Normalized difference vegetation index scale conversion model construction method and device

A technology of scale conversion and vegetation index, applied in character and pattern recognition, instruments, computer parts, etc., it can solve the problems of rough classification of ground objects, inability to accurately reflect the influence of surface spatial heterogeneity, etc., and achieve the effect of improving precision

Active Publication Date: 2019-05-14
XIAMEN UNIV OF TECH
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Problems solved by technology

[0010] In view of this, the purpose of the embodiment of the present invention is to provide a normalized difference vegetation index scale conversion model construction method to improve the existing ground surface parameter upscaling conversion research. Question of Qualitative Impact

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  • Normalized difference vegetation index scale conversion model construction method and device
  • Normalized difference vegetation index scale conversion model construction method and device
  • Normalized difference vegetation index scale conversion model construction method and device

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[0079] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0080] It should be noted that like numerals and let...

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Abstract

The embodiment of the invention provides a normalized difference vegetation index scale conversion model construction method and device. The method comprises the steps of obtaining an OLI remote sensing image of a target area; Wherein the OLI remote sensing image has a first spatial resolution; Preprocessing the OLI remote sensing image; Carrying out object-oriented classification on the OLI remote sensing image to obtain a fine classification result; Determining an acquisition window according to the target spatial resolution; carrying out pixel combination on the OLI remote sensing image according to the acquisition window; and calculating to obtain an NDVI value of the merged pixel, so as to obtain an NDVI upscale image with target spatial resolution, thereby verifying the NDVI image with the same target spatial resolution generated by the MODIS product according to the NDVI upscale image. According to the method, the images are finely classified, so that the NDVI scale effect caused by the surface spatial heterogeneity is more meticulous and deeper.

Description

technical field [0001] The invention relates to the technical field of index scale conversion, in particular to a method and device for constructing a normalized difference vegetation index scale conversion model. Background technique [0002] The normalized difference vegetation index (NDVI), as the best indicator of vegetation growth status and vegetation coverage, is widely used in environmental (climate) change, crop yield estimation and other fields. Among the existing vegetation index products, the MODIS vegetation index product has attracted much attention due to its advantages of free use, stable supply, global coverage, and continuous time phase. It is widely used in monitoring research. However, the highest spatial resolution of MODIS vegetation index products is 250m, and the authenticity test of this remote sensing surface parameter is an important issue that cannot be avoided. The authenticity test of MODIS vegetation index products needs to be carried out thr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62
Inventor 栾海军牛阳何原荣刘光生章欣欣聂芹
Owner XIAMEN UNIV OF TECH
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