• openAccess   A Generative Method for Indoor Localization Using Wi-Fi Fingerprinting 

      Belmonte-Fernández, Óscar; Sansano-Sansano, Emilio; Caballer Miedes, Antonio; Montoliu Colás, Raul; García-Vidal, Rubén; Gascó Compte, Arturo MDPI (2021-03-30)
      Indoor localization is an enabling technology for pervasive and mobile computing applications. Although different technologies have been proposed for indoor localization, Wi-Fi fingerprinting is one of the most used ...
    • openAccess   A novel method for in-home Gait Speed estimation in Health Monitoring Using Bluetooth Low Energy 

      Aranda Polo, Fernando Jesús; Álvarez, Fernando J.; Parralejo Rodríguez, Felipe; Sansano-Sansano, Emilio; Montoliu Colás, Raul IEEE (2021)
      Gait speed (GS) is a crucial parameter in the evolution and diagnosis of degenerative illnesses. Nowadays, it is measured in clinical environments where it is impossible to keep track of all patients due to the lack of ...
    • openAccess   A radiosity-based method to avoid calibration for Indoor Positioning Systems 

      Belmonte-Fernández, Óscar; Montoliu Colás, Raul; Torres-Sospedra, Joaquín; Sansano-Sansano, Emilio; Chia-Aguilar, Daniel Elsevier (2018-09-01)
      Due to the widespread use of mobile devices, services based on the users current indoor location are growing in significance. Such services are developed in the Machine Learning and Experst Systems realm, and ranges from ...
    • openAccess   A realistic evaluation of indoor positioning systems based on Wi-Fi fingerprinting: The 2015 EvAAL–ETRI competition 

      Torres-Sospedra, Joaquín; Moreira, Adriano; Knauth, Stefan; Berkvens, Rafael; Montoliu Colás, Raul; Belmonte-Fernández, Óscar; Trilles, Sergio; Nicolau, Maria João; Meneses, Filipe; Costa, António; Koukofikis, Athanasios; Weyn, Maarten; Peremans, Herbert IOS press (2017-02)
      This paper presents results from comparing different Wi-Fi fingerprinting algorithms on the same private dataset. The algorithms where realized by independent teams in the frame of the off-site track of the EvAAL–ETRI ...
    • openAccess   A study of deep neural networks for human activity recognition 

      Sansano-Sansano, Emilio; Montoliu Colás, Raul; Belmonte-Fernández, Óscar Wiley (2020)
      Human activity recognition and deep learning are two fields that have attracted attention in recent years. The former due to its relevance in many application domains, such as ambient assisted living or health monitoring, ...
    • openAccess   Accuracy of a single position estimate for kNN-based fingerprinting indoor positioning applying error propagation theory 

      Perez-Navarro, Antoni; Montoliu Colás, Raul; Sansano-Sansano, Emilio; Martínez Garcia, marina; Femenia, Ruben; Torres-Sospedra, Joaquín IEEE (2023-06-23)
      Indoor Positioning Systems usually consider the average positioning error over a set of evaluation samples, or a quartile of that value, as the global error. However, they do not provide a metric for the uncertainty for ...
    • openAccess   An Indoor Positioning System Based on Wearables for Ambient-Assisted Living 

      Belmonte-Fernández, Óscar; Puertas-Cabedo, Adrian; Torres-Sospedra, Joaquín; Montoliu Colás, Raul; Trilles, Sergio MDPI (2016)
      The urban population is growing at such a rate that by 2050 it is estimated that 84% of the world’s population will live in cities, with flats being the most common living place. Moreover, WiFi technology is present in ...
    • openAccess   An occupancy simulator for a smart parking system: Developmental design and experimental considerations 

      Mendoza-Silva, Germán Martín; gould, michael; Montoliu Colás, Raul; Torres-Sospedra, Joaquín; Huerta, Joaquin MDPI (2019-05)
      This paper presents the development of a parking occupancy simulator to support a smart parking system. The simulator uses an agent-based approach to model drivers who follow activity plans and who may or may not use the ...
    • openAccess   Anomaly Detection in Activities of Daily Living with Linear Drift 

      Belmonte-Fernández, Óscar; Caballer Miedes, Antonio; Chinellato, Eris; Montoliu Colás, Raul; Sansano-Sansano, Emilio; García-Vidal, Rubén Springer (2020-07-01)
      Anomalyq detection in Activities of Daily Living (ADL) plays an important role in e-health applications. An abrupt change in the ADL performed by a subject might indicate that she/he needs some help. Another important issue ...
    • openAccess   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 ...
    • closedAccess   ATM-based analysis and recognition of handball team activities 

      Montoliu Colás, Raul; Martín Félez, Raúl; Torres-Sospedra, Joaquín; Rodríguez Pérez, Sergio Elsevier (2015)
      In this paper, a new methodology based on the Author Topic Model (ATM) method is presented to perform team activity recognition and analysis in handball videos. Instead of using players׳ trajectories we just rely on low ...
    • openAccess   Balance hídrico en jugadoras amateur de baloncesto: seguimiento en 10 partidos 

      Batalla Gavaldà, Abraham; Bofill Ródenas, Ana Maria; Corbi Soler, Francisco; Montoliu Colás, Raul; Planas-Anzano, Antoni Fundación Española de Dietistas-Nutricionistas (FEDN) (2016)
      Introducción: El objetivo del presente estudio fue analizar la evolución de las necesidades hídricas de un equipo de baloncesto femenino amateur, en situación de partido y durante toda una fase eliminatoria, a partir de ...
    • openAccess   BLE-GSpeed: A new BLE- based dataset to estimate user gait speed 

      Sansano-Sansano, Emilio; Aranda Polo, Fernando Jesús; Montoliu Colás, Raul; Alvarez, Fernando J. MDPI (2020-12-07)
      To estimate the user gait speed can be crucial in many topics, such as health care systems, since the presence of difficulties in walking is a core indicator of health and function in aging and disease. Methods for ...
    • openAccess   Color image registration under illumination changes 

      Montoliu Colás, Raul; Latorre Carmona, Pedro; Pla, Filiberto Springer Verlag (Germany) (2009)
      The estimation of parametric global motion has had a significant attention during the last two decades, but despite the great efforts invested, there are still open issues. One of the most important ones is related to ...
    • openAccess   Comparing the Performance of Indoor Localization Systems through the EvAAL Framework 

      Potortì, Francesco; Park, Sangjoon; Jimenez Ruiz, Antonio Ramon; Barsocchi, Paolo; GIROLAMI, MICHELE; Crivello, Antonino; Lee, So-Yeon; Lim, Jae Hyun; Torres-Sospedra, Joaquín; Seco, Fernando; Montoliu Colás, Raul; Mendoza-Silva, Germán Martín; María del Carmen, Pérez Rubio; Cristina, Losada Gutiérrez; Espinosa, Felipe; Macias-Guarasa, Javier MDPI (2017)
      In recent years, indoor localization systems have been the object of significant research activity and of growing interest for their great expected social impact and their impressive business potential. Application areas ...
    • openAccess   Comprehensive analysis of distance and similarity measures for Wi-Fi fingerprinting indoor positioning systems 

      Torres-Sospedra, Joaquín; Montoliu Colás, Raul; Trilles, Sergio; Belmonte-Fernández, Óscar; Huerta, Joaquin Elsevier (2015)
      Recent advances in indoor positioning systems led to a business interest in those applications and services where a precise localization is crucial. Wi-Fi fingerprinting based on machine learning and expert systems are ...
    • openAccess   Continuous Non-Invasive Assessment of Gait Speed Through Bluetooth Low Energy 

      Sansano-Sansano, Emilio; Montoliu Colás, Raul; Belmonte-Fernández, Óscar; Aranda Polo, Fernando Jesús; Alvarez, Fernando J. IEEE (2022-04-22)
      In the near future, as a consequence of the increasing percentage of elder people with respect to the total population, developed countries will face significant stress on their healthcare systems. The onset of some diseases ...
    • openAccess   Deployment of an open sensorized platform in a smart city context 

      Trilles, Sergio; Calia, Andrea; Belmonte-Fernández, Óscar; Torres-Sospedra, Joaquín; Montoliu Colás, Raul; Huerta, Joaquin Elsevier (2017-11)
      The race to achieve smart cities is producing a continuous effort to adapt new developments and knowledge, for administrations and citizens. Information and Communications Technology are called on to be one of the key ...
    • closedAccess   Discovering places of interest in everyday life from smartphone data 

      Montoliu Colás, Raul; Blom, Jan; Gatica-Perez, Daniel Springer (2013)
      In this paper, a new framework to discover places-of-interest from multimodal mobile phone data is presented. Mobile phones have been used as sensors to obtain location information from users’ real lives. A place-of-interest ...