Image analysis – Histogram processing – For setting a threshold
Patent
1997-03-24
1999-07-13
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382168, 382261, G06K 900, G06K 938, G06K 940
Patent
active
059237759
ABSTRACT:
The present invention efficiently and quickly estimates signal (code value) dependant noise in an image and subsequently reduces that noise. The digital image is segmented both according to code value and into smooth vs. textured regions. Noise estimates taken from smooth regions are used to model noise as a function of code value. The predictions of the model are used to tone noise reduction in all areas of the image according to the appropriate code value.
REFERENCES:
patent: 5091972 (1992-02-01), Kwon et al.
patent: 5533149 (1996-07-01), Kaplan et al.
patent: 5563963 (1996-10-01), Kaplan et al.
patent: 5724454 (1998-03-01), Shimazu et al.
patent: 5764307 (1998-06-01), Ozcelik et al.
Ballard, D.H. and Brown, C.M., Computer Vision, Prentice Hall, 1982, pp. 76-78.
Abdou, I.E., "Quantitative Methods of Edge Detection," USCIPI Report 830, Image Processing Institute, University of Southern California, Jul. 1978.
Olsen, S.I., "Estimation of Noise in Images: An Evaluation, " CVGIP: Graphical models and Image Processing, vol. 55, No. 4, Jul. 1993, pp. 391-323.
Lee, J.S. "Refined Filtering of Image Noise Using Local Statistics, ", Computer Vision Graphics Image Processing, 15, 1981, pp. 380-389.
Mastin, G.A., "Adaptive Filters for Digital Noise Smoothing, and Evaluation, " Computer Vision Graphics and Image Processing, 31, 1985, pp. 103-121.
Meer, P., Jolion, J., and Rosenfeld, A., "A Fast Parallel Algorithm for Blind Estimation of Noise Variance, " IEEE Trans. Pattern Anal. mach. Intelligence, 12(2), 1990, pp. 216-223.
Gaborski Roger Stephen
Pawlicki Thaddeus Francis
Snyder Patricia D
Boudreau Leo H.
Eastman Kodak Company
Noval William F.
Novik Dmitry A.
LandOfFree
Apparatus and method for signal dependent noise estimation and r does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for signal dependent noise estimation and r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for signal dependent noise estimation and r will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2284465