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Author
Ole Larsen; Petia Radeva; Enric Marti
Title
Bounds on the optimal elasticity parameters for a snake
Type
Journal Article
Year
1995
Publication
Image Analysis and Processing
Abbreviated Journal
Volume
Issue
Pages
37-42
Keywords
Abstract
This paper develops a formalism by which an estimate for the upper and lower bounds for the elasticity parameters for a snake can be obtained. Objects different in size and shape give rise to different bounds. The bounds can be obtained based on an analysis of the shape of the object of interest. Experiments on synthetic images show a good correlation between the estimated behaviour of the snake and the one actually observed. Experiments on real X-ray images show that the parameters for optimal segmentation lie within the estimated bounds.
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
MILAB;IAM
Approved
no
Call Number
IAM @ iam @ LRM1995a
Serial
1559
Permanent link to this record
Author
Oriol Pujol; Debora Gil; Petia Radeva
Title
Fundamentals of Stop and Go active models
Type
Journal Article
Year
2005
Publication
Image and Vision Computing
Abbreviated Journal
Volume
23
Issue
8
Pages
681-691
Keywords
Deformable models; Geodesic snakes; Region-based segmentation
Abstract
An efficient snake formulation should conform to the idea of picking the smoothest curve among all the shapes approximating an object of interest. In current geodesic snakes, the regularizing curvature also affects the convergence stage, hindering the latter at concave regions. In the present work, we make use of characteristic functions to define a novel geodesic formulation that decouples regularity and convergence. This term decoupling endows the snake with higher adaptability to non-convex shapes. Convergence is ensured by splitting the definition of the external force into an attractive vector field and a repulsive one. In our paper, we propose to use likelihood maps as approximation of characteristic functions of object appearance. The better efficiency and accuracy of our decoupled scheme are illustrated in the particular case of feature space-based segmentation.
Address
Corporate Author
Thesis
Publisher
Butterworth-Heinemann
Place of Publication
Newton, MA, USA
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0262-8856
ISBN
Medium
Area
Expedition
Conference
Notes
IAM;MILAB;HuPBA
Approved
no
Call Number
IAM @ iam @ PGR2005
Serial
1629
Permanent link to this record
Author
Oriol Rodriguez-Leor; A. Carol; H. Tizon; Eduard Fernandez-Nofrerias; J. Mauri; Vicente del Valle; Debora Gil; Aura Hernandez-Sabate; Petia Radeva
Title
Model estadístic-determinístic per la segmentació de l adventicia en imatges d ecografía intracoronaria
Type
Journal Article
Year
2005
Publication
Rev Societat Catalana Cardiologia
Abbreviated Journal
Volume
5
Issue
Pages
41
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
IAM;MILAB
Approved
no
Call Number
IAM @ iam @ RCT2005
Serial
1637
Permanent link to this record
Author
Oriol Rodriguez-Leor; J. Mauri; Eduard Fernandez-Nofrerias; C. Garcia; R. Villuendas; Vicente del Valle; Debora Gil; Petia Radeva
Title
Reconstruction of a spatio-temporal model of the intima layer from intravascular ultrasound sequences
Type
Journal Article
Year
2003
Publication
European Heart Journal
Abbreviated Journal
Volume
Issue
Pages
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
ESC Congress
Notes
IAM;MILAB
Approved
no
Call Number
IAM @ iam @ RMF2003c
Serial
1641
Permanent link to this record
Author
Oriol Rodriguez-Leor; J. Mauri; Eduard Fernandez-Nofrerias; Antonio Tovar; Vicente del Valle; Aura Hernandez-Sabate; Debora Gil; Petia Radeva
Title
Utilización de la Estructura de los Campos Vectoriales para la Detección de la Adventicia en Imágenes de Ecografía Intracoronaria
Type
Journal Article
Year
2004
Publication
Revista Internacional de Enfermedades Cardiovasculares Revista Española de Cardiología
Abbreviated Journal
Volume
57
Issue
2
Pages
100
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
SEC
Notes
IAM;MILAB
Approved
no
Call Number
IAM @ iam @ RMF2004
Serial
1642
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