処理中

しばらくお待ちください...

設定

設定

出願の表示

1. US20140169651 - Shape-extraction method and shape-extraction system

官庁 アメリカ合衆国
出願番号 14131198
出願日 28.02.2012
公開番号 20140169651
公開日 19.06.2014
特許番号 09336598
特許付与日 10.05.2016
公報種別 B2
IPC
G06K 9/00
G物理学
06計算;計数
Kデータの認識;データの表示;記録担体;記録担体の取扱い
9印刷されたまたは手書きされた文字を読取るまたは認識するため,またはパターン,例.指紋,を認識するための方法または装置
G06T 7/00
G物理学
06計算;計数
Tイメージデータ処理または発生一般
7イメージ分析
G01N 23/04
G物理学
01測定;試験
N材料の化学的または物理的性質の決定による材料の調査または分析
23グループG01N3/00~G01N17/00,G01N21/00またはG01N22/00に包含されない波動性または粒子性放射線,例.X線,中性子線,の使用による材料の調査または分析
02放射線の材料透過によるもの
04さらに材料の画像を形成するもの
G06T 11/00
G物理学
06計算;計数
Tイメージデータ処理または発生一般
112Dイメージ発生
CPC
G06T 11/006
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
112D [Two Dimensional] image generation
003Reconstruction from projections, e.g. tomography
006Inverse problem, transformation from projection-space into object-space, e.g. transform methods, back-projection, algebraic methods
G01N 23/046
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00G01N17/00, G01N21/00 or G01N22/00
02by transmitting the radiation through the material
04and forming images of the material
046using tomography, e.g. computed tomography [CT]
G01N 2223/401
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2223Investigating materials by wave or particle radiation
40Imaging
401image processing
G01N 2223/419
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2223Investigating materials by wave or particle radiation
40Imaging
419computed tomograph
G06T 2211/424
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2211Image generation
40Computed tomography
424Iterative
G06T 2211/436
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2211Image generation
40Computed tomography
436Limited angle
出願人 Yutaka Ohtake
The University of Tokyo
Hiromasa Suzuki
Takuma Niizaka
Daiki Yamanaka
発明者 Yutaka Ohtake
Hiromasa Suzuki
Takuma Niizaka
Daiki Yamanaka
代理人 Christensen O'Connor Johnson Kindness PLLC
優先権情報 2011-150024 06.07.2011 JP
発明の名称
(EN) Shape-extraction method and shape-extraction system
要約
(EN)

An unknown surface shape of a physical object can be extracted with good precision. Image data of a projective image that has been acquired by radiation projection to an object is acquired. Next, a predetermined mesh structure is used to acquire cross-sectional images of the subject from image data of the projective images by reconstruction using tomography. Lattice points constituting the mesh structure are then moved in conformity with the surface shape of the object, based on the cross-sectional image that has been acquired by reconstruction. Reconstruction is carried out again using the mesh whose lattice point positions have been corrected. Movement on the reconstruction of the lattice points is then repeated as many times as required.