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A sunflower disc size measuring method

A measurement method, sunflower technology, applied in image data processing, instruments, calculations, etc., can solve problems such as time-consuming, labor-intensive, and poor repeatability

Active Publication Date: 2019-02-19
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the technical problems of time-consuming, labor-intensive, and poor repeatability of manually measuring the size of sunflower discs and disks, thereby providing a method for measuring the size of sunflower discs

Method used

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  • A sunflower disc size measuring method

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Embodiment Construction

[0264] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0265] A method for measuring the size of a sunflower disc, such as image 3 As shown, the steps are as follows:

[0266] S1, obtain the original RGB image a1 of the sunflower disk, such as Figure 4 shown.

[0267] The image acquisition device designed by the present invention, such as Figure 1-2 As shown, it includes a background board 1, a shielding board 4, a tripod and a camera; the background board 1 is a white foam board, and a slit 2 is arranged on...

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Abstract

The invention discloses a sunflower disc size measuring method, and provides a device and a method for quickly, accurately and non-destructively acquiring the sizes of the sunflower disc, the disc andthe like by adopting image processing. The image of sunflower disk is collected in the field by special background board and shield board without destruction, The image projection transformation is automatically carried out, the tip point of the tongue-shaped floret of the disc is searched, the tip contour of the disc is determined by the tip wrapping method provided by the invention, the diameters of a plurality of different radial directions of the disc of the sunflower are measured, and the average value is calculated as the diameter of the disc of the sunflower. By texture segmentation, morphological operations such as open and close operations, the disk is extracted, and the diameter of the disk is calculated. Finally, the prediction model of the average diameter of the disc and discwas established. The invention has high accuracy and is insensitive to scale change. The method can achieve fast and nondestructive measurement and minimal manual work. The degree of automation is high, and manual intervention can be prevented.

Description

technical field [0001] The invention belongs to the fields of plant phenotype, flower morphology and image processing, and in particular relates to a method for measuring the size of a sunflower disc. Background technique [0002] Sunflower (Helianthus annuus L.) is an annual herb of the genus Helianthus in the Compositae family, and is known as one of the world's four major oil crops with important economic value (Ma Changsheng, Wang Biao, Li Yong, etc. Sunflower and Observation of flowering biology of oil sunflower [J]. China Apiculture, 2017, 68(10):15-17). Sunflowers are flower heads that grow on the top of the stem, commonly known as flower discs. Its shape has three types: convex, flat and concave. There are two kinds of flowers on the flower disc, ray flowers and tubular flowers. Tongue-shaped flowers 1 to 3 layers, born around the edge of the disc, are asexual flowers. Its color and size vary depending on the variety, and it is orange or light yellow, which has t...

Claims

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Application Information

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IPC IPC(8): G06T7/62G06T7/66G06T7/136G06T7/11G06T7/187G06T7/13
CPCG06T7/11G06T7/13G06T7/136G06T7/187G06T7/62G06T7/66G06T2207/20132
Inventor 张卫正张焕龙李萌李小娟张伟伟李志刚徐晋刘岩陈启强金保华殷长魁邹东尧张志伟
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY