DIAGNOSTIC MODEL FOR WHEAT LEAF CONDITIONS USING IMAGE FEATURES AND A SUPPORT VECTOR MACHINE

文献类型: 外文期刊

第一作者: Du, K.

作者: Du, K.;Sun, Z.;Li, Y.;Zheng, F.;Chu, J.;Su, Y.

作者机构:

关键词: Diagnostic model;Image processing;Plant disease;Precision agriculture;Support vector machine

期刊名称:TRANSACTIONS OF THE ASABE ( 影响因子:1.188; 五年影响因子:1.695 )

ISSN: 2151-0032

年卷期: 2016 年 59 卷 5 期

页码:

收录情况: SCI

摘要: This study presents a diagnostic model for wheat leaf conditions (i.e., healthy, powdery mildew, stripe rust, and leaf rust) based on image processing and support vector machine (SVM) technologies. The model follows a process consisting of in-field acquisition, automatic classification, and ongoing detection. This methodology uses various color, texture, and shape features to distinguish between healthy and diseased wheat leaves. First, acquired RGB-colored digital images were preprocessed to segment suspected disease spots. Second, the color, texture, and shape features were extracted from the segmented images. Different combinations of feature vectors were then used as inputs for the SVM, which was coupled with four types of kernel functions. Finally, sample training experiments were performed to identify the optimal SVM classifiers. The results indicate that the SVM classifier with a radial basis kernel function and a selected combination of feature vectors significantly outperformed the other algorithms, achieving a high overall recognition accuracy of 97.73%. This model could be used as an effective tool to identify wheat leaf conditions and has the potential for real-time diagnostic applications under field conditions.

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