Method and device for calculating the ratio of lesion area of maize leaf spot disease
A technology of large spot disease and area ratio of corn, applied in the field of image processing, can solve the problems of high labor cost, dependence, and low efficiency
Inactive Publication Date: 2017-09-22
CHINA AGRI UNIV
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[0003] However, the traditional method of calculating the area ratio of maize leaf blotch lesions generally chooses a manual method, that is, the area of corn leaves and the area of lesions are manually measured, and then the ratio of the area of lesions to the area of the whole plant leaf is calculated. The method relies heavily on the subjective judgment of the staff, and there are large errors in the obtained data, and the efficiency is low and the labor cost is high
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[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0019] Such as figure 1 As shown, the present embodiment discloses a method for calculating the ratio of maize leaf leaf spot lesion area, including:
[0020] S1, with the whiteboard as the background, collect the two-dimensional color image of the leaves of the corn plant;
[0021] S2. Based on the image processing technology, extract the corn leaf image and the maiz...
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The present invention discloses a method for calculating a corn leaf exserohilum turcicum disease spot area ratio and a device, the corn leaf exserohilum turcicum disease spot area ratio can be rapidly and accurately calculated with low cost. The method comprises the steps of (S1) with a white board as a background, collecting the 2D color image of a corn plant leaf, (S2) based on image processing technology, extracting a corn leaf image and a corn leaf exserohilum turcicum disease spot image respectively according to the 2D color image, calculating corn leaf pixel point quantity according to the corn leaf image, and calculating the corn leaf exserohilum turcicum disease spot pixel point quantity according to the corn leaf exserohilum turcicum disease spot image, and (S3) calculating the ratio of a corn leaf exserohilum turcicum disease spot area to a corn plant leaf area according to the corn leaf pixel point quantity and the corn leaf exserohilum turcicum disease spot pixel point quantity.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to a method and a device for calculating the area ratio of maize leaf blight spot. Background technique [0002] Leaf spot of maize is a worldwide maize disease, which causes serious economic losses to the corn planting industry. The epidemic of leaf spot of maize is described by analyzing the characteristics of the leaf spot of maize. The area of leaf spot of maize is Ratio calculation is the premise of characteristic analysis on Leopard leaf spot. [0003] However, the traditional method of calculating the area ratio of maize leaf blotch lesions generally chooses a manual method, that is, the area of corn leaves and the area of lesions are manually measured, and then the ratio of the area of lesions to the area of the whole plant leaf is calculated. The method relies heavily on the subjective judgment of the staff, and there are large errors in the obtained dat...
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IPC IPC(8): G01B11/28G06T1/00
Inventor 马钦苏琛刘峻明朱德海范梦扬王越
Owner CHINA AGRI UNIV