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Author
Patricia Marquez; Debora Gil ; Aura Hernandez-Sabate
Title
Error Analysis for Lucas-Kanade Based Schemes
Type
Conference Article
Year
2012
Publication
9th International Conference on Image Analysis and Recognition
Abbreviated Journal
Volume
7324
Issue
I
Pages
184-191
Keywords
Optical flow, Confidence measure, Lucas-Kanade, Cardiac Magnetic Resonance
Abstract
Optical flow is a valuable tool for motion analysis in medical imaging sequences. A reliable application requires determining the accuracy of the computed optical flow. This is a main challenge given the absence of ground truth in medical sequences. This paper presents an error analysis of Lucas-Kanade schemes in terms of intrinsic design errors and numerical stability of the algorithm. Our analysis provides a confidence measure that is naturally correlated to the accuracy of the flow field. Our experiments show the higher predictive value of our confidence measure compared to existing measures.
Address
Aveiro, Portugal
Corporate Author
Thesis
Publisher
Springer-Verlag Berlin Heidelberg
Place of Publication
Editor
Language
english
Summary Language
Original Title
Series Editor
Campilho, Aurélio and Kamel, Mohamed
Series Title
Lecture Notes in Computer Science
Abbreviated Series Title
LNCS
Series Volume
Series Issue
Edition
ISSN
0302-9743
ISBN
978-3-642-31294-6
Medium
Area
Expedition
Conference
ICIAR
Notes
IAM
Approved
no
Call Number
IAM @ iam @ MGH2012a
Serial
1899
Permanent link to this record
Author
Debora Gil; Oriol Rodriguez-Leor; Petia Radeva; Aura Hernandez-Sabate
Title
Assessing Artery Motion Compensation in IVUS
Type
Book Chapter
Year
2007
Publication
Computer Analysis Of Images And Patterns
Abbreviated Journal
LNCS
Volume
4673
Issue
Pages
213-220
Keywords
validation standards; quality measures; IVUS motion compensation; conservation laws; Fourier development
Abstract
Cardiac dynamics suppression is a main issue for visual improvement and computation of tissue mechanical properties in IntraVascular UltraSound (IVUS). Although in recent times several motion compensation techniques have arisen, there is a lack of objective evaluation of motion reduction in in vivo pullbacks. We consider that the assessment protocol deserves special attention for the sake of a clinical applicability as reliable as possible. Our work focuses on defining a quality measure and a validation protocol assessing IVUS motion compensation. On the grounds of continuum mechanics laws we introduce a novel score measuring motion reduction in in vivo sequences. Synthetic experiments validate the proposed score as measure of motion parameters accuracy; while results in in vivo pullbacks show its reliability in clinical cases.
Address
Corporate Author
Thesis
Publisher
Springerlink
Place of Publication
Heidelberg
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Lecture Notes in Computer Science
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
978-3-540-74271-5
Medium
Area
Expedition
Conference
Notes
IAM;MILAB
Approved
no
Call Number
IAM @ iam @ GRR2007
Serial
1540
Permanent link to this record
Author
Debora Gil; Jordi Gonzalez; Gemma Sanchez (eds)
Title
Computer Vision: Advances in Research and Development
Type
Book Whole
Year
2007
Publication
Proceedings of the 2nd CVC International Workshop
Abbreviated Journal
Volume
Issue
Pages
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
UAB
Place of Publication
Bellaterra (Spain)
Editor
Debora Gil; Jordi Gonzalez; Gemma Sanchez
Language
Summary Language
Original Title
Series Editor
Series Title
2
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
978-84-935251-4-9
Medium
Area
Expedition
Conference
Notes
IAM; ISE; DAG
Approved
no
Call Number
IAM @ iam @ GGS2007
Serial
1493
Permanent link to this record
Author
Enric Marti; Debora Gil; Carme Julia
Title
Experiencia d aplicació de la metodología d aprenentatge per proyectes en assignatures d Enginyeria Informàtica per a una millor adaptació als crèdits ECTS i EEES
Type
Miscellaneous
Year
2008
Publication
Experiències docents innovadores de la UAB en ciències experimentals i tecnologies i en ciències de la salud
Abbreviated Journal
Volume
1
Issue
Pages
57-68
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
UAB
Place of Publication
Editor
IDES-UAB; M.Enric Martinez, E.A.
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
978-84-490-2576-1
Medium
Area
Expedition
Conference
Notes
IAM;ADAS;
Approved
no
Call Number
IAM @ iam @ MGJ2008
Serial
1592
Permanent link to this record
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