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Grading Method of Leaf Spot Disease Based on Image Processing

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4 Author(s)
Shen Weizheng ; Dept. of Comput., Northeast Agric. Univ., Harbin ; Wu Yachun ; Chen Zhanliang ; Wei Hongda

Since current grading of plant diseases is mainly based on eyeballing, a new method is developed based on computer image processing. All influencing factors existed in the process of image segmentation was analyzed and leaf region was segmented by using Otsu method. In the HSI color system, H component was chosen to segment disease spot to reduce the disturbance of illumination changes and the vein. Then, disease spot regions were segmented by using Sobel operator to examine disease spot edges. Finally, plant diseases are graded by calculating the quotient of disease spot and leaf areas. Researches indicate that this method to grade plant leaf spot diseases is fast and accurate.

Published in:

Computer Science and Software Engineering, 2008 International Conference on  (Volume:6 )

Date of Conference:

12-14 Dec. 2008