Title:
IMAGE PROCESSING METHOD AND APPARATUS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2012/168985
Kind Code:
A1
Abstract:
The respective frequency band images at different frequency bands are determined. Of the absolute values of the magnitudes of the gradient components in multiple mutually differing directions for each pixel of interest, the largest is computed as the pixel energy of the pixel of interest. Unlike prior art in which the mean of the absolute values of the magnitudes of the gradient components in multiple directions was determined, the maximum is computed as the pixel energy. Consequently, pixel energies are computed to be larger than in prior art. In other words, it is possible to perceive strong signals that correspond to structural components in the input image. Since noise reduction in the input image is performed based on pixel energy, noise processing in the input image can easily be controlled by strengthening noise reduction in areas other than areas that are perceived to be structures or weakening noise reduction in areas that are perceived to be structures. As a result, the quality of the input image can be improved.
Inventors:
BABA SHINGO (JP)
Application Number:
PCT/JP2011/003319
Publication Date:
December 13, 2012
Filing Date:
June 10, 2011
Export Citation:
Assignee:
SHIMADZU CORP (JP)
BABA SHINGO (JP)
BABA SHINGO (JP)
International Classes:
A61B6/00; A61B6/12; G06T1/00; G06T5/00
Foreign References:
| JP2004242285A | 2004-08-26 | |||
| JP2005021456A | 2005-01-27 | |||
| JP2001057677A | 2001-02-27 | |||
| JP2003534754A | 2003-11-18 |
Attorney, Agent or Firm:
SUGITANI, Tsutomu (JP)
Tsutomu Sugitani (JP)
Tsutomu Sugitani (JP)
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Claims: