Journal
FRONTIERS IN PLANT SCIENCE
Volume 11, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2020.559172
Keywords
strawberry diseases; cascade detector; deep neural network; detection; plant domain knowledge
Categories
Funding
- Korea institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) through Smart Plant Farming Industry Technology Development Program - ministry of Agriculture, Food and Rural Affairs(MAFRA) [320089-01]
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The paper introduces an improved vision-based method for detecting strawberry diseases using a deep neural network. By incorporating the pre-trained PlantNet feature extractor into a two-stage cascade disease detection model, the approach shows promising results in improving accuracy.
Detecting plant diseases in the earliest stages, when remedial intervention is most effective, is critical if damage crop quality and farm productivity is to be contained. In this paper, we propose an improved vision-based method of detecting strawberry diseases using a deep neural network (DNN) capable of being incorporated into an automated robot system. In the proposed approach, a backbone feature extractor named PlantNet, pre-trained on the PlantCLEF plant dataset from the LifeCLEF 2017 challenge, is installed in a two-stage cascade disease detection model. PlantNet captures plant domain knowledge so well that it outperforms a pre-trained backbone using an ImageNet-type public dataset by at least 3.2% in mean Average Precision (mAP). The cascade detector also improves accuracy by up to 5.25% mAP. The results indicate that PlantNet is one way to overcome the lack-of-annotated-data problem by applying plant domain knowledge, and that the human-like cascade detection strategy effectively improves the accuracy of automated disease detection methods when applied to strawberry plants.
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