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Author Agata Lapedriza; Santiago Segui; David Masip; Jordi Vitria
Title A Sparse Bayesian Approach for Joint Feature Selection and Classifier Learning Type Journal
Year 2008 Publication Pattern Analysis and Applications, Special Issue: Non–Parametric Distance–Based Classification Techniques and Their Applications, Abbreviated Journal
Volume 11 Issue (up) 3-4 Pages 299-308
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Publisher Springer Place of Publication Editor
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Notes OR;MV Approved no
Call Number BCNPCL @ bcnpcl @ LSM2008 Serial 996
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Author Bogdan Raducanu; Jordi Vitria
Title Online Nonparametric Discriminant Analysis for Incremental Subspace Learning and Recognition Type Journal
Year 2008 Publication Pattern Analysis and Applications. Special Issue: Non–Parametric Distance–Based Classification Techniques and Their Applications Abbreviated Journal
Volume 11 Issue (up) 3-4 Pages 259–268
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Publisher Springer Place of Publication Editor
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Notes OR;MV Approved no
Call Number BCNPCL @ bcnpcl @ RaV2008c Serial 997
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Author F. Pla; Petia Radeva; Jordi Vitria
Title Non-parametric distance-based classification techniques and their applications Type Journal
Year 2008 Publication Pattern Analysis and Applications, Special Issue: Non–Parametric Distance–Based Classification Techniques and Their Applications Abbreviated Journal
Volume 11 Issue (up) 3-4 Pages 223–225
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Publisher Springer Place of Publication Editor
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Notes OR;MILAB;MV Approved no
Call Number BCNPCL @ bcnpcl @ PRV2008 Serial 999
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Author Carme Julia; Angel Sappa; Felipe Lumbreras; Joan Serrat; Antonio Lopez
Title Rank Estimation in 3D Multibody Motion Segmentation Type Journal Article
Year 2008 Publication Electronic Letters Abbreviated Journal
Volume 44 Issue (up) 4 Pages 279-280
Keywords
Abstract A novel technique for rank estimation in 3D multibody motion segmentation is proposed. It is based on the study of the frequency spectra of moving rigid objects and does not use or assume a prior knowledge of the objects contained in the scene (i.e. number of objects and motion). The significance of rank estimation on multibody motion segmentation results is shown by using two motion segmentation algorithms over both synthetic and real data.
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Notes ADAS Approved no
Call Number ADAS @ adas @ JSL2008a Serial 939
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Author David Masip; Jordi Vitria
Title Shared Feature Extraction for Nearest Neighbor Face Recognition Type Journal
Year 2008 Publication IEEE Transactions on Neural Networks Abbreviated Journal
Volume 19 Issue (up) 4 Pages 586–595
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Notes OR;MV Approved no
Call Number BCNPCL @ bcnpcl @ MaV2008 Serial 944
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Author Carolina Malagelada; Fosca De Iorio; Fernando Azpiroz; Anna Accarino; Santiago Segui; Petia Radeva; Juan R. Malagelada
Title New Insight Into Intestinal Motor Function via Noninvasive Endoluminal Image Analysis Type Journal
Year 2008 Publication Gastroenterology Abbreviated Journal
Volume 135 Issue (up) 4 Pages 1155–1162
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Notes MILAB Approved no
Call Number BCNPCL @ bcnpcl @ MDA2008 Serial 1040
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Author Hugo Berti; Angel Sappa; Osvaldo Agamennoni
Title Improved Dynamic Window Approach by Using Lyapunov Stability Criteria Type Journal
Year 2008 Publication Latin American Applied Research Abbreviated Journal
Volume 38 Issue (up) 4 Pages 289–298
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Notes ADAS Approved no
Call Number ADAS @ adas @ BSA2008 Serial 1056
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Author Xavier Otazu; Maria Vanrell; C. Alejandro Parraga
Title Multiresolution Wavelet Framework Models Brightness Induction Effects Type Journal
Year 2008 Publication Vision Research Abbreviated Journal VR
Volume 48 Issue (up) 5 Pages 733–751
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Notes CIC Approved no
Call Number CAT @ cat @ OVP2008a Serial 927
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Author Joan Serrat; Ferran Diego; Felipe Lumbreras; Jose Manuel Alvarez; Antonio Lopez; C. Elvira
Title Dynamic Comparison of Headlights Type Journal Article
Year 2008 Publication Journal of Automobile Engineering Abbreviated Journal
Volume 222 Issue (up) 5 Pages 643–656
Keywords video alignment
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Notes ADAS Approved no
Call Number ADAS @ adas @ SDL2008a Serial 958
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Author Bogdan Raducanu; Jordi Vitria
Title Face Recognition by Artificial Vision Systems: A Cognitive Perspective Type Journal
Year 2008 Publication International Journal of Pattern Recognition and Artificial Intelligence Abbreviated Journal IJPRAI
Volume 22 Issue (up) 5 Pages 899–913
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Notes OR;MV Approved no
Call Number BCNPCL @ bcnpcl @ RaV2008b Serial 1007
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Author Debora Gil; Oriol Rodriguez-Leor; Petia Radeva; J. Mauri
Title Myocardial Perfusion Characterization From Contrast Angiography Spectral Distribution Type Journal Article
Year 2008 Publication IEEE Transactions on Medical Imaging Abbreviated Journal
Volume 27 Issue (up) 5 Pages 641-649
Keywords Contrast angiography; myocardial perfusion; spectral analysis.
Abstract Despite recovering a normal coronary flow after acute myocardial infarction, percutaneous coronary intervention does not guarantee a proper perfusion (irrigation) of the infarcted area. This damage in microcirculation integrity may detrimentally affect the patient survival. Visual assessment of the myocardium opacification in contrast angiography serves to define a subjective score of the microcirculation integrity myocardial blush analysis (MBA). Although MBA correlates with patient prognosis its visual assessment is a very difficult task that requires of a highly expertise training in order to achieve a good intraobserver and interobserver agreement. In this paper, we provide objective descriptors of the myocardium staining pattern by analyzing the spectrum of the image local statistics. The descriptors proposed discriminate among the different phenomena observed in the angiographic sequence and allow defining an objective score of the myocardial perfusion.
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Notes IAM;MILAB Approved no
Call Number IAM @ iam @ GRR2008 Serial 1541
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Author Fadi Dornaika; Angel Sappa
Title Evaluation of an Appearance-based 3D Face Tracker using Dense 3D Data Type Journal
Year 2008 Publication Machine Vision and Applications Abbreviated Journal
Volume 19 Issue (up) 5-6 Pages 427–441
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Notes ADAS Approved no
Call Number ADAS @ adas @ DoS2008b Serial 1018
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Author Francisco Javier Orozco; Xavier Roca; Jordi Gonzalez
Title Real-Time Gaze Tracking with Appearance-Based Models Type Journal Article
Year 2008 Publication Machine Vision Applications Abbreviated Journal MVAP
Volume 20 Issue (up) 6 Pages 353-364
Keywords Keywords Eyelid and iris tracking, Appearance models, Blinking, Iris saccade, Real-time gaze tracking
Abstract Psychological evidence has emphasized the importance of eye gaze analysis in human computer interaction and emotion interpretation. To this end, current image analysis algorithms take into consideration eye-lid and iris motion detection using colour information and edge detectors. However, eye movement is fast and and hence difficult to use to obtain a precise and robust tracking. Instead, our
method proposed to describe eyelid and iris movements as continuous variables using appearance-based tracking. This approach combines the strengths of adaptive appearance models, optimization methods and backtracking techniques.Thus,
in the proposed method textures are learned on-line from near frontal images and illumination changes, occlusions and fast movements are managed. The method achieves real-time performance by combining two appearance-based trackers to a
backtracking algorithm for eyelid estimation and another for iris estimation. These contributions represent a significant advance towards a reliable gaze motion description for HCI and expression analysis, where the strength of complementary
methodologies are combined to avoid using high quality images, colour information, texture training, camera settings and other time-consuming processes.
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Notes ISE Approved no
Call Number ISE @ ise @ ORG2008 Serial 972
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Author Jaume Garcia; Debora Gil; Sandra Pujades; Francesc Carreras
Title A Variational Framework for Assessment of the Left Ventricle Motion Type Journal Article
Year 2008 Publication International Journal Mathematical Modelling of Natural Phenomena Abbreviated Journal
Volume 3 Issue (up) 6 Pages 76-100
Keywords Key words: Left Ventricle Dynamics, Ventricular Torsion, Tagged Magnetic Resonance, Motion Tracking, Variational Framework, Gabor Transform.
Abstract Impairment of left ventricular contractility due to cardiovascular diseases is reflected in left ventricle (LV) motion patterns. An abnormal change of torsion or long axis shortening LV values can help with the diagnosis and follow-up of LV dysfunction. Tagged Magnetic Resonance (TMR) is a widely spread medical imaging modality that allows estimation of the myocardial tissue local deformation. In this work, we introduce a novel variational framework for extracting the left ventricle dynamics from TMR sequences. A bi-dimensional representation space of TMR images given by Gabor filter banks is defined. Tracking of the phases of the Gabor response is combined using a variational framework which regularizes the deformation field just at areas where the Gabor amplitude drops, while restoring the underlying motion otherwise. The clinical applicability of the proposed method is illustrated by extracting normality models of the ventricular torsion from 19 healthy subjects.
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Notes IAM Approved no
Call Number IAM @ iam @ GGC2008a Serial 1058
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Author Carles Fernandez; Pau Baiget; Xavier Roca; Jordi Gonzalez
Title Interpretation of Complex Situations in a Semantic-based Surveillance Framework Type Journal
Year 2008 Publication Signal Processing: Image Communication, Special Issue on Semantic Analysis for Interactive Multimedia Services Abbreviated Journal
Volume 23 Issue (up) 7 Pages 554-569
Keywords Cognitive vision system; Situation analysis; Applied ontologies
Abstract The integration of cognitive capabilities in computer vision systems requires both to enable high semantic expressiveness and to deal with high computational costs as large amounts of data are involved in the analysis. This contribution describes a cognitive vision system conceived to automatically provide high-level interpretations of complex real-time situations in outdoor and indoor scenarios, and to eventually maintain communication with casual end users in multiple languages. The main contributions are: (i) the design of an integrative multilevel architecture for cognitive surveillance purposes; (ii) the proposal of a coherent taxonomy of knowledge to guide the process of interpretation, which leads to the conception of a situation-based ontology; (iii) the use of situational analysis for content detection and a progressive interpretation of semantically rich scenes, by managing incomplete or uncertain knowledge, and (iv) the use of such an ontological background to enable multilingual capabilities and advanced end-user interfaces. Experimental results are provided to show the feasibility of the proposed approach.
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Notes ISE Approved no
Call Number ISE @ ise @ FBR2008 Serial 954
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