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Wheat seeding counting method

A counting method and technology of wheat seedlings, applied in calculation, image data processing, instruments, etc., can solve problems such as sticking, large difference in shape of wheat seedlings, different postures, etc., and achieve the effect of low investment cost

Active Publication Date: 2016-03-30
YANGZHOU UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for counting wheat seedlings, which solves the problem that the wheat seedlings are difficult to identify through image processing technology due to large differences in shape, different postures and adhesion

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0021] As shown in the figure, a method for counting wheat seedlings of the present invention comprises the following steps:

[0022] A. Image acquisition of wheat seedlings: At the first leaf stage of wheat seedlings, use ordinary digital cameras or image acquisition equipment to obtain images of wheat seedlings vertically.

[0023] B. Skeleton extraction of wheat seedlings: such as figure 1 As shown, the super green value of wheat seedlings is obviously higher than other parts of the image, which can be used to extract wheat seedlings in field environment. use the formula The grayscale image of the super green value of the wheat seedling image is calculated, and the gray image is binarized, and then the filtere...

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Abstract

The invention discloses a wheat seeding counting method. The method comprises the following steps of wheat seeding image acquisition: vertically acquiring a wheat seeding image in a wheat seeding leaf stage; wheat seeding skeleton extraction: using a color characteristic to extract the wheat seedings in the wheat seeding image and extracting a skeleton of a wheat seeding area binary image; wheat seeding skeleton analysis: using an Harris angle point detection algorithm to detect an angle point of the skeleton, using a Freeman chain code to simplify the wheat seeding image skeleton into one line segment, and using the angle point detection algorithm and a closed area detection algorithm to detect an angle point number NCP of the skeleton and a closed ring number NCR of a closed polygon respectively; wheat seeding calculating: using a formula to calculate a wheat seeding number NS, wherein the formula is NS=NCP-NCR+1. By using the method, labor saving and time saving are achieved; and problems that shape difference of the wheat seedings is large, wheat seedings have different postures, and the wheat seedings are overlapped, bonded and difficult to count are solved.

Description

technical field [0001] The invention relates to a counting method, in particular to a counting method for wheat seedlings. Background technique [0002] The yield and quality of wheat are affected not only by genetic factors, but also by environmental factors and cultivation measures. Among the cultivation measures, planting density and nitrogen nutrition had the most prominent effects on wheat. According to Spink's research, the sowing density of wheat significantly affects its later yield, and the research of Liu Ping et al. believes that the sowing density of wheat also affects the quality of wheat kernels. It can be seen from previous studies that the number of basic seedlings plays a vital role in the growth of wheat, and it is the main basis for deciding how to design later cultivation measures for wheat. Therefore, timely and accurate acquisition of the number of wheat seedlings in the field is of positive significance for guiding production. At present, the number...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T2207/30242
Inventor 孙成明刘涛武威朱新开郭文善
Owner YANGZHOU UNIV
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