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Patent Searching and Data


Title:
画像処理装置及び画像処理方法
Document Type and Number:
Japanese Patent JP5732620
Kind Code:
B2
Abstract:
An image processing apparatus including: an examination image obtaining unit obtaining an examination image of an examination subject; a shift-invariant feature quantity calculating unit calculating, for each pixel, a shift-invariant feature quantity represented by predetermined base vectors, from the examination image obtained by the examination image obtaining unit; a selecting unit selecting, on the examination image, a pixel having a matching degree lower than or equal to a predetermined threshold, between (i) a relative positional relationship of classes in normal images each of which does not include a lesion site and (ii) a relative positional relationship of the classes to which shift-invariant feature quantities respectively belong in the examination image, the classes being obtained by clustering the shift-invariant feature quantities: calculated from pixels included in the normal images; and represented by the predetermined base vectors; and an output unit outputting a result of the selection performed by the selecting unit.

Inventors:
Kashu Sato
Hideto Motomura
Kazunori Kozuka
Application Number:
JP2013542300A
Publication Date:
June 10, 2015
Filing Date:
May 09, 2013
Export Citation:
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Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
A61B6/00; A61B5/055; A61B8/00; G01T1/161; G06T1/00
Other References:
JPN6014035009; Bram van Ginneken et al.: 'Automatic detection of abnormalities in chest radiographs using local texture analysis' IEEE TRANSACTIONS ON MEDICAL IMAGING Vol.21,No.2, 200202, pp.139-149, IEEE
JPN6014035013; 藤原 久永 他: '並進不変ウェーブレット縮退を用いた織物表面検査' 電気学会論文誌 D 第126巻,第1号, 200601, pp.25-34, 電気学会
JPN6014035015; 梅山 伸二 他: '高次自己相関特徴を用いた図形の回転不変特徴量の構成' 全国大会講演論文集 第45回 平成4年後期(2) , 199209, pp.323-324, 情報処理学会
JPN6014035009; Bram van Ginneken et al.: 'Automatic detection of abnormalities in chest radiographs using local texture analysis' IEEE TRANSACTIONS ON MEDICAL IMAGING Vol.21,No.2, 200202, pp.139-149, IEEE
JPN6014035013; 藤原 久永 他: '並進不変ウェーブレット縮退を用いた織物表面検査' 電気学会論文誌 D 第126巻,第1号, 200601, pp.25-34, 電気学会
JPN6014035015; 梅山 伸二 他: '高次自己相関特徴を用いた図形の回転不変特徴量の構成' 全国大会講演論文集 第45回 平成4年後期(2) , 199209, pp.323-324, 情報処理学会
Attorney, Agent or Firm:
Hiromori Arai
Eisaku Teratani
Shinichi Michisaka