Processing

Please wait...

Settings

Settings

1. WO2000042566 - APPARATUS AND METHOD FOR PROCESSING OBJECTS IN COMPUTED TOMOGRAPHY DATA USING OBJECT PROJECTIONS

Publication Number WO/2000/042566
Publication Date 20.07.2000
International Application No. PCT/US1999/030844
International Filing Date 23.12.1999
Chapter 2 Demand Filed 19.07.2000
IPC
G06K 9/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
CPC
G06K 2209/09
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
2209Indexing scheme relating to methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
09Recognition of patterns representing particular kinds of hidden objects, e.g. weapons, explosives, drugs
G06K 9/00201
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
00201Recognising three-dimensional objects, e.g. using range or tactile information
G06K 9/00771
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
00624Recognising scenes, i.e. recognition of a whole field of perception; recognising scene-specific objects
00771Recognising scenes under surveillance, e.g. with Markovian modelling of scene activity
Applicants
  • ANALOGIC CORPORATION [US/US]; 8 Centennial Drive Centennial Industrial Park Peabody, MA 01960, US
Inventors
  • CRAWFORD, Carl, R.; US
  • BECHWATI, Ibrahim, M.; US
  • SIMANOVSKY, Sergey; US
  • HIRAOGLU, Muzaffer; US
Agents
  • KUSMER, Toby, H. ; McDermott, Will & Emery 28 State Street Boston, MA 02109-1775, US
Priority Data
09/228,37912.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS AND METHOD FOR PROCESSING OBJECTS IN COMPUTED TOMOGRAPHY DATA USING OBJECT PROJECTIONS
(FR) APPAREIL DE TOMODENSITOMETRIE ET PROCEDE DE TRAITEMENT D'OBJETS AU MOYEN DE PROJECTIONS D'OBJETS
Abstract
(EN)
An apparatus and method for identifying and classifying objects represented in computed tomography (CT) (400) data for a region using the shape (402) of the objects are disclosed. An object represented by CT data for a region is identified (404). Next, a two-dimensional projection of the object along a principal axis of the object is generated (415). The principal axis is identified by computing eigenvectors of a covariance matrix of spatial locations of voxels in the CT data that are associated with the object (408). The smallest eigenvector can be selected as the principal axis of the object along which the two-dimensional projection is generated (412). The identification of the object can be used in the classification of the object such as by altering one or more discrimination parameters (416).
(FR)
L'invention concerne un appareil et un procédé permettant d'identifier et de classer, à partir de leur forme (402), des objets représentés dans des données de tomodensitométrie (TD) (400) pour une région. On identifie (404) un objet représenté par des données TD pour une région. Puis, on crée (415) une projection bidimensionnelle de l'objet suivant un axe principal de l'objet. Ledit axe est identifié par des vecteurs de calcul propres d'une matrice de covariances des positions spatiales des voxels dans les données TD associées à l'objet (408). On peut choisir le plus petit vecteur propre comme axe principal de l'objet par rapport auquel on crée (412) la projection bidimensionnelle. Pour la classification de l'objet, on peut se servir de son identification, par exemple en modifiant un ou plusieurs paramètres de distinction.
Latest bibliographic data on file with the International Bureau