Apple Leaf Disease Identification in Complex Background Based on BAM-Net

Author:

Gao Yuxi1,Cao Zhongzhu1,Cai Weiwei2ORCID,Gong Gufeng1,Zhou Guoxiong1,Li Liujun3ORCID

Affiliation:

1. College of Computer & Information Engineering, Central South University of Forestry and Technology, Changsha 410004, China

2. School of Artificial Intelligence and Computer Science, Jiangnan University, Wuxi 214122, China

3. Department of Soil and Water Systems, University of Idaho, Moscow, ID 83844, USA

Abstract

Apples are susceptible to infection by various pathogens during growth, which induces various leaf diseases and thus affects apple quality and yield. The timely and accurate identification of apple leaf diseases is essential to ensure the high-quality development of the apple industry. In practical applications in orchards, the complex background in which apple leaves are located poses certain difficulties for the identification of leaf diseases. Therefore, this paper suggests a novel approach to identifying and classifying apple leaf diseases in complex backgrounds. First, we used a bilateral filter-based MSRCR algorithm (BF-MSRCR) to pre-process the images, aiming to highlight the color and texture features of leaves and to reduce the difficulty of extracting leaf disease features with subsequent networks. Then, BAM-Net, with ConvNext-T as the backbone network, was designed to achieve an accurate classification of apple leaf diseases. In this network, we used the aggregate coordinate attention mechanism (ACAM) to strengthen the network’s attention to disease feature regions and to suppress the interference of redundant background information. Then, the multi-scale feature refinement module (MFRM) was used to further identify deeper disease features and to improve the network’s ability to discriminate between similar disease features. In our self-made complex background apple leaf disease dataset, the proposed method achieved 95.64% accuracy, 95.62% precision, 95.89% recall, and a 95.25% F1-score. Compared with existing methods, BAM-Net has higher disease recognition accuracy and classification results. It is worth mentioning that BAM-Net still performs well when applied to the task of the leaf disease identification of other crops in the PlantVillage public dataset. This indicates that BAM-Net has good generalization ability. Therefore, the method proposed in this paper can be helpful for apple disease control in modern agriculture, and it also provides a new reference for the disease identification of other crops.

Funder

Changsha Municipal Natural Science Foundation

National Natural Science Foundation in China

Department of Education Hunan Province

Hunan Key Laboratory of Intelligent Logistics Technology

Publisher

MDPI AG

Subject

Agronomy and Crop Science

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