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Research on Crop Disease Recognition Database System Based on Image Content Retrieval

  

  1. Computer Science Deptartment, Dehong Teachers College, Dehong 678400, China
  • Received:2014-12-24 Online:2015-04-27 Published:2015-04-29

Abstract:

In view of the shortcomings for crop disease diagnosis expert system, the poper puts forward the way that disease diagnosis diseases based on image retrieval.
Try to establish image characteristics library database, knowledge base , image library and so on according to the plant disease images. Diagnosis, extract the characteristics
of the plant disease image, the characteristics and features of library matching query, through the query results for a description of the disease and prevention measures. In
order to improve the retrieval precision and recall rate, the poper mainly explores the characteristics of library information in the disease image database creation access and
retrieval algorithm design. Disease spot in tobacco plant disease image, for example, the color disease spot edge detection of based multifeature selection and on support vector
machine , 25 disease spot feature extracting, using double coding genetic algorithm and support vector machine (SVM) for feature dimension reduction, in order to get effective
characterization of disease features 17 and the corresponding weights, the characteristics of the normalized processing after establishing a database, and retrieval algorithm is
designed. Experiments show that the constructed image retrieval system has high precision and recall, the fusion of multiple features of disease spot retrieval precision is
higher than single feature. Diagnosis of disease in this way that includes higher disease recognition rate and diagnosis of visualization, the way is used for crop disease
diagnosis expert system that can improve the robustness of the system and achieve the remote online diagnosis of the disease.

Key words:  content-based disease image searching, disease spot segmentation, feature extraction, image database, image similarity