Leaf area index determining method and apparatus

A technology of leaf area index and measurement method, applied in the field of ecology, can solve the problems of destructive, time-consuming and labor-intensive measurement, and achieve the effect of convenient measurement, timely and economical acquisition of information

Inactive Publication Date: 2016-01-06
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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Problems solved by technology

[0003] At present, there are many methods for measuring leaf area, mainly including paper weight method, dry weight method, length-width coefficient method, leaf area meter method, scanner method, regression equation method, etc. These methods have their own advantages, but they also have time-consuming and labor-intensive problems. , measurement is destructive and other disadvantages

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  • Leaf area index determining method and apparatus
  • Leaf area index determining method and apparatus
  • Leaf area index determining method and apparatus

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Embodiment Construction

[0052] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0053] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof.

[0054] Those sk...

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Abstract

The invention relates to a leaf area index determining method and apparatus. The method comprises obtaining a canopy image of vegetation to be determined; performing image segmentation on the obtained canopy image by use of an image processing technology, and extracting an image region corresponding to the vegetation to be determined in the canopy image; calculating a ratio of the area of the image region corresponding to the vegetation to be determined to the total area of the canopy image, and obtaining a leaf area index of the vegetation to be determined; and performing fitting on the calculated leaf area index and an actually measured leaf area index to obtain a leaf area index model of the vegetation to be determined. According to the invention, the method and apparatus have the advantages of convenient measurement of the leaf area index, timely information obtaining and high economic benefits and effectiveness, thereby having great significance in the fields of crop growth vigor monitoring, output estimation and the like.

Description

technical field [0001] The invention relates to the field of ecology, in particular to a method and device for measuring leaf area index. Background technique [0002] Leaf area index LAI (LeafAreaIdex), also known as leaf area coefficient, is the ratio of the total area of ​​crop leaves on a piece of land to the area occupied. Leaf area index is a good dynamic index to reflect the size of crop population, and it is also one of the important agronomic indexes to characterize crop growth and predict crop yield. [0003] At present, there are many methods for measuring leaf area, mainly including paper weight method, dry weight method, length-width coefficient method, leaf area meter method, scanner method, regression equation method, etc. These methods have their own advantages, but they also have time-consuming and labor-intensive problems. , The measurement is destructive and other shortcomings. [0004] With the development of computer image processing technology and ima...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/60G06T7/00
CPCG06T2207/10004G06T2207/10024
Inventor 邹金秋陈佑启谢锋刘佳吴永常杨国宝
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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