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1. EP1639542 - IMAGE SEGMENTATION IN TIME-SERIES IMAGES

Office
European Patent Office
Application Number 04736250
Application Date 07.06.2004
Publication Number 1639542
Publication Date 29.03.2006
Publication Kind A1
IPC
G06T 5/00
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
5Image enhancement or restoration
G06T 17/20
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
173DĀ modelling for computer graphics
20Wire-frame description, e.g. polygonalisation or tessellation
CPC
G06T 17/20
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
17Three dimensional [3D] modelling, e.g. data description of 3D objects
20Finite element generation, e.g. wire-frame surface description, ; tesselation
G06T 2207/10072
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
10Image acquisition modality
10072Tomographic images
G06T 2207/30004
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
30Subject of image; Context of image processing
30004Biomedical image processing
G06T 7/12
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
10Segmentation; Edge detection
12Edge-based segmentation
G06T 7/149
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
10Segmentation; Edge detection
149involving deformable models, e.g. active contour models
Applicants PHILIPS INTELLECTUAL PROPERTY
KONINKL PHILIPS ELECTRONICS NV
Inventors KAUS MICHAEL REINHOLD
PEKAR VLADIMIR
Designated States
Priority Data 03101750 16.06.2003 EP
04736250 07.06.2004 EP
Title
(DE) SEGMENTIERUNG VON BILDERZEITREIHEN
(EN) IMAGE SEGMENTATION IN TIME-SERIES IMAGES
(FR) SEGMENTATION D IMAGE DANS DES IMAGES EN S RIES CHRONO LOGIQUES
Abstract
(EN) The basic principle of deformable models consists of the adaptation of flexible surfaces, such as triangular meshes to structures in the image. The optimal adaptation of an initial mesh is solved by energy minimization, where maintaining the shape of a geometric model is traded off against detected feature points of the surface of the structure in the image. According to the present invention, a prior shape model M (t) is combined with adaptation results S (t - 1) of a previous image. Advantageously, this provides for a robust segmentation of moving or deforming objects.
(FR) Le principe de base des modèles déformables consiste en l'adaptation de surfaces souples, par exemple des mailles triangulaires, à des structures de l'image. L'adaptation optimale d'une maille initiale est résolue grâce à la minimisation énergétique, le maintien de la forme d'un modèle géométrique faisant l'objet d'un compromis au profit des points caractéristiques détectés de la surface de la structure dans l'image. Selon la présente invention, un modèle de forme préalable M (t) est combiné avec les résultats d'adaptation S (t-1) d'une image précédente. Avantageusement, cela permet une segmentation polyvalente d'objets en mouvement ou en cours de déformation.
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