Listar TE - Artículos por fecha de publicación
Mostrando ítems 1-20 de 93
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Bounded Irregular Pyramid: a new structure for color image segmentation.
Marfil-Robles, Rebeca
; Rodríguez-Fernández, Juan Antonio; Bandera-Rubio, Antonio Jesús; Sandoval-Hernández, Francisco (Elsevier, 2003-10-13)
This paper presents a new segmentation technique for color images. It relies on building an irregular pyramid into a regular one, presenting only nodes associated to homogeneous color regions. Hence, the size of the irregular ... -
Pyramid segmentation algorithms revisited.
Marfil-Robles, Rebeca; Molina-Tanco, Luis; Bandera-Rubio, Antonio Jesús; Rodríguez-Fernández, Juan Antonio; Sandoval-Hernández, Francisco (Elsevier, 2006-08)
The main goal of this work is to compare pyramidal structures proposed to solve segmentation tasks. Segmentation algorithms based on regular and irregular pyramids are described, together with the data structures and ... -
Real-time object tracking using bounded irregular pyramids.
Marfil-Robles, Rebeca; Molina-Tanco, Luis; Rodríguez-Fernández, Juan Antonio; Sandoval-Hernández, Francisco (Elsevier, 2007)
Target representation and localization is a central component in visual object tracking. In this paper a new approach for target representation and localization is presented. This approach tackles two of the most important ... -
A two-class brain computer interface to freely navigate through virtual worlds
Ron-Angevin, Ricardo; Díaz-Estrella, Antonio; Velasco-Álvarez, Francisco Javier (De Gruyter, 2009-05-26)
A brain computer interface that enables navigation through a virtual environment (VE) using four different navigation commands (turn right, turn left, move forward and move back) is presented. A graphical interface allows ... -
Fast gesture recognition based on a two-level representation.
Bandera-Rubio, Juan Pedro; Marfil-Robles, Rebeca; Bandera-Rubio, Antonio Jesús; Rodríguez-Fernández, Juan Antonio; Molina-Tanco, Luis; Sandoval-Hernández, Francisco[et al.] (Elsevier, 2009-10-01)
Towards developing an interface for human–robot interaction, this paper proposes a two-level approach to recognise gestures which are composed of trajectories followed by different body parts. In a first level, individual ... -
A new pyramid-based color image representation for visual localization
Urdiales-García, Amalia Cristina; Domínguez, Miguel; De-Trazegnies-Otero, Carmen Lourdes; Sandoval-Hernández, Francisco (Elsevier, 2010)
This paper presents a new algorithm to extract a color graph from a real image so that it can be efficiently represented in a compact way. The proposal presents two main novelties. First, a new PCA-based color feature ... -
A new multi-criteria optimization strategy for shared control in wheelchair assisted navigation
Urdiales-García, Amalia Cristina; Peula Palacios, José Manuel; Fernández-Carmona, Manuel; Barrue, Cristian; Perez, Eduardo Jesús; Sanchez-Tato, Isabel; del Toro, Jose Carlos; Galluppi, F.; Cortés, Ulises; Annichiaricco, Roberta; Caltagirone, Carlo; Sandoval-Hernández, Francisco[et al.] (Springer, 2010)
In todays aging society, many people require mobility assistance, that can be provided by robotized assistive wheelchairs with a certain degree of autonomy when manual control is unfeasible due to disability. Robot ... -
Free Virtual Navigation Using Motor Imagery Through an Asynchronous Brain–Computer Interface
Velasco-Álvarez, Francisco Javier; Ron-Angevin, Ricardo; Blanca-Mena, María José (MIT Press, 2010-02)
In this paper, an asynchronous brain-computer interface is presented that enables the control of a wheelchair in virtual environments using only one motor imagery task. The control is achieved through a graphical intentional ... -
A Novel Biologically Inspired Attention Mechanism for a Social Robot.
Palomino, Antonio J.; Marfil-Robles, Rebeca; Bandera-Rubio, Juan Pedro; Bandera-Rubio, Antonio Jesús (Hindawi Publishing Corporation, 2010-11-30)
In biological vision systems, the attention mechanism is responsible for selecting the relevant information from the sensed field of view. In robotics, this ability is specially useful because of the restrictions in ... -
Wheelchair collaborative control for disabled users navigating indoors.
Urdiales-García, Amalia Cristina; Fernández-Carmona, Manuel; Peula Palacios, José Manuel; Cortés, Ulises; Annichiaricco, Roberta; Caltagirone, Carlo; Sandoval-Hernández, Francisco[et al.] (Elsevier, 2011)
Objective: Mobility is of key importance for autonomous living. Persons with severe disabilities may be assisted by robotic wheelchairs when manual control is not possible. However, these persons should contribute to control ... -
Case-based reasoning emulation of persons for wheelchair navigation.
Peula Palacios, José Manuel; Urdiales-García, Amalia Cristina; Herrero-Reder, Ignacio; Fernández-Carmona, Manuel; Sandoval-Hernández, Francisco (Elsevier, 2012)
Our approach is based on extracting meaningful data from real users driving a power wheelchair autonomously. This data is then used to train a case-based reasoning (CBR) system that captures the specifics of the driver via ... -
Combining boundary and region features inside the combinatorial pyramid for topology-preserving perceptual image segmentation
Antúnez, Esther; Marfil-Robles, Rebeca; Bandera-Rubio, Antonio Jesús (Elsevier, 2012)
Combinatorial pyramids represent the image as a stack of successively reduced combi- natorial maps, which encode the whole image at different levels of abstraction. Within this framework, this paper proposes to conduct ... -
Semitransparent ZnO/PEDOT based hybrid inorganic/organic heterojunction thin dilm diodes prepared combined RF magnetron sputtering and elctrodeposition technique
Rodriguez-Moreno, Jorge; Navarrete-Astorga, Elena; Martín-Jiménez, Francisco de Paula; Schrebler, Ricardo; Ramos-Barrado, José R.; Dalchiele, Enrique A.[et al.] (Elsevier, 2012)
n-ZnO/p-poly(3,4-ethylenedioxythiophene) (PEDOT) semitransparent inorganic–organic hybrid vertical heterojunction thin film diodes have been fabricated with PEDOT and ZnO thin films grown by electrodeposition and radio-frequency ... -
Data mining and statistical techniques for characterizing the performance of thin-film photovoltaic modules
Moreno-Sáez, Rafael; Sidrach-de-Cardona, Mariano; Mora-López, Llanos (Elsevier, 2013)
A method for characterizing the performance ratio of thin-film photovoltaic modules based on the use of data mining and statistical techniques is developed. In general, this parameter changes when modules are working in ... -
Comparative analysis of energy produced by photovoltaic modules with anti-soiling coated surface in arid climates
Piliougine Rocha, Michel; Cañete Torralvo, Cristina; Moreno-Sáez, Rafael Jesús; Carretero-Rubio, Jesús Eduardo; Hirose, Jun-ichi; Ogawa, Shuichiro; Sidrach-de-Cardona-Ortin, Mariano[et al.] (Elsevier, 2013)
Dust accumulation on the surface of photovoltaic modules decreases the transmittance and produces power losses and consequently daily energy losses. These losses are important in large photovoltaic power plants, mainly in ... -
Modelling the distribution of solar spectral irradiance using data mining techniques
Moreno-Sáez, Rafael Jesús; Mora-López, Llanos (Elsevier, 2013)
A procedure for modelling the distribution of solar spectral irradiance is proposed. It uses both statistical and data mining techniques. As a result, it is possible to simulate solar spectral irradiance distribution using ... -
On the construction of a skill-based wheelchair navigation profile.
(IEEE, 2013)Assisted wheelchair navigation is of key importance for persons with severe disabilities. The problem has been solved in different ways, usually based on the shared control paradigm. This paradigm consists of giving the ... -
Electrochemically grown vertically aligned ZnO nanorod array/p+-Si (100) heterojunction contact diodes
Rodriguez-Moreno, Jorge; Navarrete-Astorga, Elena; Romero, Rocío; Martín-Jiménez, Francisco de Paula; Schrebler, Ricardo; Ramos-Barrado, José R.[et al.] (Elsevier, 2013)
ZnO nanorod array/p+-Si vertical heterojunction diodes, in which the ZnO nanorods have been grown by electrodeposition onto a SnO2:F thin film/glass substrate, have been fabricated by the direct-bonding technique. The ... -
Polyvinylpyrrolidone–LiClO4 solid polymer electrolyte and its application in transparent thin film supercapacitors
Rodriguez-Moreno, Jorge; Navarrete-Astorga, Elena; Dalchiele, Enrique A.; Sánchez, Luis; Martín-Jiménez, Francisco de Paula; Ramos-Barrado, José Ramón[et al.] (Elsevier, 2013)
Films of PVP (polyvinylpyrrolidone) and LiClO4 have been obtained by dip coating to be used as solid ionic conductors in transparent energy storage systems. The dependence of the ionic conductivity of PVP/LiClO4 films on ... -
Audio-cued motor imagery-based brain–compute rinterface: Navigation through virtual and real environments
Velasco-Álvarez, Francisco Javier; Ron-Angevin, Ricardo; Da Silva-Sauer, Leandro; Sancha-Ros, Salvador (Elseiver, 2013-02-13)
he aim of this work is to provide a navigation paradigm that could be used to control a wheelchair through a brain-computer interface (BCI). In such a case, it is desirable to control the system without a graphical interface ...