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Method for generating rational function imaging model of two-stage/three-stage satellite image products

An imaging model, rational function technology, applied in the re-radiation of electromagnetic waves, instruments, measuring devices, etc., can solve problems such as inability to correct geometric models

Inactive Publication Date: 2009-12-09
WUHAN UNIV
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Problems solved by technology

It solves the bottleneck problem in the application of satellite remote sensing images that the geometric model cannot be used for further fine correction of the geometric products of satellite images at all levels

Method used

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  • Method for generating rational function imaging model of two-stage/three-stage satellite image products
  • Method for generating rational function imaging model of two-stage/three-stage satellite image products
  • Method for generating rational function imaging model of two-stage/three-stage satellite image products

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Embodiment 3

[0144] In Example 3, if the inverse transformation formula of the rigorous mathematical model of the secondary image and the forward transformation formula of the rigorous mathematical model of the secondary image are used, the inverse calculation formula of the rigorous geometric model of the secondary image can be directly obtained by using the procedures established in steps 1.1, 1.2, 1.3, and 1.4 (x 2 ,y 2 ) = T 2 -1 (D lat ,D lon , h) as the inverse transformation formula of the rigorous mathematical model of the secondary image. The forward transformation formula of the rigorous mathematical model of the secondary image is obtained through the following process:

[0145] Step a, from the image coordinates of any point on the secondary image (x 2 ,y 2 , h) According to the image information of the secondary image, it is transformed into the projection surface coordinates (D east ,D north );

[0146] Step b, according to the projection transformation formula, the...

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Abstract

The invention relates to a method for generating a rational function imaging model of two-stage / three-stage satellite image products: utilizing the inverse conversion of a two-stage geometric model to establish a control point grid and to establish an RPC model of a two-stage geometric product; utilizing the inverse conversion of a one-stage-generated three-stage product to establish a control point grid and to establish an RPC model of a three-stage geometric product; and utilizing the inverse conversion of a two-stage-generated three-stage product to establish a control point grid and to establish a rational function imaging model of the three-stage geometric product. The invention endues the two-stage and the three-stage products with much more advantages during further application.

Description

technical field [0001] The invention belongs to the technical field of photography and imaging, and in particular relates to a method for generating a rational function imaging model of satellite image secondary / tertiary products. Background technique [0002] In order to meet the different needs of different users for satellite remote sensing images, some experts in this field proposed to classify the geometric products of satellite images. However, at present, the rigorous imaging geometric models of satellites are all aimed at the first-level satellite products, and there is no research on the rigorous imaging geometric models of other satellite-level geometric products, so other satellite-level products have not been effectively applied. . However, with the continuous development of various remote sensing satellites and the continuous improvement of the application level of geometric products of remote sensing satellites, it is necessary to further fine-tune the product...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/48G01S17/89
Inventor 张过江万寿刘斌
Owner WUHAN UNIV