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Author |
Carme Julia |
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Title |
Missig Data Matrix Factorization Addressing the Structure from Motion Problem |
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Miscellaneous |
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2008 |
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CVC–UAB |
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Bellaterra |
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978–84–935251–6–3 |
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Admin @ si @ Jul2008 |
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1104 |
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Author |
Dani Rowe |
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Title |
Towards Robust Multiple-Target Tracking in Unconstrained Human-Populated Environments |
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2008 |
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CVC–UAB |
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978–84–935251–5–6 |
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Admin @ si @ Row2008 |
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1103 |
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Author |
Debora Gil; Jaume Garcia; Mariano Vazquez; Ruth Aris; Guilleaume Houzeaux |
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Title |
Patient-Sensitive Anatomic and Functional 3D Model of the Left Ventricle Function |
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Conference Article |
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2008 |
Publication |
8th World Congress on Computational Mechanichs (WCCM8) |
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Left Ventricle, Electromechanical Models, Image Processing, Magnetic Resonance. |
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Early diagnosis and accurate treatment of Left Ventricle (LV) dysfunction significantly increases the patient survival. Impairment of LV contractility due to cardiovascular diseases is reflected in its motion patterns. Recent advances in medical imaging, such as Magnetic Resonance (MR), have encouraged research on 3D simulation and modelling of the LV dynamics. Most of the existing 3D models [1] consider just the gross anatomy of the LV and restore a truncated ellipse which deforms along the cardiac cycle. The contraction mechanics of any muscle strongly depends on the spatial orientation of its muscular fibers since the motion that the muscle undergoes mainly takes place along the fibers. It follows that such simplified models do not allow evaluation of the heart electro-mechanical function and coupling, which has recently risen as the key point for understanding the LV functionality [2]. In order to thoroughly understand the LV mechanics it is necessary to consider the complete anatomy of the LV given by the orientation of the myocardial fibres in 3D space as described by Torrent Guasp [3].
We propose developing a 3D patient-sensitive model of the LV integrating, for the first time, the ven- tricular band anatomy (fibers orientation), the LV gross anatomy and its functionality. Such model will represent the LV function as a natural consequence of its own ventricular band anatomy. This might be decisive in restoring a proper LV contraction in patients undergoing pace marker treatment.
The LV function is defined as soon as the propagation of the contractile electromechanical pulse has been modelled. In our experiments we have used the wave equation for the propagation of the electric pulse. The electromechanical wave moves on the myocardial surface and should have a conductivity tensor oriented along the muscular fibers. Thus, whatever mathematical model for electric pulse propa- gation [4] we consider, the complete anatomy of the LV should be extracted.
The LV gross anatomy is obtained by processing multi slice MR images recorded for each patient. Information about the myocardial fibers distribution can only be extracted by Diffusion Tensor Imag- ing (DTI), which can not provide in vivo information for each patient. As a first approach, we have
Figure 1: Scheme for the Left Ventricle Patient-Sensitive Model.
computed an average model of fibers from several DTI studies of canine hearts. This rough anatomy is the input for our electro-mechanical propagation model simulating LV dynamics. The average fiber orientation is updated until the simulated LV motion agrees with the experimental evidence provided by the LV motion observed in tagged MR (TMR) sequences. Experimental LV motion is recovered by applying image processing, differential geometry and interpolation techniques to 2D TMR slices [5]. The pipeline in figure 1 outlines the interaction between simulations and experimental data leading to our patient-tailored model. |
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Venice; Italy |
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9788496736559 |
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IAM; |
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IAM @ iam @ GGV2008b |
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993 |
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Author |
Robert Benavente; Laura Igual; Fernando Vilariño |
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Title |
Current Challenges in Computer Vision |
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2008 |
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Proccedings of the Third Internal Workshop |
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978-84-936529-0-6 |
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CVCRD |
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MILAB;CIC;SIAI |
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BCNPCL @ bcnpcl @ BIV2008 |
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1110 |
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Author |
Jordi Gonzalez; Thomas B. Moeslund |
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Title |
Tracking Humans for the Evaluation of their Motion in Image Sequences |
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2008 |
Publication |
First International Workshop, THEMIS |
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Leeds (UK) |
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978-84-935251-9-4 |
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ISE @ ise @ GMW2008 |
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1002 |
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Author |
Pau Baiget; Eric Sommerlade; I. Reid; Jordi Gonzalez |
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Title |
Finding Prototypes to Estimate Trajectory Development in Outdoor Scenarios |
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Conference Article |
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Year |
2008 |
Publication |
First International Workshop on Tracking Humans for the Evaluation of their Motion in Image Sequences BMVC 2008, |
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27–34 |
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Leed |
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978-84-935251-9-4 |
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THEMIS’ |
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ISE @ ise @ BSR2008 |
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1008 |
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Author |
Ognjen Rudovic; Xavier Roca |
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Title |
Building Temporale Templates for Human Behaviour Classification |
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Conference Article |
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Year |
2008 |
Publication |
First International Workshop on Tracking Humans for the Evaluation of their Motion in Image Sequences BMVC 2008, |
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79–88 |
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Leeds (UK) |
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978-84-935251-9-4 |
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THEMIS’ |
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ISE |
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ISE @ ise @ RuR2008 |
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1009 |
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Author |
Carles Fernandez; Pau Baiget; Jordi Gonzalez |
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Title |
Cognitive-Guided Semantic Exploitation in Video Surveillance Interfaces |
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Conference Article |
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2008 |
Publication |
First International Workshop on Tracking Humans for the Evaluation of their Motion in Image Sequences. BMVC 2008, |
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53–60 |
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Leeds (UK) |
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978-84-935251-9-4 |
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THEMIS’ |
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ISE |
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ISE @ ise @ FBG2008 |
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1010 |
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Author |
Enric Marti; Jaume Rocarias; Debora Gil; Marc Vivet; Carme Julia |
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Title |
Uso de recursos virtuales en Aprendizaje Basado en Proyectos. Una experiencia en la asignatura de Graficos por Computador |
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Miscellaneous |
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2008 |
Publication |
Octava Jornada sobre Aprendizaje Cooperativo |
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79–88 |
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En esta comunicación presentamos una experiencia en Aprendizaje Basado en Proyectos (Project
Based Learning – PBL) realizada los últimos cuatro años (cursos del 2004-05 al 2007-08) en Gráficos
por Computador 2, asignatura optativa de tercer curso de Ingeniería Informática, titulación impartida
en la Escuela Técnica Superior de Ingeniería (ETSE) de la Universidad Autónoma de Barcelona
(UAB).
Fruto de la constante voluntad de mejora de la organización ABP de nuestra asignatura nos decidimos
a utilizar una herramienta LMS (Learning Management System) basada en Moodle y adaptada por
nosotros llamada Caronte para poder gestionar la documentación generada en ABP, y añadir una
componente semipresencial a la asignatura.
En primer lugar se presenta la organización de nuestra asignatura, basada proponer al alumno dos
itinerarios para cursarla: el itinerario ABP y el itinerario basado en clases magistrales i examen que
llamaremos TPPE (Teoría, Problemas, Prácticas, Examen). La dinámica ABP nos genera una cantidad
importante de documentación entre los grupos y el profesor, aparte de el feedback que el profesor
genera a los alumnos.
En la segunda parte del artículo presentamos los espacios docentes electrónicos de ambos itinerarios,
con los que trabajan los alumnos.
Finalmente, mostramos los resultados obtenidos de alumnos matriculados y de encuestas de valoración
realizados por los alumnos para finalmente exponer las conclusiones de estos cuatro años de
experiencia en ABP y en el uso de recursos virtuales en ABP, así como plantear mejoras y temas de
discusión sobre ABP. |
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Lleida |
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978-84-691-4605-7 |
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IAM;ADAS; |
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no |
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Call Number |
IAM @ iam @ MRG2008a |
Serial |
1101 |
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Author |
Enric Marti; Debora Gil; Carme Julia |
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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 |
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Miscellaneous |
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2008 |
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Experiències docents innovadores de la UAB en ciències experimentals i tecnologies i en ciències de la salud |
Abbreviated Journal |
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1 |
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57-68 |
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UAB |
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IDES-UAB; M.Enric Martinez, E.A. |
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978-84-490-2576-1 |
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IAM;ADAS; |
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IAM @ iam @ MGJ2008 |
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1592 |
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Author |
Liu Wenyin; Josep Llados; Jean-Marc Ogier |
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Title |
Graphics Recognition. Recent Advances and New Opportunities. |
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2008 |
Publication |
7th International Workshop, Selected Papers, |
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5046 |
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Curitiba (Brazil) |
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LNCS |
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978-3-540-88184-1 |
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GREC |
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DAG |
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DAG @ dag @ WLO2008 |
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1012 |
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Author |
Santiago Segui; Laura Igual; Fernando Vilariño; Petia Radeva; Carolina Malagelada; Fernando Azpiroz; Jordi Vitria |
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Title |
Diagnostic System for Intestinal Motility Disfunctions Using Video Capsule Endoscopy |
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2008 |
Publication |
Computer Vision Systems. 6th International |
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5008 |
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251–260 |
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Wireless Video Capsule Endoscopy is a clinical technique consisting of the analysis of images from the intestine which are pro- vided by an ingestible device with a camera attached to it. In this paper we propose an automatic system to diagnose severe intestinal motility disfunctions using the video endoscopy data. The system is based on the application of computer vision techniques within a machine learn- ing framework in order to obtain the characterization of diverse motil- ity events from video sequences. We present experimental results that demonstrate the effectiveness of the proposed system and compare them with the ground-truth provided by the gastroenterologists. |
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Santorini (Greece) |
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Springer-Verlag |
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Berlin Heidelberg |
Editor |
A. Gasteratos, M. Vincze, and J.K. Tsotsos |
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978-3-540-79546-9 |
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800 |
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ICVS |
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OR; MV; MILAB; SIAI |
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no |
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BCNPCL @ bcnpcl @ SIV2008; IAM @ iam @ SIV2008 |
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962 |
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Author |
Juan J. Villanueva |
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Title |
Visualization, Imaging, and Image Processing, |
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2008 |
Publication |
Proceedings of the Eight IASTED International Conference |
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Palma de Mallorca (Spain) |
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978-0-88986-759-8 |
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no |
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ISE @ ise @ Vil2008 |
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1003 |
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Author |
David Vazquez; Antonio Lopez |
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Title |
Intrusion Classification in Intelligent Video Surveillance Systems |
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Report |
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Year |
2008 |
Publication |
Estudis d'Enginyeria Superior en Informática |
Abbreviated Journal |
UAB |
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Human detection; Car detection; Intrusion detection |
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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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no |
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ADAS @ adas @ VL2008a |
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1670 |
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Author |
Xavier Otazu; Maria Vanrell; C. Alejandro Parraga |
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Title |
Multiresolution Wavelet Framework Models Brightness Induction Effects |
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2008 |
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Vision Research |
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VR |
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48 |
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5 |
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733–751 |
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CIC |
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no |
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Call Number |
CAT @ cat @ OVP2008a |
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927 |
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