Now showing items 1-9 of 9

    • A LiDAR imaging system using temporal and polarization discrimination for turbid media 

      Ballesta Garcia, Maria; Peña Gutiérrez, Sara; Rodríguez Aramendía, Ana; García Gómez, Pablo; Rodrigo Arcay, Noel; Royo Royo, Santiago (2023)
      Conference report
      Restricted access - publisher's policy
      In 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 ...
    • A Preliminary study of deep learning sensor fusion for pedestrian detection 

      Chávez Plascencia, Alfredo; García Gómez, Pablo; Bernal Pérez, Eduard; Mas Giménez, Gerard de; Casas Pla, Josep Ramon; Royo Royo, Santiago (Multidisciplinary Digital Publishing Institute (MDPI), 2023-04)
      Article
      Open Access
      Most pedestrian detection methods focus on bounding boxes based on fusing RGB with lidar. These methods do not relate to how the human eye perceives objects in the real world. Furthermore, lidar and vision can have difficulty ...
    • Analysis of the performance of a polarized LiDAR imager in fog 

      Ballesta Garcia, Maria; Peña Gutiérrez, Sara; Rodríguez Aramendía, Ana; García Gómez, Pablo; Rodrigo Arcay, Noel; Bobi Olmo, Aleix Ramón; Royo Royo, Santiago (2022-11-07)
      Article
      Open Access
      This 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 ...
    • Data fusion of lidar and RGB cameras 

      García Gómez, Pablo (Universitat Politècnica de Catalunya, 2018-07-19)
      Master thesis
      Restricted access - confidentiality agreement
      Light Detection and Ranging - LiDAR or LIDAR - has traditionally been used for making high-resolution maps in a huge variety of geological applications due to its 2D and 3D point cloud mappings. Additionally, it has recently ...
    • Geometric model and calibration method for a solid-state LiDAR 

      García Gómez, Pablo; Royo Royo, Santiago; Rodrigo Arcay, Noel; Casas Pla, Josep Ramon (Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-20)
      Article
      Open Access
      This paper presents a novel calibration method for solid-state LiDAR devices based on a geometrical description of their scanning system, which has variable angular resolution. Determining this distortion across the entire ...
    • Gradient-based metrics for the evaluation of image defogging 

      Mas Giménez, Gerard de; García Gómez, Pablo; Casas Pla, Josep Ramon; Royo Royo, Santiago (Multidisciplinary Digital Publishing Institute (MDPI), 2023-09-09)
      Article
      Open Access
      Fog, haze, or smoke are standard atmospheric phenomena that dramatically compromise the overall visibility of any scene, critically affecting features such as the illumination, contrast, and contour detection of objects. ...
    • Laser feedback interferometry with semiconductor lasers 

      García Gómez, Pablo (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Open Access
      Covenantee:   University of Queensland
      Laser Feedback Interferometry is based on the self-mixing effect. When light emitted from a laser reflects in a target and is reinjected into its cavity, the optical parameters of the laser change providing information ...
    • Quantitative demonstration of the superiority of circularly polarized light in fog environments 

      Peña Gutiérrez, Sara; Ballesta Garcia, Maria; García Gómez, Pablo; Royo Royo, Santiago (2022-01-15)
      Article
      Open Access
      The 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 

      Ballesta Garcia, Maria; Rodríguez Aramendía, Ana; García Gómez, Pablo; Rodrigo Arcay, Noel; Royo Royo, Santiago (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2023)
      Conference lecture
      Open Access
      The 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 ...