Constructing method for topographic correction vegetation index

A vegetation index and terrain correction technology, which is applied to the reflection/re-radiation of radio waves, the use of re-radiation, measurement devices, etc. It can solve the problem of insufficient quantitative inversion of vegetation information in mountainous areas, cannot achieve terrain correction effects, and cannot cover the entire image. and other problems, to achieve the effect of eliminating differences in vegetation information, significant terrain correction effect, and low data economic cost.
CN101561502BInactive Publication Date: 2011-08-24FUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUZHOU UNIV
Publication Date
2011-08-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a constructing method for topographic correction vegetation index, comprising the following steps of: (1) carrying out radiative correction with different degrees according toobtained optical remote sensing image data source; (2) carrying out judgment and processing to nonvegetated dark matters; and (3) carrying out calculation to topographic correction vegetation index (TCVI). The method is adopted to construct the topographic correction vegetation index, thus making up the defect that the existing vegetation index can not eliminate topographic influence and eliminating the dependence to the topographic correction method based on DEM data. The invention can quantitatively and fast reflect the vegetable information of mountain areas only by needing two wave bandsof data, namely an infrared wave band and a near-infrared wave band.
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Description

technical field

[0001] The invention relates to a method for constructing terrain correction vegetation index. Background technique

[0002] Due to the influence of terrain in mountainous and hilly areas, there is a huge contrast in the band radiance information between the shady and sunny slopes of the mountain in optical remote sensing images, which seriously affects the accuracy of remote sensing quantitative inversion of vegetation information in mountainous areas.

[0003] The current inversion of vegetation information from optical remote sensing images mainly uses the method of vegetation index. The most commonly used vegetation indices are Normalized Difference Vegetation Index NDVI, Ratio Vegetation Index RVI, etc.; indices proposed to eliminate atmospheric influences include anti-atmospheric vegetation index ARVI, greenness anti-atmospheric vegetation index GARVI, visible light anti-atmospheric index VARI, etc. ; There are also indices proposed to eliminate the in...

Claims

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