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Method for MODIS bio-physical parameter forest information extraction

An information extraction and forest technology, applied in the fields of instruments, character and pattern recognition, computer parts, etc., can solve the problems of poor forest type recognition ability and classification accuracy can not meet production needs, and achieve the effect of increasing the number and improving the accuracy.

Inactive Publication Date: 2014-11-12
林辉 +1
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Problems solved by technology

[0003] In order to overcome the shortcomings of the existing MODIS image forest information extraction method that the classification accuracy cannot meet the production needs and the forest type recognition ability is poor, the present invention provides a forest information extraction method, which can not only extract forest information, but also facilitate Using Biophysical Parameter Products Provided by MODIS Satellite Imagery to Effectively Improve the Accuracy of Forest Cover Mapping and Forest Type Identification

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  • Method for MODIS bio-physical parameter forest information extraction
  • Method for MODIS bio-physical parameter forest information extraction

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Embodiment Construction

[0009] exist figure 1 Among them, ① computer classification based on surface reflectance, ② forest type identification based on time series sub-pixel EVI, ③ enhanced forest type identification based on BRDF parameters, and ④ biophysical parameter-assisted forest information composite extraction. The steps are sequential and progressive, through the step-by-step superposition of MODIS basic image information and biophysical parameters, and using the decision tree model to realize forest information extraction.

[0010] exist figure 2 In the shown embodiment, Hunan Province is selected as the object, and the 2006 MODIS standard image products (MOD09A1 surface reflectance product, MOD13Q1 vegetation index product, MCD43A1 BRDF / albedo parameter product and MOD15A2LAI / FPAR product) are used to carry out projection conversion and research Region cropping and other preprocessing. First, use the MOD09A1 surface reflectance product in August 2006, use the 2-6-3 band combination, and...

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Abstract

The invention relates to a method for MODIS satellite remote sensing image forest information extraction. According to the invention, images of bio-physical parameter standard products including an MODIS MOD09A1 surface reflectance product, an MOD13Q1 vegetation index product, an MCD43A1 BRDF / albedo parameter product and an MOD15A2 LAI / FPAR product and the like are integrated. Moreover, the method is characterized in that: information of different MODIS products with various types is coupled; a forest identification knowledge rule is established by a time sequence or a multi-temporal analysis and a forest information extraction composite model is constructed according to a decision tree algorithm; and regular step type superposition and inputting of variables are carried out, so that composite extraction of bio-physical parameter forest information is realized.

Description

Technical field [0001] The invention relates to a technology for extracting forest information from MODIS satellite remote sensing images, in particular to a remote sensing information extraction method capable of improving the accuracy of forest coverage mapping and forest type identification by using biophysical parameters. Background technique [0002] At present, the known remote sensing image forest information extraction generally uses remote sensing image spectral information. Supervised classification and unsupervised classification are carried out by computer and remote sensing processing software to realize forest mapping. Some methods add spatial structure information such as texture in remote sensing images as auxiliary information for classification. However, as a type of vegetation, forest is different from non-biological detection targets. Its growth and succession process embodies a variety of unique biophysical characteristics. However, traditional methods ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/46
Inventor 白丽明林辉
Owner 林辉
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