Digital Image Sensor-Based Assessment of the Status of Oat (Avena sativa L.) Crops after Frost Damage
作者: Antonia Macedo-CruzGonzalo PajaresMatilde SantosIsidro Villegas-Romero
刊名: Sensors, 2011, Vol.11 (6), pp.6015
来源数据库: Directory of Open Access Journals
关键词: digital image sensoragricultural imagesunsupervised classificationautomatic thresholdingCIELab colour spacefuzzy error matrixoat frost damage
原始语种摘要: The aim of this paper is to classify the land covered with oat crops, and the quantification of frost damage on oats, while plants are still in the flowering stage. The images are taken by a digital colour camera CCD-based sensor. Unsupervised classification methods are applied because the plants present different spectral signatures, depending on two main factors: illumination and the affected state. The colour space used in this application is CIELab, based on the decomposition of the colour in three channels, because it is the closest to human colour perception. The histogram of each channel is successively split into regions by thresholding. The best threshold to be applied is automatically obtained as a combination of three thresholding strategies: (a) Otsu’s method, (b) Isodata...
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影响因子:1.953 (2012)

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关键词翻译
关键词翻译
  • thresholding 阈值
  • colour 颜料
  • automatic 自动的
  • illumination 光照强度
  • histogram 倾率分布图
  • camera 摄影机
  • classify 分类
  • digital 数字的
  • perception 知觉
  • spectral 谱的