Browsing by Author "Ballesta Garcia, Maria"
Now showing items 1-20 of 20
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A full Stokes imaging polarimeter based on a consumer CMOS camera
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2019)
Conference lecture
Restricted access - publisher's policyNowadays, taking advantage of polarization allows enhancing the contrast of a detected object and extending the information of the scene compared to conventional intensity imagery, as the information added by polarimetric ... -
A LiDAR imaging system using temporal and polarization discrimination for turbid media
(2023)
Conference report
Restricted access - publisher's policyIn recent times, there has been a surge of interest in LiDAR imaging systems, particularly in outdoor terrestrial applications associated with computer vision. However, a significant hurdle preventing their widespread ... -
Activities in imaging through fog at CD6: polarimetric imaging
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Conference report
Restricted access - publisher's policyThe CD6 has recently developed a powerful line of research on polarimetric imaging. This field covers several applications in which the addition of polarization properties enables to enhance the contrast in detection. ... -
Activities in imaging through fog at CD6: polarized light propagation modelling
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Conference report
Restricted access - publisher's policyCurrently, in CD6, a new line of research devoted to polarimetric imaging is being developed. The use of polarization adds new information that is not reachable using other conventional imaging modes. In addition, recent ... -
An overview of lidar imaging systems for autonomous vehicles
(Multidisciplinary Digital Publishing Institute, 2019-10-01)
Article
Open AccessLidar imaging systems are one of the hottest topics in the optronics industry. The need to sense the surroundings of every autonomous vehicle has pushed forward a race dedicated to deciding the final solution to be ... -
Analysis of the performance of a polarized LiDAR imager in fog
(2022-11-07)
Article
Open AccessThis paper focuses on exploring ways to improve the performance of LiDAR imagers through fog. One of the known weaknesses of LiDAR technology is the lack of tolerance to adverse environmental conditions, such as the presence ... -
Detección de luz en medios turbios: simulaciones de Monte-Carlo para imagen activa usando luz polarizada o detección resuelta en el tiempo
(Universidad de Zaragoza (UZA), 2019)
Conference lecture
Restricted access - publisher's policyLa obtención de imágenes en condiciones climatológicas adversas (como niebla, lluvia y neblina), es uno de los problemas que afecta actualmente la investigación en el campo de la navegación, como resultado del creciente ... -
Endocardial infarct scar recognition by myocardial electrical impedance is not influenced by changes in cardiac activation sequence
(2017-12-02)
Article
Open Access -
Evaluación de modos de imagen polarimétrica en una cámara de niebla mediante el uso del contraste de imagen
(Comité de Optoelectrónica, 2021)
Conference lecture
Restricted access - publisher's policyMediante el uso de una cámara polarimétrica y una fuente de luz linealmente polarizada, se ha realizado una comparativa entre distintos modos de imagen polarimétrica e imagen de intensidad en un entorno de niebla controlado. ... -
Evaluation of new methods to assess infarcted myocardial tissue by measuring electrical impedance
(Universitat Politècnica de Catalunya, 2017-06)
Bachelor thesis
Open AccessIn order to obtain successful catheter ablation of ventricular arrhythmias in patients with chronic myocardial infarction is essential the precise identification of the infarct scar. Nowadays, endocardial voltage mapping ... -
Experimental characterization of polarized light backscattering in fog environments
(2023-11-01)
Article
Open AccessThis paper focuses on the experimental characterization of the polarization behavior of light backscattered through fog. A polarimetric orthogonal state contrast imager and an active, purely polarized white illuminator ... -
Imaging through fog: polarized light propagation modelling
(2021-05-13)
Conference lecture
Open Access -
Long-range polarimetric propagation in turbid media
(Universitat Politècnica de Catalunya, 2018-09-06)
Master thesis
Open AccessImaging through nebulous media encountered in nature, like fog, rain, and light haze, is on the most up-to-date research problems in the field of navigation as a result of the recent increasing interest in autonomous ... -
Medida de superficies 3D mediante imagen polarimétrica
(Comité de Optoelectrónica, 2021)
Conference lecture
Restricted access - publisher's policyLa polarización de la luz reflejada en un objeto aporta información sobre su índice de refracción, su rugosidad, y también de su forma. Así, esta propiedad de la luz puede ser útil en visión artificial para recuperar la ... -
Método de calibración de una cámara CMOS comercial para su uso como cámara polarimétrica
(Universidad de Zaragoza (UZA), 2019)
Conference lecture
Restricted access - publisher's policyLa imagen polarimétrica puede mejorar notablemente el contraste de un objeto, ampliando la información detectada de la escena mediante imágenes de intensidad convencionales. La información obtenida, además, es complementaria ... -
Modeling the use of LiDAR through adverse weather
(2023-07-12)
Part of book or chapter of book
Open AccessDue to the outstanding characteristics of LiDAR imaging systems, they seem essential for the consolidation of novel applications related to computer vision, in fields such as autonomous vehicles, outdoor recognition, and ... -
Modelling polarized pulsed LiDAR signals in scattering media: an approach for optimizing systems in real-world scenarios
(Optical Society of American (OSA), 2024-06-17)
Article
Open AccessAdverse weather conditions present a primary challenge for ground-based LiDAR imaging systems in outdoor applications. The use of polarization has been proposed as an effective filtering mechanism. However, the number of ... -
Polarimetric imaging vs. conventional imaging: evaluation of image contrast in fog
(2021-06-24)
Article
Open AccessWe compare conventional intensity imaging against different modes of polarimetric imaging by evaluating the image contrast of images taken in a controlled foggy environment. A small-scale fog chamber has been designed and ... -
Quantitative demonstration of the superiority of circularly polarized light in fog environments
(2022-01-15)
Article
Open AccessThe polarization behavior of light transmitted through scattering media is studied quantitatively. A division of focal plane (DOFP) imaging polarimeter modified with a wideband quarter-wave plate (QWP) is used to evaluate ... -
Temporal behavior and processing of the LiDAR signal in fog
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2023)
Conference lecture
Open AccessThe interest in LiDAR imaging systems has recently increased in outdoor ground-based applications related to computer vision, in fields like autonomous vehicles. However, for the complete settling of the technology, there ...
