Estimation of Water Stress in Potato Plants Using Hyperspectral Imagery and Machine Learning Algorithms
Autor: | Oscar Dubán Ocampo-Paez, Laura Marcela Torres-Delgado, Julio Martin Duarte-Carvajalino, Angela María Castaño-Marín, Elías Alexander Silva-Arero, Gerardo Antonio Góez-Vinasco |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Canopy
hyperspectral image 010504 meteorology & atmospheric sciences Computer science 0211 other engineering and technologies 02 engineering and technology Plant Science Horticulture Machine learning computer.software_genre 01 natural sciences Convolutional neural network SB1-1110 water stress AdaBoost 021101 geological & geomatics engineering 0105 earth and related environmental sciences Pixel business.industry band importance Hyperspectral imaging Plant culture Random forest Support vector machine machine learning Multilayer perceptron potato Artificial intelligence business computer Algorithm |
Zdroj: | Horticulturae, Vol 7, Iss 176, p 176 (2021) Horticulturae Volume 7 Issue 7 |
ISSN: | 2311-7524 |
Popis: | This work presents quantitative detection of water stress and estimation of the water stress level: none, light, moderate, and severe on potato crops. We use hyperspectral imagery and state of the art machine learning algorithms: random decision forest, multilayer perceptron, convolutional neural networks, support vector machines, extreme gradient boost, and AdaBoost. The detection and estimation of water stress in potato crops is carried out on two different phenological stages of the plants: tubers differentiation and maximum tuberization. The machine learning algorithms are trained with a small subset of each hyperspectral image corresponding to the plant canopy. The results are improved using majority voting to classify all the canopy pixels in the hyperspectral images. The results indicate that both detection of water stress and estimation of the level of water stress can be obtained with good accuracy, improved further by majority voting. The importance of each band of the hyperspectral images in the classification of the images is assessed by random forest and extreme gradient boost, which are the machine learning algorithms that perform best overall on both phenological stages and detection and estimation of water stress in potato crops. |
Databáze: | OpenAIRE |
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