A method and a system for measuring plant leaf area based on color calibration

A measurement method and plant leaf technology, applied in the field of plant leaf area measurement method and system based on color calibration, can solve the problems of being easily interfered by environmental factors such as light, high noise interference, and high cost, and achieve the elimination of environmental light factors Effects of interference, high measurement accuracy, and simple method

CN109191520AActive Publication Date: 2019-01-11HUBEI ENG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-01-11

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Abstract

The invention relates to a method and a system for measuring plant leaf area based on color calibration. The method comprises the following steps: adopting a camera to collect an initial image of a leaf to be measured on a white calibration board, and extracting a measurement area image according to the initial image; performing color calibration on the measurement area image to obtain a difference matrix between the measurement area image and the ideal image of the leaf to be measured, and obtaining the ideal image according to the difference matrix; performing image processing on the ideal image to obtain pixel points of a leaf image in the ideal image; calculating the area of the leaf to be measured according to a pixel point of the leaf image and an actual area of the measurement areaimage on the white calibration board. The method of the invention inherits the advantages of the image measurement method, eliminates the interference of the environmental illumination factor, is fast, and has high environmental adaptability, high stability and high precision.
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Description

technical field

[0001] The invention relates to the field of plant leaf area measurement, in particular to a method and system for measuring plant leaf area based on color calibration. Background technique

[0002] Leaf is the main organ for photosynthesis in plants, and leaf area is an important factor to measure some plant mechanisms such as plant photosynthesis. Accurate measurement of leaf area is of great significance to the study of plant growth and the interaction between plants and the growth environment. The measurement of plant leaf area has changed from the original traditional means to the use of computer image processing technology to detect leaf area, and the measurement accuracy and reliability have been greatly improved.

[0003] The methods of measuring leaf area using computer technology can be roughly divided into image measurement method, photoelectric scanning method, and three-dimensional point cloud method. The image measurement method that collects i...

Examples

Embodiment 1

[0082] Embodiment one, as Figure 1-3 as shown, figure 1 It is a schematic flow chart of a method for measuring plant leaf area based on color calibration of the present invention, figure 2 It is a schematic diagram of a checkerboard calibration board of a method for measuring leaf area of ​​a plant based on color calibration in the present invention, image 3 It is a schematic diagram of extracting and measuring area images of a method for measuring plant leaf area based on color calibration in the present invention.

[0083] A method for measuring plant leaf area based on color calibration, comprising the following steps:

[0084] S1: Use a camera to collect the initial image of the blade to be measured on the white calibration plate, and extract the image of the measurement area according to the initial image;

[0085] S2: Perform color calibration on the measurement area image, obtain a difference matrix between the measurement area image and the ideal image of the bla...

Embodiment 2

[0142] Embodiment two, such as Figure 4-5 as shown, Figure 4 It is a structural schematic diagram of Embodiment 2 of a plant leaf area measurement system based on color calibration in the present invention, Figure 5 It is another structural schematic diagram of Embodiment 2 of a color calibration-based plant leaf area measurement system of the present invention.

[0143] Such as Figure 4 As shown, a plant leaf area measurement system based on color calibration includes an image acquisition unit, an image extraction unit, a color calibration unit, an image processing unit and a computing unit;

[0144] The image acquisition unit is used to acquire the initial image of the blade to be measured on the white calibration plate;

[0145] The image extraction unit is configured to extract a measurement area image according to the initial image;

[0146] The color calibration unit is configured to perform color calibration on the image of the measurement area, obtain a differe...

Embodiment 3

[0154] Embodiment three, as Figure 6-7 as shown, Figure 6 It is a structural schematic diagram of Embodiment 3 of the plant leaf area measurement system based on color calibration in the present invention, Figure 7 It is a schematic structural diagram of the measurement equipment in Embodiment 3 of the color calibration-based plant leaf area measurement system of the present invention.

[0155] Such as Figure 6-7 As shown, a plant leaf area measurement system based on color calibration, including acquisition equipment 1 and measurement equipment 2;

[0156] The collection device 1 is used to collect the initial image of the blade to be measured on the white calibration plate;

[0157] The measuring device 2, such as Figure 7 As shown, it includes a processor 21, a memory 22 and a computer program 23 stored in the memory and operable on the processor. The computer program implements the following steps when running:

[0158] S1: Use a camera to collect the initial ima...