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Automatic detection of powdery mildew on grapevine leaves by image analysis: Optimal view-angle range to increase the sensitivity

Oberti, Roberto ; Marchi, Massimo ; Tirelli, Paolo ; Calcante, Aldo ; Iriti, Marcello ; Borghese, Alberto N

Computers and Electronics in Agriculture, June 2014, Vol.104, pp.1-8 [Rivista Peer Reviewed]

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  • Titolo:
    Automatic detection of powdery mildew on grapevine leaves by image analysis: Optimal view-angle range to increase the sensitivity
  • Autore: Oberti, Roberto ; Marchi, Massimo ; Tirelli, Paolo ; Calcante, Aldo ; Iriti, Marcello ; Borghese, Alberto N
  • Descrizione: •We measured powdery mildew (PM) on grapevine leaves from different view angles.•A multispectral image analysis algorithm for disease detection was applied.•Sensitivity of automatic detection of symptoms is increased by large view angles.•Detection of early-middle symptoms is dramatically improved by optimal view angle.•Measuring canopy from angles of 40° to 60° can help field detection of PM initial foci. Powdery mildew is a major fungal disease for grapevine (Vitis vinifera L.) as well as for other important specialty crops, causing severe damage, including yield loss and depreciation of wine or produce quality. This disease is thoroughly controlled by uniform spraying of vineyards with agrochemicals according to a calendar, which can easily result in ten to fifteen fungicide applications in several grapevine-growing areas. Since primary infections are localized in discrete foci rather than being uniformly diffused, there are potential benefits linked to the...
  • Fa parte di: Computers and Electronics in Agriculture, June 2014, Vol.104, pp.1-8
  • Soggetti: Disease Detection ; Grapevine ; Powdery Mildew ; Multispectral Imaging ; Proximal Sensing ; Precision Pest Management ; Disease Detection ; Grapevine ; Powdery Mildew ; Multispectral Imaging ; Proximal Sensing ; Precision Pest Management ; Agriculture
  • Lingua: Inglese
  • Identificativo: ISSN: 0168-1699 ; E-ISSN: 1872-7107 ; DOI: 10.1016/j.compag.2014.03.001

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