Device for calculating area proportion of disease spot of corn southern leaf blight

Abstract

The invention provides a device for calculating area proportion of a disease spot of corn southern leaf blight. The device comprises an image acquisition unit, an image preprocessing unit, an image feature extraction unit and an area proportion calculating unit. The image acquisition unit is used for collecting corn leaf images; the image preprocessing unit is used for carrying out de-noising processing, image grayscale processing and image threshold segmentation processing on the corn leaf images in sequence to obtain disease spot leaf images; the image feature extraction unit is used for extracting local texture information and edge feature information on the disease spot leaf images; and the area proportion calculating unit is used for calculating the area proportion of the disease spot of corn southern leaf blight in the leaf of a corn plant. The device for calculating the area proportion of the disease spot of corn southern leaf blight can calculate the area proportion of the disease spot of the corn southern leaf blight in a quick, accurate and low-cost manner.

Description

technical field [0001] The invention relates to the technical field of agricultural engineering, in particular to a device for calculating the proportion of the area occupied by small spot disease spots on corn leaves. Background technique [0002] Maize leaf spot disease is a worldwide maize disease, which causes serious economic losses to the corn planting industry. The epidemic situation of maize leaf spot disease is described by analyzing the characteristics of maize leaf spot disease, and the maize leaf spot disease spot Calculation of area ratio is the prerequisite for characteristic analysis of small spot disease. [0003] However, the traditional method of calculating the area ratio of maize small spot 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 ...

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Problems solved by technology

[0003] However, the traditional method of calculating the area ratio of maize small spot 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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