Title:
IMAGE PROCESSOR, RADIATION TOMOGRAPHY APPARATUS AND PROGRAM
Document Type and Number:
Japanese Patent JP2015205019
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress image noise while maintaining an image representing a micro structure of an object in an image obtained by radiation tomography.SOLUTION: An image processor is provided, which includes extraction means for extracting radiation high absorption areas by threshold processing of a pixel value in an image obtained by radiation tomography of an object, detection means for detecting a radiation high absorption area whose size is at a prescribed level or below among the extracted radiation high absorption areas as an area of a micro structure, and processing means for performing first noise reduction of an area of a non-micro structure different from the area of the micro structure, and performing second noise reduction whose noise reduction effect is smaller than that of the first noise reduction of the area of the micro structure or performing prescribed processing that does not substantially perform noise reduction among all areas of the image.
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Inventors:
NUKUI MASAYASU
Application Number:
JP2014087212A
Publication Date:
November 19, 2015
Filing Date:
April 21, 2014
Export Citation:
Assignee:
GE MED SYS GLOBAL TECH CO LLC
International Classes:
A61B6/03
Domestic Patent References:
| JPH039730A | 1991-01-17 | |||
| JP2007037906A | 2007-02-15 | |||
| JP2006106903A | 2006-04-20 | |||
| JPH0452872A | 1992-02-20 | |||
| JP2002024822A | 2002-01-25 | |||
| JP2005349079A | 2005-12-22 | |||
| JPH1119082A | 1999-01-26 | |||
| JP2009226141A | 2009-10-08 |
Foreign References:
| WO2005110232A1 | 2005-11-24 | |||
| WO2009128213A1 | 2009-10-22 | |||
| WO2012073769A1 | 2012-06-07 |
Attorney, Agent or Firm:
Arakawa Satoshi
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