Now showing items 1-20 of 34

    • A mobile robot agent for gas leak source detection 

      Martínez Lacasa, Daniel; Pallejà Cabrè, Tomàs; Moreno Blanc, Javier; Tresánchez Ribes, Marcel; Teixidó Cairol, Mercè; Font Calafell, Davinia; Pardo, Antonio; Marco, Santiago; Palacín Roca, Jordi (Springer International Publishing Switzerland, 2014)
      This paper presents an autonomous agent for gas leak source detec-tion. The main objective of the robot is to estimate the localization of the gas leak source in an indoor environment without any human intervention. The ...
    • A proposal for automatic fruit harvesting by combining a low cost stereovision camera and a robotic arm 

      Font Calafell, Davinia; Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Runcan Marius, David; Moreno Blanc, Javier; Martínez Lacasa, Daniel; Teixidó Cairol, Mercè; Palacín Roca, Jordi (MDPI, 2014)
      This paper proposes the development of an automatic fruit harvesting system by combining a low cost stereovision camera and a robotic arm placed in the gripper tool. The stereovision camera is used to estimate the size, ...
    • A proposal of low-cost and low-power embedded wireless image sensor node for IoT applications 

      Tresánchez Ribes, Marcel; Pujol, Alain; Pallejà Cabrè, Tomàs; Martínez Lacasa, Daniel; Clotet Bellmunt, Eduard; Palacín Roca, Jordi (Elsevier, 2018)
      This paper proposes the design of a low-cost, low-power and small size image acquisition device to be used in Internet of Things (IoT) applications which collects, processes and sends image data through a 2.4GHz Wi-Fi ...
    • An embedded real-time red peach detection system based on an OV7670 camera, ARM Cortex-M4 processor and 3D Look-Up Tables 

      Teixidó Cairol, Mercè; Font Calafell, Davinia; Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Nogués Aymamí, Miquel; Palacín Roca, Jordi (Molecular Diversity Preservation International (MDPI), 2012)
      This work proposes the development of an embedded real-time fruit detection system for future automatic fruit harvesting. The proposed embedded system is based on an ARM Cortex-M4 (STM32F407VGT6) processor and an Omnivision ...
    • An image processing method for in-line nectarine variety verification based on the comparison of skin feature histogram vectors 

      Font Calafell, Davinia; Tresánchez Ribes, Marcel; Pallejà Cabrè, Tomàs; Teixidó Cairol, Mercè; Martínez Lacasa, Daniel; Moreno Blanc, Javier; Palacín Roca, Jordi (Elsevier, 2014)
      This paper presents an image processing method for in-line automatic and individual nectarine variety verification in a fruit-packing line based on the use of feature histogram vectors obtained by concatenating the ...
    • An inexpensive wireless smart camera system for IoT applications based on an ARM Cortex-M7 microcontroller 

      Tresánchez Ribes, Marcel; Pujol, A.; Pallejà Cabrè, Tomàs; Martínez, D.; Clotet Bellmunt, Eduard; Palacín Roca, Jordi (International Association for Sharing Knowledge and Sustainability, 2019)
      This paper presents a new proposal of a low-cost and low-power wireless smart camera device, designed to be used as an inexpensive smart image acquisition edge node for Internet of Things (IoT). Taking the advantages of ...
    • Application of an Array of Metal-Oxide Semiconductor Gas Sensors in an Assistant Personal Robot for Early Gas Leak Detection 

      Palacín Roca, Jordi; Martínez Piqué, David; Clotet Bellmunt, Eduard; Pallejà Cabrè, Tomàs; Burgués, Javier; Fonollosa, Jordi; Pardo, Antonio; Marco, Santiago (Molecular Diversity Preservation International (MDPI), 2019)
      This paper proposes the application of a low-cost gas sensor array in an assistant personal robot (APR) in order to extend the capabilities of the mobile robot as an early gas leak detector for safety purposes. The gas ...
    • Bioinspired electronic white cane implementation based on a LIDAR, a tri-axial accelerometer and a tactile belt 

      Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Teixidó Cairol, Mercè; Palacín Roca, Jordi (Molecular Diversity Preservation International (MDPI), 2010)
      This work proposes the creation of a bioinspired electronic white cane for blind people using the whiskers principle for short-range navigation and exploration. Whiskers are coarse hairs of an animal's face that tells the ...
    • Characterization of a Low-Cost Optical Flow Sensor When Using an External Laser as a Direct Illumination Source 

      Font Calafell, Davinia; Tresánchez Ribes, Marcel; Pallejà Cabrè, Tomàs; Teixidó Cairol, Mercè; Palacín Roca, Jordi (MDPI, 2011)
      In this paper, a low cost optical flow sensor is combined with an external laser device to measure surface displacements and mechanical oscillations. The measurement system is based on applying coherent light to a ...
    • Counting red grapes in vineyards by detecting specular spherical reflection peaks in RGB images obtained at night with artificial illumination 

      Font Calafell, Davinia; Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Teixidó Cairol, Mercè; Martínez Lacasa, Daniel; Moreno Blanc, Javier; Palacín Roca, Jordi (Elsevier, 2014)
      This paper presents an automatic method for counting red grapes from high-resolution images of vineyards taken under artificial lighting at night. The proposed method is based on detecting the specular reflection peaks ...
    • Definition of linear color models in the RGB vector color space to detect red peaches in orchard images taken under natural illumination 

      Teixidó Cairol, Mercè; Font Calafell, Davinia; Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Nogués Aymamí, Miquel; Palacín Roca, Jordi (Molecular Diversity Preservation International (MDPI), 2012)
      This work proposes the detection of red peaches in orchard images based on the definition of different linear color models in the RGB vector color space. The classification and segmentation of the pixels of the image is ...
    • Desarrollo de un caso practico de aprendizaje combinando vision artificial y un brazo robot 

      Pallejà Cabrè, Tomàs; Teixidó Cairol, Mercè; Font Calafell, Davinia; Tresánchez Ribes, Marcel; Palacín Roca, Jordi (Sociedad de Educación del IEEE (IEEE-ES), 2013)
      This work describes a learning case developed in the University of Lleida, Spain. This proposal is addressed to third course engineering students that must combine knowledge from artificial vision and robotic control to ...
    • Design and Implementation of a Biomimetic Turtle Hydrofoil for an Autonomous Underwater Vehicle 

      Font Calafell, Davinia; Tresánchez Ribes, Marcel; Siegentahler, Cedric; Pallejà Cabrè, Tomàs; Teixidó Cairol, Mercè; Pradalier, Cedric; Palacín Roca, Jordi (MDPI, 2011)
      This paper presents the design and implementation of a turtle hydrofoil for an Autonomous Underwater Vehicle (AUV). The final design of the AUV must have navigation performance like a turtle, which has also been the ...
    • Design, Implementation and Validation of the Three-Wheel Holonomic Motion System of the Assistant Personal Robot (APR) 

      Moreno Blanc, Javier; Clotet Bellmunt, Eduard; Lupiañez, Ruben; Tresánchez Ribes, Marcel; Martínez Lacasa, Daniel; Pallejà Cabrè, Tomàs; Casanovas Salas, Jordi; Palacín Roca, Jordi (Sensors, 2016)
      This paper presents the design, implementation and validation of the three-wheel holonomic motion system of a mobile robot designed to operate in homes. The holonomic motion system is described in terms of mechanical design ...
    • Didactic platform for DC motor speed and position control in Z-plane 

      Pallejà Cabrè, Tomàs; Saiz Vela, Albert; Tresánchez Ribes, Marcel; Moreno Blanc, Javier; Ribó Pablo, Josep; Clarià Sancho, Francisco (Elsevier, 2021)
      This paper describes how to implement a low-cost didactic platform designed to teach or reinforce discrete control theory concepts. The controllers used in this work (P, PI, PD, and PID) are suitable for undergraduate ...
    • Evaluation of the color-based image segmentation capabilities of a compact mobile robot agent based on Google Android Smartphone 

      Martínez Lacasa, Daniel; Moreno Blanc, Javier; Font Calafell, Davinia; Tresánchez Ribes, Marcel; Pallejà Cabrè, Tomàs; Teixidó Cairol, Mercè; Palacín Roca, Jordi (Springer International Publishing Switzerland, 2013)
      This paper presents the evaluation of the image segmentation capabilities of a mobile robot agent based on a Google Android Smartphone. The mobile agent was designed to operate autonomously in an environment inspired in a ...
    • Experimental characterization of the twin-eye laser mouse sensor 

      Moreno Blanc, Javier; Clotet Bellmunt, Eduard; Martínez Lacasa, Daniel; Tresánchez Ribes, Marcel; Pallejà Cabrè, Tomàs; Palacín Roca, Jordi (Hindawi Publishing Corporation, 2016)
      This paper proposes the experimental characterization of a laser mouse sensor used in some optical mouse devices. The sensor characterized is called twin-eye laser mouse sensor and uses the Doppler effect to measure ...
    • Implementation of a robust absolute virtual head mouse combining face detection, template matching and optical flow algorithms 

      Pallejà Cabrè, Tomàs; Guillamet, A.; Tresánchez Ribes, Marcel; Teixidó Cairol, Mercè; Rebate, Carlos; Palacín Roca, Jordi; Viso, A. F. del (Springer Verlag, 2013)
      This work proposes the implementation of a robust absolute virtual head mouse based on the interpretation of head movements and face gestures captured with a frontal camera. The procedure combines face detection, ...
    • Innovative LIDAR 3D dynamic measurement system to estimate fruit-tree leaf area 

      Sanz Cortiella, Ricardo; Llorens Calveras, Jordi; Escolà i Agustí, Alexandre; Arnó Satorra, Jaume; Ribes Dasi, Manuel; Masip Vilalta, Joan; Camp, Ferran; Gràcia Aguilà, Felipe José; Solanelles Batlle, Francesc; Planas de Martí, Santiago; Pallejà Cabrè, Tomàs; Palacín Roca, Jordi; Gregorio López, Eduard; Del Moral Martínez, Ignacio; Rosell Polo, Joan Ramon (Molecular Diversity Preservation International (MDPI), 2011)
      In this work, a LIDAR-based 3D Dynamic Measurement System is presented and evaluated for the geometric characterization of tree crops. Using this measurement system, trees were scanned from two opposing sides to obtain two ...
    • Measuring gait using a ground laser range sensor 

      Pallejà Cabrè, Tomàs; Teixidó Cairol, Mercè; Tresánchez Ribes, Marcel; Palacín Roca, Jordi (Molecular Diversity Preservation International (MDPI), 2009)
      This paper describes a mesurement system designed to register the displacement of the legs using a two-dimensional laser range sensor with a scanning plane parallel to the ground and extract gait parameters. In the proposed ...