: 5383036 (1995-01-01), Mailloux et al.
patent: 5442462 (1995-08-01), Guissin
patent: 5513280 (1996-04-01), Kawamura
European Search Report from European Patent Application No. 94830408.4, filed Aug. 25, 1994.
Proceeding Of the International Conference On Fuzzy Systems, Mar. 8-12, 1992, San Diego (US): IEEE Press, New York, pp. 561-568, Fabrizio Russo "A User-Friendly Research Tool For Image Processing With Fuzzy Rules".
Proceedings Of Eusipco-92 Sixth European Signal Processing Conference, Brussels, Belgium, Aug. 24-27, 1992: Elsevier, Amsterdam, pp. 1413-1416, Fabrizio Russo, et al. "Working On Image Data Using Fuzzy Rules".

Affiliated with

Also associated with

Rating

Fuzzy logic device for image noise reduction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fuzzy logic device for image noise reduction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuzzy logic device for image noise reduction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-64276