| Records |
| Author |
Aura Hernandez-Sabate |
| Title |
Automatic adventitia segmentation in IntraVascular UltraSound images |
Type |
Report |
| Year |
2005 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
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Issue |
85 |
Pages |
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Keywords  |
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| Abstract |
A usual tool in cardiac disease diagnosis is vessel plaque assessment by analysis of IVUS sequences. Manual detection of lumen-intima, intima-media and media-adventitia vessel borders is the main activity of physicians in the process of plaque quantification. Large variety in vessel border descriptors, as well as, shades, artifacts and blurred response due to ultrasound physical properties troubles automated media-adventitia segmentation. This experimental work presents a solution to such a complex problem. The process blends advanced anisotropic filtering operators and statistic classification techniques, achieving an efficient vessel border modelling strategy. First of all, we introduce the theoretic base of the method. After that, we show the steps of the algorithm, validating the method with statistics that show that the media-adventitia border detection achieves an accuracy in the range of inter-observer variability regardless of plaque nature, vessel geometry and incomplete vessel borders. Finally, we present a little Matlab application to the automatic media-adventitia border. |
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Thesis |
Master's thesis |
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Place of Publication |
08193 Bellaterra, Barcelona (Spain) |
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| Notes |
IAM; |
Approved |
no |
| Call Number |
IAM @ iam @ Her2005 |
Serial |
1544 |
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| Author |
Aura Hernandez-Sabate; Debora Gil; Petia Radeva |
| Title |
A Deterministic-Statistical Strategy for Adventitia Segmentation in IVUS images |
Type |
Report |
| Year |
2005 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
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Issue |
89 |
Pages |
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| Keywords |
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| Abstract |
A useful tool for some specific studies in cardiac disease diagnosis is vessel plaque assessment by analysis of IVUS sequences. Manual detection of luminal (inner) and media-adventitia (external) vessel borders is the main activity of physicians in the process of lumen narrowing (plaque) quantification. Difficult definition of vessel border descriptors, as well as, shades, artifacts and blurred signal response due to ultrasound physical properties troubles automated adventitia segmentation. In order to efficiently approach such a complex problem, we propose blending advanced anisotropic filtering operators and statistical classification techniques into a vessel border modelling strategy. Our systematic statistical analysis shows that the reported adventitia detection achieves an accuracy in the range of inter-observer variability regardless of plaque nature, vessel geometry and incomplete vessel borders. |
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| Notes |
IAM; MILAB |
Approved |
no |
| Call Number |
IAM @ iam @ HGR2005a |
Serial |
1548 |
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| Author |
Ole Larsen; Petia Radeva; Enric Marti |
| Title |
Calculating the Bounds on the Optimal Parameters of Elasticity for a Snake |
Type |
Report |
| Year |
1994 |
Publication |
Technical Report |
Abbreviated Journal |
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| Address |
Aalborg University |
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Thesis |
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| Publisher |
Aalborg University, Laboratory of image Analysis. |
Place of Publication |
Denmark |
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Aalborg University, Laboratory of image Analysis. |
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| Notes |
MILAB;IAM |
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no |
| Call Number |
IAM @ iam @ LRM1994 |
Serial |
1560 |
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| Author |
Jaime Lopez-Krahe; Josep Llados; Enric Marti |
| Title |
Architectural Floor Plan Analysis |
Type |
Report |
| Year |
2000 |
Publication |
CVonline |
Abbreviated Journal |
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| Address |
Edimburg, UK |
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University of Edinburgh |
Place of Publication |
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Editor |
Robert B. Fisher |
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Medium |
online pdf |
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| Notes |
DAG;IAM |
Approved |
no |
| Call Number |
IAM @ iam @ LLM2000 |
Serial |
1561 |
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| Author |
Patricia Marquez |
| Title |
Conditions Ensuring Accuracy of Local Optical Flow Schemes |
Type |
Report |
| Year |
2010 |
Publication |
CVC Tehcnical Report |
Abbreviated Journal |
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| Volume |
157 |
Issue |
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Pages |
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| Keywords |
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| Abstract |
Accurate computation of optical flow is a key-point in many image processing fields. Detection of anomalous and unpredicted agents (such as pedestrians, bikers or cars) in urban scenes or pathology discrimination in medical imaging sequences, to mention just a two. The above kinds sequences present two main difficulties for standard optical flow techniques. On one hand, variability in acquisition conditions (illuminance, medical imaging modality, ...) force an alterantive representation for images fulfilling the britghtness constancy constrain. On the hand, current variational schemes produce oversmoothed fields unable to properly model discontinuous behaviours such as collisions or functionless pathological areas. This master project explores the abilities and limitations of local and global optical flow approaches. The master student will put especial emphasis in the theoretical grounds behind in order to design a variational framework combining the theoretical advantages of the considered techniques. In particular an optical flow based on Gabor phase tracking (developed in the group for medical imaging) will be generalized to urban scenes. |
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Thesis |
Master's thesis |
| Publisher |
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Place of Publication |
Bellaterra 08193, Barcelona, Spain |
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| Notes |
IAM; |
Approved |
no |
| Call Number |
IAM @ iam @ Mar2010 |
Serial |
1582 |
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| Author |
Enric Marti |
| Title |
Análisis de elementos gráficos en documentos |
Type |
Report |
| Year |
1996 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
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Issue |
9 |
Pages |
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| Keywords |
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| Abstract |
En este texto se presenta un estudio sobre las t’ecnicas y aplicaciones de an’alisis de documentos, y más concretamente abordando la problem’atica del an’alisis de de entidades gr’aficas. El ’area de an’alisis de documentos tiene como objetivo la interpretaci’on de documentos impresos sobre papel por m’etodos computacionales, para obtener una descripci’on con un alto nivel de abstracci’on, que permita su posterior tratamiento y archivo por m’etodos inform’aticos. Este objetivo, junto a los trabajos realizados hasta el momento, le otorgan a esta ’area un amplio ’ambito de aplicaciones para la manipulaci’on y archivo de documentos sobre papel, que puede llegar a significar un salto cualitativo importante (del papel al disco ’optico) en el uso de soportes de informaci’on, debido a las importantes prestaciones de acceso y capacidad de archivo que suponen los medios inform’aticos. Generalmente los documentos son introducidos en los sistemas de an’alisis de documentos mediante scanner, obt... |
| Address |
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Thesis |
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| Publisher |
Computer Vision Centre |
Place of Publication |
CVC UAB |
Editor |
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| Notes |
IAM; |
Approved |
no |
| Call Number |
IAM @ iam @ Mar1996 |
Serial |
1587 |
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| Author |
Ferran Poveda |
| Title |
Visualització i interpretació tridimensional de l’arquitectura de les fibres musculars del miocardi |
Type |
Report |
| Year |
2009 |
Publication |
Master en Tecnologies Multimedia |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Abstract |
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| Address |
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Thesis |
Master's thesis |
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Place of Publication |
08193 Bellaterra, Barcelona (Spain) |
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| Notes |
IAM; |
Approved |
no |
| Call Number |
IAM @ iam @ Pov2009 |
Serial |
1625 |
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| Author |
Petia Radeva; Amir Amini; Jintao Huang; Enric Marti |
| Title |
Deformable B-Solids: application for localization and tracking of MRI-SPAMM data |
Type |
Report |
| Year |
1996 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
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Issue |
8 |
Pages |
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| Abstract |
To date, MRI-SPAMM data from different image slices have been analyzed independently. In this paper, we propose an approach for 3D tag localization and tracking of SPAMM data by a novel deformable B-solid. The solid is defined in terms of a 3D tensor product B-spline. The isoparametric curves of the B-spline solid have special importance. These are termed implicit snakes as they deform under image forces from tag lines in different image slices. The localization and tracking of tag lines is performed under constraints of continuity and smoothness of the B-solid. The framework unifies the problems of localization, and displacement fitting and interpolation into the same procedure utilizing B-spline bases for interpolation. To track motion from boundaries and restrict image forces to the myocardium, a volumetric model is employed as a pair of coupled endocardial and epicardial B-spline surfaces. To recover deformations in the LV an energy-minimization problem is posed where both tag and ... |
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CVC (UAB) |
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| Notes |
MILAB;IAM |
Approved |
no |
| Call Number |
IAM @ iam @ RHM1996 |
Serial |
1631 |
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| Author |
Eric Amiel |
| Title |
Visualisation de vaisseaux sanguins |
Type |
Report |
| Year |
2005 |
Publication |
Rapport de Stage |
Abbreviated Journal |
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Issue |
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Pages |
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| Corporate Author |
Université Paul Sabatier Toulouse III |
Thesis |
Bachelor's thesis |
| Publisher |
Université Paul Sabatier Toulouse III |
Place of Publication |
Toulouse |
Editor |
Enric Marti |
| Language |
French |
Summary Language |
French |
Original Title |
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| Series Editor |
IUP Systèmes Intelligents |
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| Notes |
IAM |
Approved |
no |
| Call Number |
IAM @ iam @ Ami2005 |
Serial |
1690 |
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| Author |
Hany Salah Eldeen |
| Title |
Colour Naming in Context through a Perceptual Model |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
130 |
Issue |
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Pages |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
| Publisher |
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Place of Publication |
Bellaterra, Barcelona |
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no |
| Call Number |
Admin @ si @ Eld2009 |
Serial |
2389 |
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| Author |
Naila Murray |
| Title |
Perceptual Feature Detection |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
131 |
Issue |
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Pages |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
| Publisher |
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Place of Publication |
Bellaterra, Barcelona |
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CIC |
Approved |
no |
| Call Number |
Admin @ si @ Mur2009 |
Serial |
2390 |
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| Author |
Josep M. Gonfaus |
| Title |
Semantic Segmentation of Images Using Random Ferns |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
132 |
Issue |
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Pages |
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| Address |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Place of Publication |
Bellaterra, Barcelona |
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| Notes |
ISE |
Approved |
no |
| Call Number |
Admin @ si @ Gon2009 |
Serial |
2391 |
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| Author |
Alejandro Gonzalez Alzate |
| Title |
Evaluation of spatiotemporal descriptors for pedestrian detection in video sequences |
Type |
Report |
| Year |
2011 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
166 |
Issue |
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Pages |
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| Address |
Bellaterra (Spain) |
| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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ADAS |
Approved |
no |
| Call Number |
Admin @ si @ Gon2011 |
Serial |
1932 |
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| Author |
Yainuvis Socarras |
| Title |
Image segmentation for improving pedestrian detection |
Type |
Report |
| Year |
2011 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
167 |
Issue |
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Pages |
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| Abstract |
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| Address |
Bellaterra (Spain) |
| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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ADAS; |
Approved |
no |
| Call Number |
Admin @ si @ Soc2011 |
Serial |
1933 |
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| Author |
Maria del Camp Davesa |
| Title |
Human action categorization in image sequences |
Type |
Report |
| Year |
2011 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
169 |
Issue |
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Pages |
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| Address |
Bellaterra (Spain) |
| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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| Notes |
CiC;CIC |
Approved |
no |
| Call Number |
Admin @ si @ Dav2011 |
Serial |
1934 |
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