Method and device for measuring number of seedlings in shortage in corn seedling stage

A method of measurement, technology of corn seedlings, applied in the field of crop information

Active Publication Date: 2013-11-27
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method and device for measuring the number of missing seedlings in the corn seedling stage, which solves the problem of automatically measuring the number of missing seedlings in the corn row

Method used

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  • Method and device for measuring number of seedlings in shortage in corn seedling stage
  • Method and device for measuring number of seedlings in shortage in corn seedling stage
  • Method and device for measuring number of seedlings in shortage in corn seedling stage

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Embodiment 1

[0055] like figure 1 Shown, the embodiment of the present invention provides a kind of measuring method of the seedling number of corn seedling stage, and this method comprises the following steps:

[0056] S1. Obtain the image of the corn seedling plant, and obtain the image sequence I (I 1 , I 2 ,... I n ), n is a positive integer;

[0057] S2, the image sequence I (I 1 , I 2 ,... I n ) in the repeated areas of two adjacent images are spliced ​​to obtain a rowwise image IW of corn seedling stage;

[0058] S3. Segment and identify the corn seedling-stage image IW, obtain the position of the corn seedling stalk, and calculate the straight line of the corn seedling stalk;

[0059] S4. Identify the position of missing seedlings according to the straight line of the stalks of the corn seedlings, and calculate the number of missing seedlings.

[0060] The present invention obtains the image of the corn seedling stage plant, splices the repeated regions of two adjacent imag...

Embodiment 2

[0099] like figure 2 Shown, the present invention also provides a kind of measuring device of the seedling number of corn seedling stage, it is characterized in that, comprises following module:

[0100] Obtain the corn seedling stage plant image module, obtain the corn seedling stage plant image, and obtain the image sequence I (I 1 , I 2 ,... I n ), n is a positive integer;

[0101] Calculate the row direction image module of corn seedling stage, the image sequence I (I 1 , I 2 ,... I n ) in the repeated areas of two adjacent images are spliced ​​to obtain a rowwise image IW of corn seedling stage;

[0102] The module for calculating the straight line of the corn seedling stalk, segmenting and identifying the corn seedling image IW, obtaining the position of the corn seedling stalk, and calculating the straight line of the corn seedling stalk;

[0103] The module for calculating the number of missing seedlings identifies the position of missing seedlings according to...

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Abstract

The invention provides a method and device for measuring the number of seedlings in shortage in the corn seedling stage, and relates to the technical field of information of crops. The method includes the steps that firstly, images of plants in the corn seedling stage are acquired, and an image sequence I (I1, I2, ...In) is obtained, wherein the n is a positive integer; secondly, repeated areas in every two adjacent images in the image sequence I (I1, I2, ...In) are spliced, and a row-direction image IW in the corn seedling stage is obtained; thirdly, the row-direction image IW in the corn seedling stage is divided and recognized, plant stem positions in the corn seedling stage are obtained, and a row-direction straight line of plant stems in the corn seedling stage is calculated; fourthly, according to the row-direction straight line of the plant stems in the corn seedling stage, the positions where the seedlings are in shortage are recognized and the number of the seedlings in shortage is calculated. The method and device have high automation degree, and can replace a manual method to search for the number of the seedlings in shortage in the core seedling stage, reduce human input investment and remove interference of personal errors. Therefore, the quality of corn seeds is easier to evaluate, and indexes of operation accuracy for measuring a seedling machine tool are easier to obtain.

Description

technical field [0001] The invention relates to the technical field of crop information, in particular to a method and device for measuring the number of missing seedlings at the seedling stage of corn. Background technique [0002] Corn is one of the main crops planted in my country. The number of corn plants has an important impact on the yield of corn. Wiley and Heath (1969) pointed out that the yield can reach the maximum only when the plant density reaches a certain value. Affected by many factors such as the germination rate of corn seeds, the precision of planting machinery, the proficiency of operators, soil moisture, pests and diseases, corn plants in the field often appear missing. Under low density (45000 plants / ha) it can only compensate 47% of its yield, while at high density (75000 plants / ha) it can only compensate 18%. Therefore, the number of missing seedlings in the corn row can be measured quickly, accurately and automatically, which can not only provide i...

Claims

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Application Information

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IPC IPC(8): G06M11/00
Inventor 王传宇郭新宇肖伯祥杜建军吴升
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI
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