| Records |
| Author |
Sergio Escalera; Oriol Pujol; Eric Laciar; Jordi Vitria; Esther Pueyo; Petia Radeva |
| Title |
Coronary Damage Classification of Patients with the Chagas Disease with Error-Correcting Output Codes |
Type |
Conference Article |
| Year |
2008 |
Publication |
Intelligent Systems, 4th International IEEE Conference, 6–8 setembre 2008. |
Abbreviated Journal |
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| Volume |
2 |
Issue |
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Pages |
12–17 |
| Keywords |
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| Abstract |
The Chagaspsila disease is endemic in all Latin America, affecting millions of people in the continent. In order to diagnose and treat the Chagaspsila disease, it is important to detect and measure the coronary damage of the patient. In this paper, we analyze and categorize patients into different groups based on the coronary damage produced by the disease. Based on the features of the heart cycle extracted using high resolution ECG, a multi-class scheme of error-correcting output codes (ECOC) is formulated and successfully applied. The results show that the proposed scheme obtains significant performance improvements compared to previous works and state-of-the-art ECOC designs. |
| Address |
Varna (Bulgaria) |
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IS’08 |
| Notes |
MILAB; OR;HuPBA;MV |
Approved |
no |
| Call Number |
BCNPCL @ bcnpcl @ EPL2008 |
Serial |
1042 |
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| Author |
Agata Lapedriza; David Masip; Jordi Vitria |
| Title |
On the Use of Independent Tasks for Face Recognition |
Type |
Conference Article |
| Year |
2008 |
Publication |
IEEE Computer Society Conference on Computer Vision and Pattern Recognition |
Abbreviated Journal |
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| Volume |
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Pages |
1–6 |
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CVPR |
| Notes |
OR; MV |
Approved |
no |
| Call Number |
BCNPCL @ bcnpcl @ LMV2008b |
Serial |
1043 |
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| Author |
Carme Julia; Angel Sappa; Felipe Lumbreras; Joan Serrat; Antonio Lopez |
| Title |
An Adapted Alternation Approach for Recommender Systems |
Type |
Conference Article |
| Year |
2008 |
Publication |
IEEE International Conference on e–Business Engineering, |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
128–135 |
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| Abstract |
This paper presents an adaptation of the alternation technique to tackle the prediction task in recommender systems. These systems are widely considered in electronic commerce to help customers to find products they will probably like or dislike. As the SVD-based approaches, the proposed adapted alternation technique uses all the information stored in the system to find the predictions. The main advantage of this technique with respect to the SVD-based ones is that it can deal with missing data. Furthermore, it has a smaller computational cost. Experimental results with public data sets are provided in order to show the viability of the proposed adapted alternation approach. |
| Address |
Xi’an (Xina) |
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ADAS |
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no |
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ADAS @ adas @ JSL2008e |
Serial |
1044 |
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| Author |
Jose Manuel Alvarez; Antonio Lopez; Ramon Baldrich |
| Title |
Illuminant Invariant Model-Based Road Segmentation |
Type |
Conference Article |
| Year |
2008 |
Publication |
IEEE Intelligent Vehicles Symposium, |
Abbreviated Journal |
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Issue |
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Pages |
1155–1180 |
| Keywords |
road detection |
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| Address |
Eindhoven (The Netherlands) |
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ADAS;CIC |
Approved |
no |
| Call Number |
ADAS @ adas @ ALB2008 |
Serial |
1045 |
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| Author |
Fadi Dornaika; Angel Sappa |
| Title |
Improving Appearance-Based 3D Face Tracking Using Sparse Stereo Data |
Type |
Conference Article |
| Year |
2007 |
Publication |
Advances in Computer Graphics and Computer Vision, |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
354–366 |
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| Publisher |
Springer Verlag |
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Editor |
J. Braz, A. Ranchordas, H. Araujo and J. Jorge, |
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VISAPP |
| Notes |
ADAS |
Approved |
no |
| Call Number |
ADAS @ adas @ DoS2007d |
Serial |
1046 |
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| Author |
Partha Pratim Roy; Umapada Pal; Josep Llados |
| Title |
Multi-oriented English Text Line Extraction using Background and Foreground Information |
Type |
Conference Article |
| Year |
2008 |
Publication |
Proceedings of the 8th IAPR International Workshop on Document Analysis Systems, |
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Pages |
315–322 |
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Nara (Japo) |
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DAS |
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DAG |
Approved |
no |
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DAG @ dag @ RPL2008b |
Serial |
1047 |
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| Author |
Partha Pratim Roy; Umapada Pal; Josep Llados |
| Title |
Morphology Based Handwritten Line Segmentation using Foreground and Background Information |
Type |
Conference Article |
| Year |
2008 |
Publication |
International Conference on Frontiers in Handwriting Recognition, |
Abbreviated Journal |
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Issue |
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Pages |
241–246 |
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| Address |
Montreal (Canada) |
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Conference |
ICFHR |
| Notes |
DAG |
Approved |
no |
| Call Number |
DAG @ dag @ RPL2008a |
Serial |
1050 |
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| Author |
T. Widemann; Xavier Otazu |
| Title |
Titanias radius and an upper limit on its atmosphere from the September 8, 2001 stellar occultation |
Type |
Journal Article |
| Year |
2009 |
Publication |
International Journal of Solar System Studies |
Abbreviated Journal |
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| Volume |
199 |
Issue |
2 |
Pages |
458–476 |
| Keywords |
Occultations; Uranus, satellites; Satellites, shapes; Satellites, dynamics; Ices; Satellites, atmospheres |
| Abstract |
On September 8, 2001 around 2 h UT, the largest uranian moon, Titania, occulted Hipparcos star 106829 (alias SAO 164538, a V=7.2, K0 III star). This was the first-ever observed occultation by this satellite, a rare event as Titania subtends only 0.11 arcsec on the sky. The star's unusual brightness allowed many observers, both amateurs or professionals, to monitor this unique event, providing fifty-seven occultations chords over three continents, all reported here. Selecting the best 27 occultation chords, and assuming a circular limb, we derive Titania's radius: View the MathML source (1-σ error bar). This implies a density of View the MathML source using the value View the MathML source derived by Taylor [Taylor, D.B., 1998. Astron. Astrophys. 330, 362–374]. We do not detect any significant difference between equatorial and polar radii, in the limit View the MathML source, in agreement with Voyager limb image retrieval during the 1986 flyby. Titania's offset with respect to the DE405 + URA027 (based on GUST86 theory) ephemeris is derived: ΔαTcos(δT)=−108±13 mas and ΔδT=−62±7 mas (ICRF J2000.0 system). Most of this offset is attributable to a Uranus' barycentric offset with respect to DE405, that we estimate to be: View the MathML source and ΔδU=−85±25 mas at the moment of occultation. This offset is confirmed by another Titania stellar occultation observed on August 1st, 2003, which provides an offset of ΔαTcos(δT)=−127±20 mas and ΔδT=−97±13 mas for the satellite. The combined ingress and egress data do not show any significant hint for atmospheric refraction, allowing us to set surface pressure limits at the level of 10–20 nbar. More specifically, we find an upper limit of 13 nbar (1-σ level) at 70 K and 17 nbar at 80 K, for a putative isothermal CO2 atmosphere. We also provide an upper limit of 8 nbar for a possible CH4 atmosphere, and 22 nbar for pure N2, again at the 1-σ level. We finally constrain the stellar size using the time-resolved star disappearance and reappearance at ingress and egress. We find an angular diameter of 0.54±0.03 mas (corresponding to View the MathML source projected at Titania). With a distance of 170±25 parsecs, this corresponds to a radius of 9.8±0.2 solar radii for HIP 106829, typical of a K0 III giant. |
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ELSEVIER |
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0019-1035 |
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CIC |
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CAT @ cat @ Wid2009 |
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1052 |
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| Author |
Jose Antonio Rodriguez; Florent Perronnin |
| Title |
Handwritten word-spotting using hidden Markov models and universal vocabularies |
Type |
Journal Article |
| Year |
2009 |
Publication |
Pattern Recognition |
Abbreviated Journal |
PR |
| Volume |
42 |
Issue |
9 |
Pages |
2103-2116 |
| Keywords |
Word-spotting; Hidden Markov model; Score normalization; Universal vocabulary; Handwriting recognition |
| Abstract |
Handwritten word-spotting is traditionally viewed as an image matching task between one or multiple query word-images and a set of candidate word-images in a database. This is a typical instance of the query-by-example paradigm. In this article, we introduce a statistical framework for the word-spotting problem which employs hidden Markov models (HMMs) to model keywords and a Gaussian mixture model (GMM) for score normalization. We explore the use of two types of HMMs for the word modeling part: continuous HMMs (C-HMMs) and semi-continuous HMMs (SC-HMMs), i.e. HMMs with a shared set of Gaussians. We show on a challenging multi-writer corpus that the proposed statistical framework is always superior to a traditional matching system which uses dynamic time warping (DTW) for word-image distance computation. A very important finding is that the SC-HMM is superior when labeled training data is scarce—as low as one sample per keyword—thanks to the prior information which can be incorporated in the shared set of Gaussians. |
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Elsevier |
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0031-3203 |
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no |
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Admin @ si @ RoP2009 |
Serial |
1053 |
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| Author |
Alfons Juan-Ciscar; Gemma Sanchez |
| Title |
PRIS 2008. Pattern Recognition in Information Systems. Proceedings of the 8th international Workshop on Pattern Recognition in Information systems – PRIS 2008, in conjunction with ICEIS 2008 |
Type |
Book Whole |
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2008 |
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Barcelona (Spain) |
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DAG |
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no |
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DAG @ dag @ JuS2008 |
Serial |
1054 |
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| Author |
Xavier Otazu; Maria Vanrell; C. Alejandro Parraga |
| Title |
Colour induction effects are modelled by a low-level multiresolution wavelet framework |
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Journal |
| Year |
2008 |
Publication |
Perception 37(Suppl.): 107 |
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CIC |
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no |
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CAT @ cat @ OVP2008b |
Serial |
1055 |
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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 |
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| Volume |
38 |
Issue |
4 |
Pages |
289–298 |
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ADAS |
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no |
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ADAS @ adas @ BSA2008 |
Serial |
1056 |
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| Author |
Fadi Dornaika; Angel Sappa |
| Title |
Real Time Image Registration for Planar Structure and 3D Sensor Pose Estimation |
Type |
Book Chapter |
| Year |
2008 |
Publication |
Stereo Vision |
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| Volume |
18 |
Issue |
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Pages |
299–316 |
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Editor |
Asim Bhatti |
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ADAS |
Approved |
no |
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ADAS @ adas @ DoS2008c |
Serial |
1057 |
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| Author |
Jaume Garcia; Debora Gil; Sandra Pujades; Francesc Carreras |
| Title |
A Variational Framework for Assessment of the Left Ventricle Motion |
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Journal Article |
| Year |
2008 |
Publication |
International Journal Mathematical Modelling of Natural Phenomena |
Abbreviated Journal |
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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 |
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no |
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IAM @ iam @ GGC2008a |
Serial |
1058 |
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| Author |
Marçal Rusiñol; Josep Llados |
| Title |
Word and Symbol Spotting using Spatial Organization of Local Descriptors |
Type |
Conference Article |
| Year |
2008 |
Publication |
Proceedings of the 8th IAPR International Workshop on Document Analysis Systems, |
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Pages |
489–496 |
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Nara (Japan) |
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DAS |
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DAG |
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no |
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DAG @ dag @ RuL2008b |
Serial |
1059 |
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