Method, apparatus and program for noise suppression

Details Method, apparatus and program for noise suppression Method, apparatus and program for noise suppression

2011-03-22

2011-03-22

Bhatnagar, Anand (Department: 2624)

Image analysis

Image enhancement or restoration

Artifact removal or suppression

C348S607000, C358S003260

Reexamination Certificate

active

07912316

ABSTRACT:
A band-limited image signal generating unit decomposes an input image signal into a plurality of band-limited image signals, each representing an image having different frequencies. An index value obtaining unit obtains an index value indicating a level of noise suppression based on data representing spatial frequencies as well as an evaluation value representing local contrast at a pixel of interest in band-limited images and data representing an X-ray dose. A noise suppression processing unit performs noise suppression processing on each pixel of each of band-limited images based on the index value. A processed image generating unit obtains a processed image, in which noise has been suppressed, by adding signals obtained by subtracting processed band-limited image signals, of which noise has been suppressed, from the band-limited image signals together, extracting a noise image signal, and subtracting the noise image signal from the input image signal.

REFERENCES:
patent: 5461655 (1995-10-01), Vuylsteke et al.
patent: 7386158 (2008-06-01), Yamada
patent: 2002/0071600 (2002-06-01), Yamada
patent: 10-105701 (1998-04-01), None
patent: 2002-125153 (2002-04-01), None
Rafael C. Gonzalez, “Digital Image Processing”, 2002, Prentice Hall, 2, 230-231.
Rafael C. Gonzalez, “Digital Image Processing”, 2002, Prentice Hall, pp. 132, 230, 231, 396, 399.
Baxes, “Digital Image Processing”, Sep. 1, 1994, Wiley, 1 ed, p. 441.

Affiliated with

Also associated with

Rating

Method, apparatus and program for noise suppression does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method, apparatus and program for noise suppression, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method, apparatus and program for noise suppression will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2776599