Satellite multispectral image registration method based on object space positioning consistency

A multi-spectral image and object positioning technology, which is applied to the interpretation of photos, measuring devices, instruments, etc., can solve the problems of difficult to guarantee registration quality, affect processing and application, and reduce registration efficiency

Active Publication Date: 2013-09-25
WUHAN UNIV
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Problems solved by technology

[0003] At present, a lot of research and practical work have been carried out on the satellite multispectral image registration method based on image matching. The dependence of this kind of method on the quality of matching makes its applicability limited. The re...

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  • Satellite multispectral image registration method based on object space positioning consistency
  • Satellite multispectral image registration method based on object space positioning consistency
  • Satellite multispectral image registration method based on object space positioning consistency

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Embodiment Construction

[0063] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples. The process of the embodiment can be divided into two steps, and the specific method, formula and process implemented in each step are as follows:

[0064] Step 1. Select a certain spectral segment in the multi-spectral camera as the reference spectral segment, and the rest of the spectral segments are non-reference spectral segments. Using an image with better quality, for each non-reference spectral segment, the difference between the non-reference spectral segment and the reference spectral segment The relative geometric distortion between them is checked on the track, and the check results are saved for subsequent image registration. Assuming that the reference spectrum is denoted as B2, and any non-reference spectrum is denoted as B1, for the non-reference spectrum B1, the specific steps and formulas for on-orbit calibra...

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Abstract

The invention discloses a satellite multispectral image registration method based on object space positioning consistency. The method comprises the following steps: selecting a certain spectrum in a multispectral camera as a reference spectrum, taking the residual spectrums as non-reference spectrums, respectively performing on-track calibration aiming at the relative geometric distortion between each non-reference spectrum and the reference spectrum, and saving the calibration result; establishing a strict geometric imaging model of each spectrum by utilizing the saved calibration result based on the object space positioning consistency, and performing accurate registration on the non-reference spectrums and the reference spectrum. The invention provides an optical satellite multispectral image high-precision automatic registration method of really geometrical significance, the satellite multispectral image can be subjected to high-precision automatic registration without carrying out image matching, the processing efficiency is improved, and the registration quality is irrelevant to the image quality and ground feature types; and meanwhile, a geometric correction model between wave bands is the strict geometric imaging model and has strictness in theory. The practice proves that the method is feasible, effective, stable in registration quality and high in precision.

Description

technical field [0001] The invention belongs to the field of geometric processing of remote sensing images, and relates to a satellite multispectral image registration method based on the consistency of object positioning. Background technique [0002] Because multispectral cameras can acquire images of multiple bands, through subsequent processing such as registration and fusion, they can generate various thematic image products, which greatly enriches image information and improves the application potential of image data. It has become the current remote sensing satellite An important imaging payload carried. The registration of images in various bands is an important part of multispectral image processing, and the registration efficiency, accuracy and reliability directly affect the quality of its subsequent processing and application. [0003] At present, a lot of research and practical work have been carried out on the satellite multispectral image registration method ...

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Application Information

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IPC IPC(8): G01C25/00G01C11/04
Inventor 王密杨博金淑英李德仁
Owner WUHAN UNIV
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