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Vegetation height analysis method and system based on satellite remote sensing stereo imaging pair

A technology of three-dimensional imaging and satellite remote sensing, applied in image analysis, image enhancement, image data processing, etc., can solve the problem of difficult to achieve vegetation height analysis in large areas, and achieve the effect of convenient data update and strong timeliness

Active Publication Date: 2021-08-20
成都天巡微小卫星科技有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is: there are many disadvantages in the existing vegetation height analysis method, and it is difficult to realize the vegetation height analysis in a large area. Insufficiency of Existing Vegetation Height Analysis Methods

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  • Vegetation height analysis method and system based on satellite remote sensing stereo imaging pair
  • Vegetation height analysis method and system based on satellite remote sensing stereo imaging pair
  • Vegetation height analysis method and system based on satellite remote sensing stereo imaging pair

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Embodiment 1

[0069] In order to overcome the high cost of obtaining original images in the existing technology, it is greatly affected by weather and airspace, the production period is long, and the data update is inconvenient, the timeliness cannot be guaranteed, and it is difficult to estimate the vegetation height in large areas , for forests with high vegetation coverage density, it is difficult to obtain the shadow of standing trees on the ground in the image, and it cannot be used for the extraction of height information of dense forest stands. This embodiment provides a vegetation image based on satellite remote sensing stereo imaging The height analysis method, its overall flow chart is as follows figure 1 shown. This method is implemented by:

[0070] Step 1: Obtain the original satellite image and the satellite stereo image pair file, construct the stereo image pair, and use the stereo image pair to generate a digital surface model. The production process of the digital surface ...

Embodiment 2

[0102] A vegetation height analysis system based on satellite remote sensing stereo imaging pairs, comprising:

[0103] The data collection module is used to collect satellite original images and satellite stereo imaging pair files;

[0104] Stereo image pair construction module, used for constructing stereo image pair according to satellite original image and satellite stereo imaging pair file;

[0105] A digital surface model generating module, configured to generate a digital surface model using the stereo pair matching;

[0106] A configuration module, configured to register the digital surface model and the digital elevation model, and eliminate the elevation reference difference between the digital surface model and the digital elevation model;

[0107] A data preprocessing module, configured to process the original satellite image to obtain a standard satellite image;

[0108] A training sample selection module, configured to select training samples from the standard sa...

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Abstract

The invention discloses a vegetation height analysis method and system based on a satellite remote sensing stereo imaging pair. A vegetation height model is rapidly and efficiently obtained through a vegetation information layer extracted by superposing a height model which is generated by differential operation of DSM and DEM and covers all surface features. Firstly, a DSM is generated through matching of a high-resolution satellite stereo image pair, then the DSM generated through matching is registered with a laser radar DEM, then vegetation information is extracted through a satellite image, and finally the vegetation height model is extracted. According to the method, the height information of the vegetation can be efficiently, quickly and accurately extracted in a large-area range through the steps, the influence of weather and airspace is small, data updating is convenient, and the method has high timeliness.

Description

technical field [0001] The invention relates to a vegetation height analysis method, in particular to a vegetation height analysis method and system based on a satellite remote sensing stereo imaging pair. Background technique [0002] The forest ecosystem is the main body of the terrestrial ecosystem, and its primary productivity (GPP) accounts for 75% of the total primary productivity of the terrestrial ecosystem. Therefore, accurate description of the spatial distribution pattern and dynamic changes of forest vegetation carbon storage is the basis for terrestrial ecosystem carbon budget accounting. As an important indicator of forest aboveground biomass, accurate estimation of forest height is the key to improving the accuracy of forest vegetation carbon storage estimation. [0003] The traditional method of vegetation height measurement is ground survey. Ground survey is not only time-consuming, inefficient, but also has high labor cost and is prone to errors. Moreover,...

Claims

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Application Information

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IPC IPC(8): G06T7/33G06K9/62
CPCG06T7/344G06T2207/10032G06T2207/20081G06T2207/30188G06F18/24G06F18/214
Inventor 郑覃
Owner 成都天巡微小卫星科技有限责任公司
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