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Method and device for quickly detecting area of leaf blade based on mobile phone

A blade area, fast technology, applied in the direction of measuring devices, optical devices, telephone structures, etc., can solve the problems that the measurement results are easily affected by the external environment, the measuring instruments are expensive, and the maintenance is difficult, so as to shorten the detection time, The effect of easy portability and simplified measurement steps

Active Publication Date: 2012-06-20
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Although the measurement is relatively fast, the measurement results are easily affected by the external environment, the stability is poor, and the photoelectric leaf area measuring instrument is expensive and difficult to maintain

Method used

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  • Method and device for quickly detecting area of leaf blade based on mobile phone
  • Method and device for quickly detecting area of leaf blade based on mobile phone
  • Method and device for quickly detecting area of leaf blade based on mobile phone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Embodiment 1: Device and instructions for use thereof

[0073] Such as figure 1 As shown, a mobile phone-based rapid leaf area detection device of the present invention includes a mobile phone 4, a background plate 1, a reference object 2 and a measured blade 3, and the reference object 2 and the measured blade 3 are respectively placed on the background board 1, and the mobile phone 4 is positioned vertically above the background board 1; the mobile phone 4 has the functions of photographing, storage, image processing, statistical analysis, human-computer interaction and display;

[0074] The color of the front of the background plate 1 is different from the color of the measured blade 3 and the color of the reference object 2;

[0075] The color of the reference object 2 is different from the color of the measured blade 3 .

[0076] Such as figure 1 As shown in the present invention, a mobile phone-based rapid leaf area detection device selects a background plate...

Embodiment 2

[0087] Embodiment two: detection method

[0088] a. If figure 1 As shown, choose a white opaque flat plate as the background plate 1. The area of ​​the background plate 1 should be larger than the area of ​​the leaves, and it is convenient to be imaged in the background plate area when shooting and framing.

[0089] b. Paste an area S on the front of the background board 1R = 4 square centimeters of reference object 2, the color of the reference object is black.

[0090] c. Lay the tested blade 3 flat on the front of the background plate 1 and be close to the position of the reference object 2 .

[0091] d. If figure 2 As shown, open the leaf area detection software in the mobile phone 4, click the "take photo" button on the main interface of the software, and take pictures through the camera of the mobile phone 4, and obtain the area of ​​the background plate 1, including the measured leaf 3 and the reference object 2. Complete digital photos included. When taking photo...

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Abstract

The invention discloses a method and device for quickly detecting the area of a leaf blade based on a mobile phone. The method comprises the following steps of: selecting a pure-color opaque flat plate of which the color of a front face is different from that of the leaf blade under test as a background plate, wherein the area of the background plate is greater than that of the leaf blade; fixing a reference object with an area of SR on the front face of the background plate, wherein the color of the reference object is different from those of the background plate and the leaf blade under test; placing the leaf blade under test on the front face of the background plate and acquiring a digital picture through image pickup of the mobile phone; performing graying, filtration, geometrical correction, binarization and region connected label processing on the picture to divide the picture into three regions, namely a background region, a reference object region and a region of the leaf blade under test; traversing picture data to obtain total number of pixels of the background plate, the reference object and the leaf blade under test; and finally, automatically calculating the area of the leaf blade under test by the mobile phone according to a formula through the total number of the pixels of the reference object and the leaf blade under test and the area of the reference object given by a user. Through the method and the device, the measuring steps are simplified, the detection time is shortened, and the measurement accuracy is improved.

Description

technical field [0001] Type the technical field description paragraph here. Background technique [0002] The invention relates to a method for detecting the area of ​​a blade, in particular to a method and device for quickly detecting the area of ​​a blade based on a mobile phone. Leaf is an important organ for photosynthesis and synthesis of organic matter in plants, and it is also the main way for plants to transpiration. Studying various parameters of plant leaves is of great significance to plant growth and development, crop yield and cultivation management. Establishing a convenient, fast, and accurate analysis method for plant leaves is of great significance for adjusting the population structure, making full use of light and heat resources, thereby guiding crop cultivation density and rational fertilization to obtain high crop yields. [0003] Leaf area is a commonly used index in crop cultivation and breeding practice. It is an evaluation index of crop yield and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/28H04M1/21
Inventor 郭文川周超超刘兴林韩文霆
Owner NORTHWEST A & F UNIV
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