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A method for vegetation coverage measurement based on grb and grid model

A technology of vegetation coverage and measurement method, applied in the field of vegetation coverage measurement, can solve problems such as not necessarily suitable, achieve the effect of improving work efficiency, facilitating outdoor investigation, and avoiding heavy workload

Active Publication Date: 2019-01-25
HAINAN ACADEMY OF OCEAN & FISHERIES SCI
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Problems solved by technology

However, this method is more suitable for the calculation of moss coverage, but it is not necessarily suitable for the calculation of vegetation coverage of other plants or other environments.

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  • A method for vegetation coverage measurement based on grb and grid model
  • A method for vegetation coverage measurement based on grb and grid model
  • A method for vegetation coverage measurement based on grb and grid model

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Embodiment Construction

[0059] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0060] The vegetation coverage measurement method based on grb and grid pattern of the present embodiment, it comprises the following steps:

[0061] S1: if Figure 1 to Figure 3 As shown, image 10 is obtained by sampling. Among them, the process of obtaining the image 10 specifically includes the following steps: S11: take a picture and sample with a digital camer...

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Abstract

The invention relates to a vegetation coverage measurement method based on grb and grid mode, which comprises the following steps: S1, obtaining an image; 2, converting the image into pixel points, and judging each pixel point by the formula Fg= (2G-R-B) / (R + G + B); S3, dividing the image into grids, and judging whether the coverage ratio of vegetation points in each grid exceeds the upper limitthreshold or is lower than the lower limit threshold; S4: calculating the coverage, which is equal to the ratio of the total number of pixel points of the vegetation point to the total number of pixelpoints. The invention can analyze the attribute characteristics of each pixel element RGB by taking the actually taken digital photos as the information source, and calculate the coverage of the marine vegetation by cooperating with the fuzzy processing of the grid ratio, thus avoiding the shortcoming of large workload of the 'visual counting', facilitating the outdoor investigation and improvingthe work efficiency.

Description

technical field [0001] The invention relates to a method for measuring vegetation coverage, in particular to a method for measuring vegetation coverage based on grb and grid patterns. Background technique [0002] Marine vegetation coverage is an important quantitative indicator of marine plant community structure and an important indicator of marine vegetation status. In marine survey and evaluation, it is often used as an important indicator, and the accuracy of its measurement results has a great influence on the rationality of the research results. Coverage refers to the ratio of the vertical projection of vegetation branches and leaves to the ground area covered by the ground. [0003] In the prior art, there are mainly the following methods for measuring coverage. [0004] The first method is visual inspection, which is simple and fast, but has large errors and is affected by human subjective factors, so the repeatability is poor. The research results of relevant re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06T7/62
CPCG06T7/62G06T2207/30188G06T2207/10024G06V20/188
Inventor 吴钟解陈晓银林声康李元超陈石泉蔡泽富王道儒
Owner HAINAN ACADEMY OF OCEAN & FISHERIES SCI
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