Title:
IMAGE PROCESSING APPARATUS, X-RAY IMAGE DIAGNOSIS APPARATUS AND IMAGE PROCESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2010/150687
Kind Code:
A1
Abstract:
Displaying digital X-ray image data with a constant image quality is achieved by performing noise reduction without dependence on the S/N characteristic and further without causing the edge portions of image signals to be blurred. For this purpose, a medical image is raster-scanned and read (S301); a similarity threshold value (P) for which the S/N characteristic has been taken into account is used to determine whether the component is of an image signal or of noise for each of a plurality of pixels of interest (S302-S304); and either a process (S305) following a determination that the component is of an image signal or a process (S306) following a determination that the component is of noise is performed for each pixel of interest.
Inventors:
SHIGEMURA SHUSAKU (JP)
SUZUKI KATSUMI (JP)
SUZUKI KATSUMI (JP)
Application Number:
PCT/JP2010/060179
Publication Date:
December 29, 2010
Filing Date:
June 16, 2010
Export Citation:
Assignee:
HITACHI MEDICAL CORP (JP)
SHIGEMURA SHUSAKU (JP)
SUZUKI KATSUMI (JP)
SHIGEMURA SHUSAKU (JP)
SUZUKI KATSUMI (JP)
International Classes:
A61B6/00; G06T1/00; G06T5/00
Foreign References:
| JP2008124976A | 2008-05-29 | |||
| JPH11275579A | 1999-10-08 | |||
| JP2007244675A | 2007-09-27 | |||
| JP2005151385A | 2005-06-09 | |||
| JP2004503030A | 2004-01-29 |
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