A Leaf Area Measurement Method Based on Image Processing
A technology of blade area and measurement method, applied in measurement devices, instruments, etc., can solve the problems of high equipment requirements and picture quality requirements, complicated operations, complicated manufacturing, etc., to save labor costs and equipment costs, improve measurement convenience, The effect of convenient human-computer interaction
Active Publication Date: 2019-12-31
ZHEJIANG TUOPUYUN AGRI SCI & TECH CO LTD
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It overcomes the problems of low efficiency, complicated operation, large error, complicated manufacturing, and difficult maintenance of traditional methods, and also overcomes the shortcomings of image processing technology when it is applied to leaf area measurement, such as poor effect, difficult operation, and high requirements for equipment and image quality.
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[0038] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings. see figure 1 , the present invention mainly divides into five modules to the processing of blade image, and the first module is image acquisition module, and main content is image acquisition mode; Circle detection, perspective transformation and other methods; the third module is the leaf segmentation module, which mainly performs spatial mapping on the brightness and color features of the image in the RGB space of the color map, and finally saves it in the grayscale image, and finally uses the image segmentation technology to separate the gray The leaf map in the high-degree image is segmented, etc.; the fourth module is an optional correction module, which is an optional function, and is mainly used for users to view and correct the leaves after recognition; the fifth module is a parameter calculation module, mainly Find the out...
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The invention discloses an image processing based leaf size measuring method, which relates to the computer image processing technology field. The method is designed mainly to make the machine's visual sense technology better applied to the measurement of a leaf size. And the method overcomes the defects of a traditional method that might damage a leaf and cannot achieve high efficiency. The method also overcomes the shortcomings of an image processing method in which the photographing device is tedious, the image is prone to be deformed and the device cannot be universally applied. The method comprises the following steps: 1) obtaining images from a specific background plate; 2) using perspective transformation to conduct geometric correction to the distorted images; 3) using color characteristics and brightness characteristics to segment the leaf; 4) performing selective corrections to the segmented results; and 5) extracting the parameters of the leaf and displaying them. At present, the method is already applied to an android tablet computer to achieve the convenience of photographing and human machine interaction. Fast and accurate, the method can provide powerful technical support to measure the size of a leaf.
Description
technical field [0001] The invention relates to the technical field of computer image processing, in particular to a method for measuring blade area based on image processing. Background technique [0002] Plant leaves are important organs for photosynthesis in plants, and proper leaf area index provides a theoretical basis for reasonable dense planting and increased yield. Therefore, in the practice of modern agricultural production, it is of great significance to quickly, conveniently, accurately and non-destructively measure the leaf area to formulate high-yield and high-efficiency cultivation strategies for crops. Traditional leaf area measurement methods mainly include grid method, weighing method, regression method, pixel scanning method, photoelectric leaf area instrument method, etc. The grid method is to spread the leaves on a flat plate with grids of a fixed size, and calculate the number of grids covered by the leaves. The accuracy and workload are affected by th...
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IPC IPC(8): G01B21/28
Inventor 朱旭华陈渝阳赵飞
Owner ZHEJIANG TUOPUYUN AGRI SCI & TECH CO LTD