This paper summarizes the proposal made by the SIANI team for the LifeCLEF 2015 Fish task. The ap... more This paper summarizes the proposal made by the SIANI team for the LifeCLEF 2015 Fish task. The approach makes use of standard detection techniques, applying a multiclass SVM based classifier on large enough Regions Of Interest (ROIs) automatically extracted from the provided video frames. The selection of the detection and classification modules is based on the best performance achieved for the validation dataset consisting of 20 annotated videos. For that dataset, the best classification achieved for an ideal detection module, reaches an accuracy around 40%.
The special characteristics of the ocean gliders propulsion scheme endows these vehicles with an ... more The special characteristics of the ocean gliders propulsion scheme endows these vehicles with an extremely high endurance, at the cost of a relatively low surge speed. Hence, gliders' trajectory is highly influenced by ocean currents, which can even exceed the vehicle's nominal velocity. This calls for intelligent path planning algorithms, fact that reflects in the high number of solutions proposed by researchers that can be found in recent bibliography. In this paper we propose a novel method to combine multiple ocean forecast models in order to feed the glider path-planner with as reliable as possible source information. The scheme is configured as a multi-evidence fusion that integrates factors such as sensor vs model validation, forecast stability and model historic performance.
2011 IEEE International Conference on Robotics and Automation, 2011
Unmanned Underwater Vehicles (UUVs) are com- monly used in Oceanography due to their relative low... more Unmanned Underwater Vehicles (UUVs) are com- monly used in Oceanography due to their relative low cost and wide range of capabilities. Gliders are a type of UUV particularly suitable for long-range missions because of their large autonomy. They change their buoyancy to dive and climb describing a vertical saw tooth pattern, which produces an effective but low horizontal speed. Consequently,
... for Perceptual User Interfaces Modesto Castrillón-Santana, Javier Lorenzo-Navarro, Oscar Déni... more ... for Perceptual User Interfaces Modesto Castrillón-Santana, Javier Lorenzo-Navarro, Oscar Déniz-Suárez, José Isern-González, and Antonio Falcón-Martel IUSIANI Edif. Ctral. ... 17. Christopher Wren, Ali Azarrbayejani, Trevor Darrell, and Alex Pentland. ...
El artículo analiza la predisposición —relativamente duradera— que los alumnos de traducción mues... more El artículo analiza la predisposición —relativamente duradera— que los alumnos de traducción muestran hacia las herramientas de la traducción asistida por ordenador (TAO). Estas herramientas son evaluadas de forma sesgada por los estudiantes, lo que tiene consecuencias en su utilización. Se observa cómo algunos de estos patrones actitudinales interfieren negativamente en el rendimiento del aprendizaje. Es por ello un objetivo deseable de todo programa de formación en este área desarrollar una actitud positiva en los futuros traductores hacia la incorporación y aprovechamiento de estas herramientas. Con este fin, se presenta un análisis de los componentes actitudinales cognitivos, afectivos y conductuales hacia las herramientas de TAO predominantes entre los estudiantes de la FTI de la Universidad de Las Palmas de Gran Canaria. Los resultados, obtenidos mediante encuesta, contribuirán a mejorar la evaluación de los aspectos determinantes en los que es necesario incidir en el aula y a...
Visual tracking based on pattern matching is a very used computer vision technique in a wide rang... more Visual tracking based on pattern matching is a very used computer vision technique in a wide range of applications [3]. Updating the template of reference is a crucial aspect for a correct working of this kind of algorithms. This work proposes a new approach to the updating problem in order to achieve a better performance and robustness of tracking. The proposed technique has been compared experimentally with other existing approaches with excellent results. The most important improvements of this approach is its parameter-free working, therefore no parameters have to be set up manually in order to tune the process. Besides , objects to be tracked can be rigid or de-formable, the system is adapted automatic and robustly to any situation. An added memory of patterns allows to improve the robustness. 1. Introduction Visual tracking based on pattern matching is a very used computer vision technique in a wide range of applications [3]. Its working is simple, a template of reference is s...
In this work, we present a hybrid control structure for a mobile robotic system which combines co... more In this work, we present a hybrid control structure for a mobile robotic system which combines concepts from homeostatic control and adaptive behavior. The homeostatic control consists of a set of control lo ops operating on state variables. These variables are computed from pre-categorical sensory data and also from high-level application results. The adaptive behavior is implemented by a fuzzy controller whose rules dynamically modify several system parameters, using the same structure to control both low-level homeostatic lo ops and high-level application tasks. The objective of this proposal is twofold: guarantee an acceptable image quality keeping the perceptual data into a homeostatic regime, and use the adaptive behavior to obtain a better resource management and dynamic response. To validate this proposal we have carried out some experiments using a mobile robot which performs a line following task under variable lighting conditions.
This paper summarizes the proposal made by the SIANI team for the LifeCLEF 2015 Fish task. The ap... more This paper summarizes the proposal made by the SIANI team for the LifeCLEF 2015 Fish task. The approach makes use of standard detection techniques, applying a multiclass SVM based classifier on large enough Regions Of Interest (ROIs) automatically extracted from the provided video frames. The selection of the detection and classification modules is based on the best performance achieved for the validation dataset consisting of 20 annotated videos. For that dataset, the best classification achieved for an ideal detection module, reaches an accuracy around 40%.
The special characteristics of the ocean gliders propulsion scheme endows these vehicles with an ... more The special characteristics of the ocean gliders propulsion scheme endows these vehicles with an extremely high endurance, at the cost of a relatively low surge speed. Hence, gliders' trajectory is highly influenced by ocean currents, which can even exceed the vehicle's nominal velocity. This calls for intelligent path planning algorithms, fact that reflects in the high number of solutions proposed by researchers that can be found in recent bibliography. In this paper we propose a novel method to combine multiple ocean forecast models in order to feed the glider path-planner with as reliable as possible source information. The scheme is configured as a multi-evidence fusion that integrates factors such as sensor vs model validation, forecast stability and model historic performance.
2011 IEEE International Conference on Robotics and Automation, 2011
Unmanned Underwater Vehicles (UUVs) are com- monly used in Oceanography due to their relative low... more Unmanned Underwater Vehicles (UUVs) are com- monly used in Oceanography due to their relative low cost and wide range of capabilities. Gliders are a type of UUV particularly suitable for long-range missions because of their large autonomy. They change their buoyancy to dive and climb describing a vertical saw tooth pattern, which produces an effective but low horizontal speed. Consequently,
... for Perceptual User Interfaces Modesto Castrillón-Santana, Javier Lorenzo-Navarro, Oscar Déni... more ... for Perceptual User Interfaces Modesto Castrillón-Santana, Javier Lorenzo-Navarro, Oscar Déniz-Suárez, José Isern-González, and Antonio Falcón-Martel IUSIANI Edif. Ctral. ... 17. Christopher Wren, Ali Azarrbayejani, Trevor Darrell, and Alex Pentland. ...
El artículo analiza la predisposición —relativamente duradera— que los alumnos de traducción mues... more El artículo analiza la predisposición —relativamente duradera— que los alumnos de traducción muestran hacia las herramientas de la traducción asistida por ordenador (TAO). Estas herramientas son evaluadas de forma sesgada por los estudiantes, lo que tiene consecuencias en su utilización. Se observa cómo algunos de estos patrones actitudinales interfieren negativamente en el rendimiento del aprendizaje. Es por ello un objetivo deseable de todo programa de formación en este área desarrollar una actitud positiva en los futuros traductores hacia la incorporación y aprovechamiento de estas herramientas. Con este fin, se presenta un análisis de los componentes actitudinales cognitivos, afectivos y conductuales hacia las herramientas de TAO predominantes entre los estudiantes de la FTI de la Universidad de Las Palmas de Gran Canaria. Los resultados, obtenidos mediante encuesta, contribuirán a mejorar la evaluación de los aspectos determinantes en los que es necesario incidir en el aula y a...
Visual tracking based on pattern matching is a very used computer vision technique in a wide rang... more Visual tracking based on pattern matching is a very used computer vision technique in a wide range of applications [3]. Updating the template of reference is a crucial aspect for a correct working of this kind of algorithms. This work proposes a new approach to the updating problem in order to achieve a better performance and robustness of tracking. The proposed technique has been compared experimentally with other existing approaches with excellent results. The most important improvements of this approach is its parameter-free working, therefore no parameters have to be set up manually in order to tune the process. Besides , objects to be tracked can be rigid or de-formable, the system is adapted automatic and robustly to any situation. An added memory of patterns allows to improve the robustness. 1. Introduction Visual tracking based on pattern matching is a very used computer vision technique in a wide range of applications [3]. Its working is simple, a template of reference is s...
In this work, we present a hybrid control structure for a mobile robotic system which combines co... more In this work, we present a hybrid control structure for a mobile robotic system which combines concepts from homeostatic control and adaptive behavior. The homeostatic control consists of a set of control lo ops operating on state variables. These variables are computed from pre-categorical sensory data and also from high-level application results. The adaptive behavior is implemented by a fuzzy controller whose rules dynamically modify several system parameters, using the same structure to control both low-level homeostatic lo ops and high-level application tasks. The objective of this proposal is twofold: guarantee an acceptable image quality keeping the perceptual data into a homeostatic regime, and use the adaptive behavior to obtain a better resource management and dynamic response. To validate this proposal we have carried out some experiments using a mobile robot which performs a line following task under variable lighting conditions.
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