Estimation method for trialeurodes vaporariorum population density

A whitefly and density technology, applied in computing, computer parts, image data processing, etc., can solve the problem of difficult to achieve accurate, real-time, and rapid estimation of whitefly population density, and achieve the effect of promoting automation and overcoming low efficiency.

Active Publication Date: 2013-08-07
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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Problems solved by technology

[0005] The present invention provides a method for estimating whitefly population density to solve the problem that

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  • Estimation method for trialeurodes vaporariorum population density
  • Estimation method for trialeurodes vaporariorum population density
  • Estimation method for trialeurodes vaporariorum population density

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[0046] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0047] figure 1 It is a flow chart of the method for estimating whitefly population density of the present invention, and the method for estimating whitefly population density mainly includes the following steps:

[0048] (1) Obtain a color image of whitefly from the image acquisition device, and select an estimated area of ​​whitefly density from the color image;

[0049] (2) Convert the color estimated area image into a grayscale image;

[0050] (3) Use the thresholding method (I) to threshold the grayscale image, remove part of the background image, and obtain the whitefly area;

[0051] (4) Perform a closed operation on the image to fill in the narrow gaps in the im...

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Abstract

The invention discloses an estimation method for trialeurodes vaporariorum population density. The estimation method for the trialeurodes vaporariorum population density comprises the following steps of: obtaining the colorful image of trialeurodes vaporariorum from image collection equipment; selecting the estimation area of the trialeurodes vaporariorum density from the colorful image; converting the colorful image of the color estimation area into a gray scale image; carrying out thresholding on the gray scale image with a first thresholding method; carrying out closed operation on the thresholding image; thresholding the image subjected to the closed operation with a second thresholding method; fitting a binary image midpoint with an ellipse fitting method; calculating the number of ellipse in the image; and according to the number of the trialeurodes vaporariorum and the area of the estimation area, solving the estimation value of the trialeurodes vaporariorum population density. According to the estimation method for the trialeurodes vaporariorum population density, which is disclosed by the invention, the trialeurodes vaporariorum population density in the image can be automatically and accurately estimated, decision information is provided for correctly estimating the damage degree of the trialeurodes vaporariorum and adopting a proper control measure, and the trialeurodes vaporariorum prevention and control automation is indirectly propelled.

Description

technical field [0001] The invention relates to the technical field of detection based on machine vision, in particular to a method for estimating population density of whitefly. Background technique [0002] Whitefly, also known as whitefly, is one of the main pests of crops grown in greenhouses and greenhouses. The insects cluster on the back of crop leaves to suck the juice, causing the damaged leaves to turn green, turn yellow, shrink, or even die. At the same time, it can also cause the occurrence of coal stain, which seriously affects the yield and quality of planted crops. Commonly used control measures mainly include: biological control, physical control and chemical control. Among them, the accurate estimation of whitefly population density and damage degree is the main basis for taking correct control measures. Take chemical control as an example: if the whitefly population density is estimated too low, too little pesticide will be sprayed, and the purpose of con...

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Application Information

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IPC IPC(8): G06K9/00G06K9/62G06T7/00
Inventor 王开义王志彬张水发刘忠强杨锋潘守慧王书锋
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI
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