Method for detecting boll opening of cotton based on image detection

A technology of image detection and lint, which is applied in the field of detection of lint, can solve the problems of short camera distance, low image resolution, wide shooting area, etc., and achieve the effect of removing random noise interference

Active Publication Date: 2011-06-22
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

The above methods are all applied to the automatic cotton picking robot, the camera has a short working distance, the image range is small, and the cotton wool area in the image is relatively obvious
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  • Method for detecting boll opening of cotton based on image detection
  • Method for detecting boll opening of cotton based on image detection
  • Method for detecting boll opening of cotton based on image detection

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Embodiment Construction

[0031] The invention provides a method for automatically detecting whether there is cotton wool in the image based on the real-time front-down view cotton field image, using the Lab color feature of cotton wool and the continuity of images on the same day. The specific embodiment and implementation steps of the present invention will be described in detail below in conjunction with the accompanying drawings. The solution of the present invention is divided into a training phase and a detection phase.

[0032] 1. Training phase: Through the historical data of the cotton field images in the boll opening period taken in the previous year, the Lab color feature change law of the cotton wool area in the statistical image is divided into two steps, as shown in the attached figure 1 Shown:

[0033] (1) Sample image generation, in the historical image data, randomly select about 100 cotton field images taken during the boll-opening period, such as image 3 As shown, and then select t...

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Abstract

The invention discloses a method for detecting boll opening of cotton based on image detection. The method specifically comprises two stages, namely a training stage for counting the change rule of a cotton region in a cotton field image in a Lab color space through history image data, and a detection stage for detecting a real-time cotton field video image by using the change rule of cotton counted in the training stage in the Lab color space. The method comprises the following specific steps of: (1) detecting a single cotton image, detecting a candidate cotton region in the image according to a counting result and generating a binary result image; (2) marking and de-noising a communication domain, marking the binary result image and removing small noise interference by setting an area threshold value of the communication domain; (3) making a comprehensive judgment, voting each candidate region by using detection results at different moments of each day, selecting a stably existing region serving as the final cotton region detection result and further removing the interference of random noise; and (4) outputting a result image. By adopting the method, the influence of illumination is effectively overcome by using the Lab color characteristic of cotton and the continuity of images on the same day, and the presence of cotton in a cotton field image is detected correctly.

Description

technical field [0001] The invention belongs to the field of combination of digital image processing and agricultural meteorological observation, and in particular relates to a method for detecting whether cotton fluffs appear from cotton plants by taking cotton field images as objects. Background technique [0002] Cotton is one of the main economic crops in my country, and the planting area is very extensive. Cotton development period, yield and quality are vulnerable to climate change. For a long time, the observation of cotton development period has been mainly through manual observation, which is greatly affected by the subjective factors of observers. At the same time, due to the long observation period and wide area, it is not economical to use manpower to observe. Therefore, it is very necessary to observe the developmental stages of cotton fields by taking video images of cotton fields and using image processing methods. Cotton boll opening is an important part of...

Claims

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Application Information

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IPC IPC(8): G06K9/62
Inventor 曹治国鄢睿丞余正泓朱磊张雪芬白晓东李翠娜
Owner HUAZHONG UNIV OF SCI & TECH
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