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Author |
Agata Lapedriza; David Masip; Jordi Vitria |
Title |
On the Use of Independent Tasks for Face Recognition |
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Conference Article |
Year |
2008 |
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IEEE Computer Society Conference on Computer Vision and Pattern Recognition |
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1–6 |
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CVPR |
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OR; MV |
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BCNPCL @ bcnpcl @ LMV2008b |
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1043 |
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Author |
Jaume Garcia; Debora Gil; A.Bajo; M.J.Ledesma-Carbayo; C.SantaMarta |
Title |
Influence of the temporal resolution on the quantification of displacement fields in cardiac magnetic resonance tagged images |
Type |
Conference Article |
Year |
2008 |
Publication |
Proc. Computers in Cardiology |
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Volume |
35 |
Issue |
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Pages |
785-788 |
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Abstract |
It is difficult to acquire tagged cardiac MR images with a high temporal and spatial resolution using clinical MR scanners. However, if such images are used for quantifying scores based on motion, it is essential a resolution as high as possible. This paper explores the influence of the temporal resolution of a tagged series on the quantification of myocardial dynamic parameters. To such purpose we have designed a SPAMM (Spatial Modulation of Magnetization) sequence allowing acquisition of sequences at simple and double temporal resolution. Sequences are processed to compute myocardial motion by an automatic technique based on the tracking of the harmonic phase of tagged images (the Harmonic Phase Flow, HPF). The results have been compared to manual tracking of myocardial tags. The error in displacement fields for double resolution sequences reduces 17%. |
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Alan Murray |
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IAM |
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IAM @ iam @ GGB2008 |
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1508 |
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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 |
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Volume |
3 |
Issue |
6 |
Pages |
76-100 |
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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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IAM @ iam @ GGC2008a |
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1058 |
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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 |
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Volume |
44 |
Issue |
4 |
Pages |
279-280 |
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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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no |
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ADAS @ adas @ JSL2008a |
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939 |
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Author |
David Vazquez; Antonio Lopez |
Title |
Intrusion Classification in Intelligent Video Surveillance Systems |
Type |
Report |
Year |
2008 |
Publication |
Estudis d'Enginyeria Superior en Informática |
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UAB |
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Human detection; Car detection; Intrusion detection |
Abstract |
An intelligent video surveillance system (IVS) is a camera-based installation able to process in real-time the images coming from the cameras. The aim is to automatically warn about different events of interest at the moment they happen. Daview system of Davantis is a com mercial example of IVS system. The problems addressed by any IVS system, and so Daview, are so challenging that none IVS system is perfect, thus, they need continuous improvement. Accordingly, this project aims to study different approaches in order to outperform current Daview performance, in particular, we bet for improving its classification core. We present an in deep study of the state of the art on IVS systems, as well as on how Daview works. Based on that knowledge, we propose four possibilities for improving Daview classification capabilities: improve existent classifiers; improve existing classifiers combination; create new classifiers and create new classifier-based architectures. Our main contribution has been the incorporation of state-of-the-art feature selection and machine learning techniques for the classification tasks, a viewpoint not fully addressed in current Daview system. After a comprehensive quantitative evaluation we will see how one of our proposals clearly outperforms the overall performance of current Daview system. In particular the classification core that we finally propose consists in an AdaBoost One-Against-All architecture that uses appearance and motion features that were already present in current Daview system |
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Bellaterra, Spain |
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PFC |
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ADAS @ adas @ VL2008a |
Serial |
1670 |
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Author |
Xavier Otazu; Maria Vanrell; C. Alejandro Parraga |
Title |
Multiresolution Wavelet Framework Models Brightness Induction Effects |
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Journal |
Year |
2008 |
Publication |
Vision Research |
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VR |
Volume |
48 |
Issue |
5 |
Pages |
733–751 |
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CIC |
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no |
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CAT @ cat @ OVP2008a |
Serial |
927 |
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Author |
O. Fors; A. Richichi; Xavier Otazu; J. Nuñez |
Title |
A new wavelet-based approach for the automated treatment of large sets of lunar occultation data |
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Journal |
Year |
2008 |
Publication |
Astronomy and Astrohysics |
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Volume |
480 |
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297–304 |
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CAT @ cat @ FRO2008 |
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934 |
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Author |
Angel Sappa; Boris X. Vintimilla |
Title |
Edge Point Linking by Means of Global and Local Schemes |
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Book Chapter |
Year |
2008 |
Publication |
in Signal Processing for Image Enhancement and Multimedia Processing |
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11 |
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115–125 |
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Springer |
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Editor |
E. Damiani |
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no |
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ADAS @ adas @ SaV2008 |
Serial |
938 |
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Author |
Oriol Pujol; Sergio Escalera; Petia Radeva |
Title |
An Incremental Node Embedding Technique for Error Correcting Output Codes |
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Journal |
Year |
2008 |
Publication |
Pattern Recognition |
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PR |
Volume |
41 |
Issue |
2 |
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713–725 |
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MILAB;HuPBA |
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no |
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BCNPCL @ bcnpcl @ PER2008 |
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942 |
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Author |
David Masip; Jordi Vitria |
Title |
Shared Feature Extraction for Nearest Neighbor Face Recognition |
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Journal |
Year |
2008 |
Publication |
IEEE Transactions on Neural Networks |
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19 |
Issue |
4 |
Pages |
586–595 |
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OR;MV |
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BCNPCL @ bcnpcl @ MaV2008 |
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944 |
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Author |
Murad Al Haj |
Title |
Face Detection in Color Images Using Primitive Shape Features |
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2008 |
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CVC Technical Report #118 |
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Bellaterra (Spain) |
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Admin @ si @ AlH2008 |
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945 |
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Author |
Mathieu Nicolas Delalandre; Ernest Valveny; Josep Llados |
Title |
Performance Evaluation of Symbol Recognition and Spotting Systems: An Overview |
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Report |
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2008 |
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CVC Technical Report #117 |
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Bellaterra (Spain) |
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DAG |
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DAG @ dag @ DVL2008a |
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946 |
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Author |
Bogdan Raducanu; Jordi Vitria |
Title |
Learning to Learn: From Smarts Machines to Intelligent Machines |
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2008 |
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Patter Recognition Letters |
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PRL |
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29 |
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8 |
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1024–1032 |
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OR;MV |
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BCNPCL @ bcnpcl @ RaV2008a |
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950 |
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Sergio Escalera; David M.J. Tax; Oriol Pujol; Petia Radeva; Robert P.W. Duin |
Title |
Subclass Problem-Dependent Design for Error-Correcting Output Codes |
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2008 |
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IEEE Trans. on Pattern Analysis and Machine Intelligence, vol.30(6):1041–1054 |
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MILAB;HuPBA |
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BCNPCL @ bcnpcl @ ETP2008 |
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951 |
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Author |
S. Tanimoto; N. Bruining; David Rotger; Petia Radeva; J. Ligthart; R.T. van Domburg; P. W. Serryus |
Title |
Late Stent Recoil of the Bioabsorbable Everolimus Eluting Coronary Stent and its Relationship with Stent Struts Distribution and Plaque Morphology |
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2008 |
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Journal of the American College of Cardiology, vol. 52(20):1616–1620 |
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Bridgewater, NJ 08807(USA) |
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MILAB |
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BCNPCL @ bcnpcl @ TBR2008 |
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953 |
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