Alfonso García-Ferrer
University of Córdoba (Spain)
41 Papers
175 Citations
Alfonso García-Ferrer is an academic researcher from University of Córdoba (Spain). The author has contributed to research in topics: Computer science & Multispectral image. The author has an hindex of 17, co-authored 41 publications.
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Papers
Assessment of UAV-photogrammetric mapping accuracy based on variation of ground control points
Patricio Martínez-Carricondo,Francisco Agüera-Vega,Fernando Carvajal-Ramírez,Francisco Javier Mesas-Carrascosa,Alfonso García-Ferrer,Fernando-Juan Pérez-Porras +5 more
TL;DR: It is necessary to place GCPs around the edge of the study area to minimize planimetry errors and to create a stratified distribution inside theStudy area with a density of around 0.5–1 GCP × ha−1 to minimize altimetryerrors.
273
Object- and pixel-based analysis for mapping crops and their agro-environmental associated measures using QuickBird imagery
Isabel Luisa Castillejo-González,Francisca López-Granados,Alfonso García-Ferrer,J. M. Peña-Barragán,Montserrat Jurado-Expósito,Manuel Sánchez de la Orden,María González-Audícana +6 more
TL;DR: A study of the accuracy of five supervised classification methods using multispectral and pan-sharpened QuickBird imagery to verify whether remote sensing offers the ability to efficiently identify crops and agro-environmental measures in a typical agricultural Mediterranean area characterized by dry conditions.
270
Spatial variability of agricultural soil parameters in southern Spain
Francisca López-Granados,Montserrat Jurado-Expósito,S. Atenciano,Alfonso García-Ferrer,Manuel Sánchez de la Orden,Luis García-Torres +5 more
TL;DR: In this article, spatial patterns for seven soil chemical properties and textures were examined in two fields in southern Spain (Monclova and Caracol, province of Seville, Andalusia) in order to identify their spatial distribution for the implementation of a site-specific fertilization practice.
Assessing Optimal Flight Parameters for Generating Accurate Multispectral Orthomosaicks by UAV to Support Site-Specific Crop Management
Francisco Javier Mesas-Carrascosa,Jorge Torres-Sánchez,Inmaculada Clavero-Rumbao,Alfonso García-Ferrer,J. M. Peña,Irene Borra-Serrano,Francisca López-Granados +6 more
TL;DR: Results show that a balance between spatial resolution and spectral discrimination is needed to optimize the mission planning and image processing to achieve every agronomic objective and users do not have to sacrifice flying at low altitudes to cover the whole area of interest completely.
Multi-species weed spatial variability and site-specific management maps in cultivated sunflower
Montserrat Jurado-Expósito,Francisca López-Granados,Luis García-Torres,Alfonso García-Ferrer,Manuel Sánchez de la Orden,S. Atenciano +5 more
TL;DR: In this paper, the authors used geographic techniques to describe and map weed spatial distribution in two sunflower fields in Cabello and Monclova, southern Spain, and used data from the study were used to design intermittent spraying strategies.