caa a22 4500 445864451 CHVBK 20180317145453.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s11119-010-9187-0 doi (NATIONALLICENCE)springer-10.1007/s11119-010-9187-0 Yield prediction in apple orchards based on image processing [Elektronische Daten] [A. Aggelopoulou, D. Bochtis, S. Fountas, K. Swain, T. Gemtos, G. Nanos] It has been suggested that apple ( Malus*domestica Borkh) flowering distribution maps can be used for site-specific management decisions. The objectives of this study were (i) to study the flower density variability in an apple orchard using image analysis and (ii) to model the correlation between flower density as determined from image analysis and fruit yield. The research was carried out in a commercial apple orchard in Central Greece. In April 2007, when the trees were at full bloom, photos of the trees were taken following a systematic uniform random sampling procedure. In September 2007, yield mapping was carried out measuring yield per ten trees and recording the position of the centre of the ten trees. Using this data (the measured yield of the trees and the pictures samples, representing the flower distribution), an image processing-based algorithm was developed that predicts tree yield by analyzing the picture of the tree at full bloom. For the evaluation of the algorithm, a case study scenario is presented where the error of the predicted yield was set at 18%. These results indicated that potential yield could be predicted early in the season from flowering distribution maps and could be used for orchard management during the growing season. Springer Science+Business Media, LLC, 2010 Flower map nationallicence Yield map nationallicence Site-specific management nationallicence Image processing nationallicence Aggelopoulou A. Faculty of Crop Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Str., N. Ionia, 38446, Magnesia, Greece aut Bochtis D. Faculty of Agricultural Sciences, Department of Agricultural Engineering, University of Aarhus, Blichers Allé 20, 8830, Tjele, Denmark aut Fountas S. Faculty of Crop Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Str., N. Ionia, 38446, Magnesia, Greece aut Swain K. Faculty of Agricultural Sciences, Department of Agricultural Engineering, University of Aarhus, Blichers Allé 20, 8830, Tjele, Denmark aut Gemtos T. Faculty of Crop Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Str., N. Ionia, 38446, Magnesia, Greece aut Nanos G. Faculty of Crop Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Str., N. Ionia, 38446, Magnesia, Greece aut Precision Agriculture Springer US; http://www.springer-ny.com 12/3(2011-06-01), 448-456 1385-2256 12:3<448 2011 12 11119 https://doi.org/10.1007/s11119-010-9187-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11119-010-9187-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aggelopoulou A. Faculty of Crop Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Str., N. Ionia, 38446, Magnesia, Greece aut NATIONALLICENCE 700 1- Bochtis D. Faculty of Agricultural Sciences, Department of Agricultural Engineering, University of Aarhus, Blichers Allé 20, 8830, Tjele, Denmark aut NATIONALLICENCE 700 1- Fountas S. Faculty of Crop Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Str., N. Ionia, 38446, Magnesia, Greece aut NATIONALLICENCE 700 1- Swain K. Faculty of Agricultural Sciences, Department of Agricultural Engineering, University of Aarhus, Blichers Allé 20, 8830, Tjele, Denmark aut NATIONALLICENCE 700 1- Gemtos T. Faculty of Crop Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Str., N. Ionia, 38446, Magnesia, Greece aut NATIONALLICENCE 700 1- Nanos G. Faculty of Crop Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Str., N. Ionia, 38446, Magnesia, Greece aut NATIONALLICENCE 773 0- Precision Agriculture Springer US; http://www.springer-ny.com 12/3(2011-06-01), 448-456 1385-2256 12:3<448 2011 12 11119 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer