Listar por autoría "638c15c5-e94c-4a14-8beb-4ba32c67c11f"
Mostrando ítems 1-20 de 25
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A new pedestrian detection descriptor based on the use of spatial recurrences
Serra Toro, Carlos; Traver Roig, Vicente Javier Springer-Verlag (2011)Recent work on pedestrian detection has relied on the concept of local co-occurences of features to propose higher-order, richer descriptors. While this idea has proven to be benefitial for this detection task, it fails ... -
A review of log-polar imaging for visual perception in robotics
Traver Roig, Vicente Javier; Bernardino, Alexandre Elsevier (2010)Log-polar imaging consists of a type of methods that represent visual information with a space-variant resolution inspired by the visual system of mammals. It has been studied for about three decades and has surpassed ... -
Analysis of single‑ and dual‑dictionary strategies in pedestrian classification
Traver Roig, Vicente Javier; Serra Toro, Carlos Springer Verlag (2018)Sparse coding has recently been a hot topic in visual tasks in image processing and computer vision. It has applications and brings benefts in reconstruction-like tasks and in classifcation-like tasks as well. However, ... -
Assisting therapists in assessing small animal phobias by computer analysis of video-recorded sessions
Castelló, Vicente; Traver Roig, Vicente Javier; Serrano-Zárate, Berenice; Montoliu Colás, Raul; Botella, Cristina Springer (2017)Behavioural Avoidance Tests (BATs) are commonly used for assessing phobias. While easy to deploy, these tests have some practical difficulties. For instance, therapists have to make distance estimations that are hard to ... -
Bag-of-words with aggregated temporal pair-wise word co-occurrence for human action recognition
Agustí Ballester, Pau; Traver Roig, Vicente Javier; Pla, Filiberto Elsevier (2014)The bag-of-words (BoW) representation has successfully been used for human action recognition from videos. However, one limitation of the standard BoW is that it ignores spatial and temporal relationships between the ... -
Cocaine-Induced Preference Conditioning: a Machine Vision Perspective
Traver Roig, Vicente Javier; Pla, Filiberto; MIQUEL, MARTA; Carbó Gas, María; Gil-Miravet, Isis; Guarque-Chabrera, Julian Springer (2018)Existing work on drug-induced synaptic changes has shown that the expression of perineuronal nets (PNNs) at the cerebellar cortex can be regulated by cocaine-related memory. However, these studies on animals have mostly ... -
Dedicación de los estudiantes en un contexto de aprendizaje cooperativo basado en proyectos: medición, análisis e implicaciones
Traver Roig, Vicente Javier; Pérez Martínez, Juan Manuel Sociedad de la Educación del IEEE (2009-05)Discovering the effort students devote to their studies is of key importance for an appropriate design of courses and syllabus. Although over the last years many studies have been carried out in this respect, few of them ... -
Una experiencia de aprendizaje cooperativo basado en proyectos en una asignatura de diseño de interfaces de usuario
Traver Roig, Vicente Javier Asociación de Enseñantes Universitarios de la Informática (2011)Hoy en día el diseño de la interacción tiene profundas implicaciones en la vida diaria de cada vez más gente. Dado este importante alcance del diseño, las asignaturas de disciplinas relacionadas con la interacción deben ... -
Exploring alternative spatial and temporal dense representations for action recognition
Agustí Ballester, Pau; Traver Roig, Vicente Javier; Pla, Filiberto; Marín Jiménez, Manuel J. Springer-Verlag (2011)The automatic analysis of video sequences with individuals performing some actions is currently receiving much attention in the computer vision community. Among the different visual features chosen to tackle the problem ... -
Exploring early classification strategies of streaming data with delayed attributes
Millán Giraldo, Mónica; Sánchez Garreta, Josep Salvador; Traver Roig, Vicente Javier Springer Verlag (Germany) (2009)In contrast to traditional machine learning algorithms, where all data are available in batch mode, the new paradigm of streaming data poses additional difficulties, since data samples arrive in a sequence and many hard ... -
Exploring some practical issues of SVM+: Is really privileged information that helps?
Serra Toro, Carlos; Traver Roig, Vicente Javier; Pla, Filiberto Elsevier (2014)Learning using privileged information (LUPI) is a machine learning paradigm which aims at improving classification by taking advantage of information that is only available at training time —not at test time. SVM+ is an ... -
Glimpse: A gaze-based measure of temporal salience
Traver Roig, Vicente Javier; Zorío Ventura, Judith; Leiva, Luis A. Multidisciplinary Digital Publishing Institute (2021-04-29)Temporal salience considers how visual attention varies over time. Although visual salience has been widely studied from a spatial perspective, its temporal dimension has been mostly ignored, despite arguably being of ... -
Head and eye egocentric gesture recognition for human-robot interaction using eyewear cameras
Marina-Miranda, Javier; Traver Roig, Vicente Javier IEEE (2022-06-08)Non-verbal communication plays a particularly important role in a wide range of scenarios in Human-Robot Interaction (HRI). Accordingly, this work addresses the problem of human gesture recognition. In particular, we focus ... -
Human gesture recognition using three-dimensional integral imaging
Traver Roig, Vicente Javier; Latorre Carmona, Pedro; Salvador Balaguer, Eva; Pla, Filiberto; Javidi, Bahram Optical Society of America (2014)Three-dimensional (3D) integral imaging allows one to reconstruct a 3D scene, including range information, and provides sectional refocused imaging of 3D objects at different ranges. This paper explores the potential use ... -
Log-polar mapping template design: From task-level requirements to geometry parameters
Traver Roig, Vicente Javier; Pla, Filiberto Elsevier (2008)The best parameters defining the geometry of a visual sensor generally depend on the particular visual task the sensor is intended to be used in. However, translating task requirements directly into low-level geometric ... -
Motion Analysis with the Radon Transform on Log-Polar Images
Traver Roig, Vicente Javier; Pla, Filiberto Springer US (2008-02)Image projections provide an effective way of describing image contents or estimate particular kinds of motion. However, most (if not all) of previous literature on projections has been done on Cartesian images. In contrast, ... -
On compiler error messages: what they say and what they mean
Traver Roig, Vicente Javier Hindawi Publishing Corporation (2010)Programmers often encounter cryptic compiler error messages that are difficult to understand and thus difficult to resolve. Unfortunately, most related disciplines, including compiler technology, have not paid much attention ... -
On-line classification of data streams with missing values based on reinforcement learning
Millán Giraldo, Mónica; Traver Roig, Vicente Javier; Sánchez Garreta, Josep Salvador Springer (2011)In some applications, data arrive sequentially and they are not available in batch form, what makes difficult the use of traditional classification systems. In addition, some attributes may lack due to some real-world ... -
On-line learning from streaming data with delayed attributes: A comparison of classifiers and strategies
Millán Giraldo, Mónica; Sánchez Garreta, Josep Salvador; Traver Roig, Vicente Javier Springer (2011-10)In many real applications, data are not all available at the same time, or it is not affordable to process them all in a batch process, but rather, instances arrive sequentially in a stream. The scenario of streaming data ... -
Online reconstruction-free single-pixel image classification
Latorre Carmona, Pedro; Traver Roig, Vicente Javier; Sánchez Garreta, Josep Salvador; Tajahuerce, Enrique Elsevier (2019-04)In single-pixel imaging, a series of illumination patterns are projected onto an object and the reflected or transmitted light from the object is integrated by a photodetector (the single-pixel detector). Then, from the ...