Fusarium head blight detection, spikelet estimation, and severity assessment in wheat using 3D convolutional neural networks

• URL: http://arxiv.org/abs/2303.05634v1
• Date: Fri, 10 Mar 2023 00:46:32 GMT
• Title: Fusarium head blight detection, spikelet estimation, and severity assessment in wheat using 3D convolutional neural networks
• Authors: Oumaima Hamila, Christopher J. Henry, Oscar I. Molina, Christopher P. Bidinosti, and Maria Antonia Henriquez
• Abstract summary: Fusarium head blight (FHB) is one of the most significant diseases affecting wheat and other small grain cereals worldwide. The applications considered in this work are the automated detection of FHB disease symptoms expressed on a wheat plant, the automated estimation of the total number of spikelets and the total number of infected spikelets on a wheat head, and the automated assessment of the FHB severity in infected wheat.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Fusarium head blight (FHB) is one of the most significant diseases affecting wheat and other small grain cereals worldwide. The development of resistant varieties requires the laborious task of field and greenhouse phenotyping. The applications considered in this work are the automated detection of FHB disease symptoms expressed on a wheat plant, the automated estimation of the total number of spikelets and the total number of infected spikelets on a wheat head, and the automated assessment of the FHB severity in infected wheat. The data used to generate the results are 3-dimensional (3D) multispectral point clouds (PC), which are 3D collections of points - each associated with a red, green, blue (RGB), and near-infrared (NIR) measurement. Over 300 wheat plant images were collected using a multispectral 3D scanner, and the labelled UW-MRDC 3D wheat dataset was created. The data was used to develop novel and efficient 3D convolutional neural network (CNN) models for FHB detection, which achieved 100% accuracy. The influence of the multispectral information on performance was evaluated, and our results showed the dominance of the RGB channels over both the NIR and the NIR plus RGB channels combined. Furthermore, novel and efficient 3D CNNs were created to estimate the total number of spikelets and the total number of infected spikelets on a wheat head, and our best models achieved mean absolute errors (MAE) of 1.13 and 1.56, respectively. Moreover, 3D CNN models for FHB severity estimation were created, and our best model achieved 8.6 MAE. A linear regression analysis between the visual FHB severity assessment and the FHB severity predicted by our 3D CNN was performed, and the results showed a significant correlation between the two variables with a 0.0001 P-value and 0.94 R-squared.

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