Noise reduction method, apparatus, and program for digital...

Image analysis – Image enhancement or restoration – Artifact removal or suppression

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C382S262000, C382S264000

Reexamination Certificate

active

06907144

ABSTRACT:
A method of processing a digital image channel to remove noise, includes the steps of: identifying a pixel of interest; calculating a noise reduced pixel value from a single weighted average of the pixels in a sparsely sampled local region including the pixel of interest; replacing the original value of the pixel of interest with the noise reduced pixel value; and repeating these operations for all of the pixels in the digital image channel.

REFERENCES:
patent: 4446484 (1984-05-01), Powell
patent: 4463381 (1984-07-01), Powell et al.
patent: 4731865 (1988-03-01), Sievenpiper
patent: 5343309 (1994-08-01), Roetling
patent: 5568558 (1996-10-01), Ramm et al.
patent: 5671264 (1997-09-01), Florent et al.
patent: 4329672 (1994-12-01), None
patent: 0 893 783 (1999-01-01), None
patent: 0 961 224 (1999-12-01), None
Normille. “Analysis and Application of Adaptive Noise Reduction Using Sparse Filters.” 6th Multidimensional signal Processing Workshop, Sep. 1989, pp. 160-161.
Inkinen et al. “Base Line Normalization of High Energy Physics Detector Signals Using Sparse Median operators.” IEEE Winter Workshop on Nonlinear Digital Signal Processing, 1993, pp. 4.1-3.1 to 4.1-3.6.
Akarun et al. “Adaptive Decimated Median Filters for Image Processing.” ICASSP-93, IEEE Int. Conf. on Acoustics, Speech, and Signal Processing, Apr. 1993, vol. 5, pp. 69-72.
Jong-Sen Lee, “Digital Image Smoothing and the Sigma Filter”,Computer Vision, Graphics, and Image Processing, No. 24, 1983, pp. 255-269.
G. R. Arce & M. P. McLoughlin, “Theoretical Analysis of the Max/Median Filter”,IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-35, No. 1, Jan. 1987, pp. 60-69.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Noise reduction method, apparatus, and program for digital... 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 method, apparatus, and program for digital..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise reduction method, apparatus, and program for digital... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3498932

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.