Recent Submissions

  • Building a Mobile Robot for a Floor-Cleaning Operation in Domestic Environments 

    Palacín Roca, Jordi; Salse, José Antonio; Valgañón, Ignasi; Clua, Xavier (Institute of Electrical and Electronics Engineers, 2004)
    Domestic robots are one of the new industrial challenges. In this paper, a floor-cleaning robot specifically designed for this function is proposed. Aspects such as sensor placement, motor control, robot control, and ...
  • Measuring Gas Concentration and Wind Intensity in a Turbulent Wind Tunnel with a Mobile Robot 

    Martínez, Dani; Moreno Blanc, Javier; Tresánchez Ribes, Marcel; Clotet Bellmunt, Eduard; Jiménez Soto, Juan Manuel; Magrans, Rudys; Pardo, Antonio; Marco, Santiago; Palacín Roca, Jordi (Hindawi Publishing Corporation, 2016)
    This paper presents themeasurement of gas concentration and wind intensity performed with amobile robot in a customturbulent wind tunnel designed for experimentation with customizable wind and gas leak sources.This paper ...
  • Dynamic Compact Thermal Models With Multiple Power Sources: Application to an Ultrathin Chip Stacking Technology 

    Palacín Roca, Jordi; Salleras, Marc; Samitier, Josep; Marco, Santiago (Institute of Electrical and Electronics Engineers, 2005)
    Whereas numerical modeling using finite-element methods (FEM) can provide transient temperature distribution in the component with enough accuracy, it is of the most importance the development of compact dynamic thermal ...
  • The Effects of Coronary Occlusion Location on the RR Signal 

    Clarià Sancho, Francisco; Vallverdú, Montserrat; Caminal Magrans, Pere (Institute of Electrical and Electronics Engineers, 2002)
    In this article, we carry out the study of the energy contribution of theRRsignal in the three frequency bands (LF, MF, and HF) during PTCA. Furthermore, variables based on instantaneous frequency and on group delay ...
  • Characterization of Daytime Sleepiness by Time–Frequency Measures of EEG Signals 

    Melia, Umberto; Guaita, Marc; Vallverdú, Montserrat; Clarià Sancho, Francisco; Montserrat, Josep M.; Vilaseca, Isabel; Salamero, Manel; Gaig, Carles; Caminal, Pere; Santamaria, Joan (Springer Verlag, 2015)
    Excessive daytime sleepiness (EDS) is one of the main symptoms of several sleep-related disorders with a great impact on patient lives. While many studies have been carried out in order to assess daytime sleepiness, automatic ...
  • DNA Binding Site Characterization by Means of Rényi Entropy Measures on Nucleotide Transitions 

    Perera, Alexandre; Vallverdú, Montserrat; Clarià Sancho, Francisco; Soria, José Manuel; Caminal Magrans, Pere (Institute of Electrical and Electronics Engineers, 2008)
    —In this work, parametric information-theory measures for the characterization of binding sites in DNA are extended with the use of transitional probabilities on the sequence. We propose the use of parametric uncertainty ...
  • Project-Based Learning Example: Controlling an Educational Robotic Arm With Computer Vision 

    Pallejà Cabrè, Tomàs; Teixidó Cairol, Mercè; Font Calafell, Davinia; Tresánchez Ribes, Marcel; Palacín Roca, Jordi (Institute of Electrical and Electronics Engineers, 2013)
    This paper describes a project-based learning case example developed at the University of Lleida, Spain. This proposal was addressed to third-year engineering students and combines knowledge from computer vision and ...
  • A Time-Domain Method for the Analysis of Thermal Impedance Response Preserving the Convolution Form 

    Carmona, Manuel; Marco, Santiago; Palacín Roca, Jordi; Samitier, Josep (Institute of Electrical and Electronics Engineers, 1999)
    The study of the thermal behavior of complex packages as multichip modules (MCM’s) is usually carried out by measuring the so-called thermal impedance response, that is: the transient temperature after a power step. ...
  • Center-pivot automatization for agrochemical use 

    Palacín Roca, Jordi; Salse, J.A.; Clua, Xavier; Arnó Satorra, Jaume; Blanco Ortiz, Ricardo; Zanuy, C. (Elsevier, 2005)
    This paper presents an agrochemical application system that could be incorporated into existing irrigating center-pivots. The system consisted of a hydraulic circuit with emitters, where the dose was individually controlled ...
  • The optical mouse for indoor mobile robot odometry measurement 

    Palacín Roca, Jordi; Valgañon, I.; Pernia, R. (Elsevier, 2006)
    In this work the optical mouse is proposed for indoor odometry measurement in mobile robot applications. The optical mouse is a very low-cost sensor and has the advantage that the measured displacement is independent from ...
  • Sensitivity of tree volume measurement to trajectory errors from a terrestrial LIDAR scanner 

    Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Teixidó Cairol, Mercè; Sanz Cortiella, Ricardo; Rosell Polo, Joan Ramon; Palacín Roca, Jordi (Elsevier, 2010)
    The use of terrestrial LIDARs in agriculture enables the measurement of structural parameters of the orchards such as the volume of the trees. The sequence of two-dimensional scans performed with a LIDAR attached to a ...
  • 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 ...
  • The optical mouse sensor as an incremental rotary encoder 

    Tresánchez Ribes, Marcel; Pallejà Cabrè, Tomàs; Teixidó Cairol, Mercè; Palacín Roca, Jordi (Elsevier, 2009)
    In this paper, a new application and capabilities of the sensor of the optical mouse are presented. An inexpensive incremental rotary encoder is built based on a mechanical assembly where the sensor is at a fixed distance ...
  • Modeling floor-cleaning coverage performances of some domestic mobile robots in a reduced scenario 

    Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Teixidó Cairol, Mercè; Palacín Roca, Jordi (Elsevier, 2010)
    In this paper, floor-cleaning coverage performances of some domestic mobile robots are measured, analyzed and modeled. Results obtained in a reduced scenario show that floor-cleaning coverage is complete in all cases if ...
  • Improved Multiexponential Transcient Spectroscopy By Iterative Deconvolution 

    Marco, Santiago; Palacín Roca, Jordi; Samitier, Josep (Institute of Electrical and Electronics Engineers, 2001)
    The analysis of multiexponential decays is challenging because of their complex nature. When analyzing these signals, not only the parameters, but also the orders of the models, have to be estimated. Here, we present ...
  • Suboptimal Filtering and Nonlinear Time Scale Transformation for the Analysis of Multiexponential Decays 

    Palacín Roca, Jordi; Marco, Santiago; Samitier, Josep (IEEE, 2001)
    Multiexponential decays may contain time-constants differing in several orders of magnitudes. In such cases, uniform sampling results in very long records featuring a high degree of oversampling at the final part of the ...
  • Using the image acquisition capabilities of the optical mouse sensor to build an absolute rotary encoder 

    Tresánchez Ribes, Marcel; Pallejà Cabrè, Tomàs; Teixidó Cairol, Marcel; Palacín Roca, Jordi (Elsevier, 2010)
    In this paper, the optical mouse sensor is proposed as the main sensor of an absolute rotary encoder. The image acquired by the optical sensor is used to read a positioning binary code printed on an internal rotary surface ...
  • 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 ...
  • 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, ...
  • 128 x 128 CMOS Image Sensor With Analog Memory for Synchronous Image Capture 

    Chapinal, Genis; Bota, Sebastian A.; Moreno, Mauricio; Palacín Roca, Jordi; Herms, Atilà (Institute of Electrical and Electronic Engineers, 2002)
    A 128 x 128 CMOS imager that permits synchronous capture is presented. The sensor combines the best of CMOS imagers (low-power, random readout, nondestructive readout, single supply voltage…) and synchronous capture ...