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High-precision wheat ear length measuring method based on monocular camera

A length measurement, high-precision technology, applied in the direction of image data processing, instruments, calculations, etc., can solve the problems of troublesome use, inconvenient measurement operation, and the ear is placed in a fixed position manually marked

Pending Publication Date: 2019-10-18
XIJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the machine vision system moves or the relative position of the camera and the stage changes slightly, the system needs to be calibrated again, so it is troublesome to use in practice
In addition, in the existing ear length measurement method based on machine vision, when measuring the ear length, the ear should be placed in a fixed position marked manually, and the ear cannot be placed randomly, which makes the measurement operation inconvenient

Method used

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  • High-precision wheat ear length measuring method based on monocular camera
  • High-precision wheat ear length measuring method based on monocular camera
  • High-precision wheat ear length measuring method based on monocular camera

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Experimental program
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Effect test

Embodiment

[0072] In order to verify the validity of the wheat ear length measurement method based on the monocular camera proposed by the present invention, the ears of wheat placed obliquely and a plurality of ears of wheat are measured respectively, and the image processing results are shown in Fig. 3 (a) - Fig. 3 respectively (d), Figure 4(a)-Figure 4(d) As shown, the average length of ear length measurement was 7.43 cm. Compared with manual measurement, manual measurement precision is 0.1cm, and the inventive method measurement precision is 0.01cm, and simultaneously the inventive method measurement efficiency is 4 times of manual measurement efficiency. Therefore, compared with manual measurement, the measurement accuracy and measurement efficiency of the method of the present invention have been greatly improved than manual measurement. The comparison between manual measurement and the measurement effect of the method of the present invention is shown in Table 1.

[0073] Table...

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Abstract

The invention provides a wheat ear length measuring method based on machine vision. The wheat ear length measuring method designs a 150mm * 150mm objective table, wherein a white backlight source is arranged below the objective table, and an industrial camera is arranged above the objective table; and during measurement, the backlight source is turned on, wheat ears are placed on the objective table in any direction, and the industrial camera shoots wheat ear pictures, and the length of the wheat ears is calculated through image processing. For the wheat ear length measuring method, camera calibration is not needed, and wheat ears can be placed at will, and the length of the wheat ears is very convenient to measure.

Description

technical field [0001] The invention belongs to the fields of computer information processing and pattern recognition, in particular to a method for measuring the length of seeds by using images. Background technique [0002] Wheat is the main food crop in my country, and increasing wheat yield is an important goal of wheat breeding. The ear length of wheat is an important factor affecting the yield of wheat. In wheat production, the yield is achieved by the production capacity of a single wheat plant, and the growth status and yield information of a single wheat plant can be directly obtained through its Ear shape is shown, and ear length is a very important parameter in wheat ear shape, and it is also one of the important parameters that breeding experts are most concerned about in the links of wheat breeding, seed testing, and yield measurement. [0003] At present, the main methods of measuring wheat ear length are manual ruler measurement and machine vision measurement...

Claims

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Application Information

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IPC IPC(8): G06T7/60G06T7/11G06T7/194G06T7/66G06T7/68
CPCG06T7/60G06T7/11G06T7/194G06T7/66G06T7/68G06T2207/10004G06T2207/30172
Inventor 刘哲李瑞洋崔倩
Owner XIJING UNIV
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