Recent Submissions

  • Kinect v2 sensor-based mobile terrestrial laser scanner for agricultural outdoor applications 

    Rosell Polo, Joan Ramon; Gregorio López, Eduard; Gené, Jordi; Llorens Calveras, Jordi; Torrent Martí, Xavier; Arnó Satorra, Jaume; Escolà i Agustí, Alexandre (Institute of Electrical and Electronics Engineers (IEEE), 2017-02-02)
    Mobile terrestrial laser scanners (MTLS), based on light detection and ranging (LiDAR) sensors, are used worldwide in agricultural applications. MTLS are applied to characterize the geometry and the structure of plants and ...
  • Assessment of the FAO traditional land evaluation methods, a case study: Iranian Land Classification method 

    Bagheri Bodaghabadi, Mohsen; Martínez Casasnovas, José Antonio; Khakili, P.; Masihabadi, M. H.; Gandomkar, Amir (Wiley, 2015-09-03)
    Land evaluation is a critical step in land-use planning. Although many methods have been developed since the formulation of the FAO framework for land evaluation, several of the more traditional approaches still remain in ...
  • Evaluation of peach tree growth characteristics under different irrigation strategies by LIDAR system: preliminary results 

    Pascual Roca, Miquel; Villar Mir, Josep Ma.; Rufat i Lamarca, Josep; Rosell Polo, Joan Ramon; Sanz Cortiella, Ricardo; Arnó Satorra, Jaume (Internacional Society for Horticultural Science (ISHS), 2011)
    In a four-year experiment on peach (Prunus persica L. Batsch ‘Andross’) for fruit processing, canopy volume and tree shape were evaluated by scanning trees with a Light Detection and Ranging (LIDAR) system: a non-destructive ...
  • Classifying Agricultural Terrain for Machinery Traversability Purposes 

    Yandun, Francisco J.; Gregorio López, Eduard; Zúñiga, Marcos; Escolà i Agustí, Alexandre; Rosell Polo, Joan Ramon; Auat Cheein, Fernando A. (ElsevierIFAC (International Federation of Automatic Control), 2016)
    The detection of the type of soil surface where a robotic vehicle is navigating on is an important issue for performing several agricultural tasks. Satisfactory results in activities such as seeding, plowing, fertilizing, ...
  • Setting the optimal length to be scanned in rows of vines by using mobile terrestrial laser scanners 

    Arnó Satorra, Jaume; Escolà i Agustí, Alexandre; Rosell Polo, Joan Ramon (Springer Science+Business Media, 2017-02-28)
    Mapping the leaf area index (LAI) by using mobile terrestrial laser scanners (MTLS) is of significance for viticulture. LAI is related to plant vigour and foliar development being an important parameter for many agricultural ...
  • Analysis of vegetation indices to determine nitrogen application and yield prediction in maize (Zea mays L.) from a standard UAV service 

    Maresma, Ángel; Ariza, Mar; Martínez, Elías; Lloveras Vilamanyà, Jaume; Martínez Casasnovas, José Antonio (MDPI, 2016)
    The growing use of commercial unmanned aerial vehicles (UAV) and the need to adjust N fertilization rates in maize (Zea mays L.) currently constitute a key research issue. In this study, different multispectral vegetation ...
  • Multi-tree woody structure reconstruction from mobile terrestrial laser scanner point clouds based on a dual neighbourhood connectivity graph algorithm 

    Méndez, Valeriano; Rosell Polo, Joan Ramon; Pascual Roca, Miquel; Escolà i Agustí, Alexandre (Elsevier, 2016)
    A process is presented for the vector reconstruction of fruit plantations based on the model developed by Verroust and Lazarus. To solve occlusion problems, the use of a dual graph of local and extended connectivity is ...
  • SIMLIDAR – Simulation of LIDAR performance in artificially simulated orchards 

    Méndez, Valeriano; Catalán, Heliodoro; Rosell Polo, Joan Ramon; Arnó Satorra, Jaume; Sanz Cortiella, Ricardo; Tarquis, Ana (Elsevier, 2012)
    SIMLIDAR is an application developed in C++ that generates an artificial orchard using a Lindenmayer system. The application simulates the lateral interaction between the artificial orchard and a laser scanner or LIDAR ...
  • Relationship between tree row LIDAR-volume and leaf area density for fruit orchards and vineyards obtained with a LIDAR 3D Dynamic Measurement System 

    Sanz Cortiella, Ricardo; Rosell Polo, Joan Ramon; Llorens Calveras, Jordi; Gil Moya, Emilio; Planas de Martí, Santiago (Elsevier, 2013)
    In this work, a LIDAR 3D Dynamic Measurement System, based on a Two-Dimensional Terrestrial Laser-LIDAR Scanner (2D TLS), was used for the geometric characterisation of tree-row crops (apple trees, pear trees and vineyards). ...
  • LiDAR simulation in modelled orchards to optimise the use of terrestrial laser scanners and derived vegetative measures 

    Méndez, Valeriano; Catalán, Heliodoro; Rosell Polo, Joan Ramon; Arnó Satorra, Jaume; Sanz Cortiella, Ricardo (Elsevier, 2013)
    Light detection and ranging (LiDAR) technology is beginning to have an impact on agriculture. Canopy volume and/or fruit tree leaf area can be estimated using terrestrial laser sensors based on this technology. However, ...
  • Deciduous tree reconstruction algorithm based on cylinder fitting from mobile terrestrial laser scanned point clouds 

    Méndez, Valeriano; Rosell Polo, Joan Ramon; Sanz Cortiella, Ricardo; Escolà i Agustí, Alexandre; Catalán, Heliodoro (Elsevier, 2014)
    Vector reconstruction of objects from an unstructured point cloud obtained with a LiDAR-based system (light detection and ranging) is one of the most promising methods to build three dimensional models of orchards. The ...
  • Measurement of spray drift with a specifically designed lidar system 

    Gregorio López, Eduard; Torrent Martí, Xavier; Planas de Martí, Santiago; Solanelles Batlle, Francesc; Sanz Cortiella, Ricardo; Rocadenbosch Burillo, Francesc; Masip Vilalta, Joan; Rosell Polo, Joan Ramon; Ribes Dasi, Manuel (MDPI, 2016)
    Field measurements of spray drift are usually carried out by passive collectors and tracers. However, these methods are labour- and time-intensive and only provide point- and time-integrated measurements. Unlike these ...
  • 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 ...
  • 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 ...
  • Potential of a terrestrial LiDAR-based system to characterise weed vegetation in maize crops 

    Andújar, Dionisio; Escolà i Agustí, Alexandre; Rosell Polo, Joan Ramon; Fernández-Quintanilla, César; Dorado, José (Elsevier, 2013)
    LiDAR (Light Detection And Ranging) is a remote-sensing technique for the measurement of the distance between the sensor and a target. A LiDAR-based detection procedure was tested for characterisation of the weed vegetation ...
  • Lidar: towards a new methodology for field measurement of spray drift 

    Gregorio López, Eduard; Torrent Martí, Xavier; Solanelles Batlle, Francesc; Sanz Cortiella, Ricardo; Rocadenbosch Burillo, Francesc; Masip Vilalta, Joan; Ribes Dasi, Manuel; Planas de Martí, Santiago; Rosell Polo, Joan Ramon (Association of Applied Biologists, 2016)
    Lidar technology is becoming a promising alternative for spray drift measurement to the labour and time-expensive methodologies based on the ISO 22866 standard. This paper presents last advancements in an eye-safe lidar ...
  • Design of a decision support method to determine volume rate for vineyard spraying 

    Gil Moya, Emilio; Escolà i Agustí, Alexandre (American Society of Agricultural and Biological Engineers, 2009)
    Dose determination in crops such as grapevine, which develops a large canopy within a relatively short period of time, becomes a key factor on the final success of plant protection product (PPP) application. Efficacy of ...
  • Weed discrimination using ultrasonic sensors 

    Andújar, Dionisio; Escolà i Agustí, Alexandre; Dorado, José; Fernández-Quintanilla, César (John Wiley & Sons, 2011)
    A new approach is described for automatic discrimination between grasses and broad-leaved weeds, based on their heights. An ultrasonic sensor was mounted on the front of a tractor, pointing vertically down in the inter-row ...
  • Variable rate application of plant protection products in vineyard using ultrasonic sensors 

    Gil Moya, Emilio; Escolà i Agustí, Alexandre; Rosell Polo, Joan Ramon; Planas de Martí, Santiago; Val, Luis (Elsevier, 2007)
    The changes in the shape and size of vines during the growing season require a continuous adjustment of the applied dose to optimize spray application efficiency. Target detection with ultrasonic sensors can be used to ...
  • Variable rate sprayer. Part 2 – Vineyard prototype: design, implementation, and validation 

    Gil Moya, Emilio; Llorens Calveras, Jordi; Llop, Jordi; Fàbregas, X.; Escolà i Agustí, Alexandre; Rosell Polo, Joan Ramon (Elsevier, 2013)
    The structural characteristics of the canopy are a key consideration for improving the efficiency of the spray application process for tree crops. However, obtaining accurate data in an easy, practical, and efficient way ...

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