Image analysis – Image enhancement or restoration – Image filter
Patent
1994-04-05
1998-02-03
Boudreau, Leo
Image analysis
Image enhancement or restoration
Image filter
382261, 348627, G06K 940
Patent
active
057153353
ABSTRACT:
In a noise reduction filter having a filter coupled to receive a plurality of input signal samples (.smallcircle.,.sym.) and furnishing noise-reduced signal samples, and a delay circuit coupled to the output of the filter and which furnishes a plurality of delayed noise reduced signal samples (X) to a further input of the filter, the samples (Pn.sub.1 . . . Pn.sub.n) applied to the filter are not directly neighboring samples.
REFERENCES:
patent: 4504864 (1985-03-01), Anastassiou et al.
patent: 4549212 (1985-10-01), Bayer
patent: 4573070 (1986-02-01), Cooper
patent: 4962542 (1990-10-01), Klees
patent: 5282268 (1994-01-01), Mieras et al.
patent: 5343254 (1994-08-01), Wada et al.
patent: 5359674 (1994-10-01), van der Wal
patent: 5384865 (1995-01-01), Loveridge
patent: 5446501 (1995-08-01), Takemoto et al.
"Symmetrical Recursive Median Filters Application to Noise Reduction and Edge Detection", by Balon et al, Signal Processing V: Theories and Applications, 1990, pp. 813-816.
"Extended-Order Statistic Filter and Evaluation of Noise Reduction Performance", by Fujii et al, Electronics and Communications in Japan, Part 3, vol. 74, No. 5, 1991, pp. 1-11.
Biezen Paul W. A. C.
De Haan Gerard
Kwaaitaal-Spassova Tatiana G.
Ojo Olukayode A.
Boudreau Leo
Kelley Christopher S.
U.S. Philips Corporation
LandOfFree
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 Noise reduction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise reduction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-669798