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Automatic registration method for panchromatic images and multispectral images of Gaofen-7 satellite

A multi-spectral image, panchromatic image technology, applied in the field of aerospace remote sensing

Active Publication Date: 2021-09-14
自然资源部国土卫星遥感应用中心
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for automatic registration of panchromatic images and multi-spectral images of Gaofen-7 satellite, thereby solving the aforementioned problems existing in the prior art

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  • Automatic registration method for panchromatic images and multispectral images of Gaofen-7 satellite
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  • Automatic registration method for panchromatic images and multispectral images of Gaofen-7 satellite

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[0051] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0052] Such as figure 1 As shown, this embodiment provides a method for automatic registration of panchromatic images and multi-spectral images of Gaofen-7 satellite, including the following steps,

[0053] S1. Obtain geometric imaging model parameters of panchromatic images and multispectral images of each band, and construct geometric imaging models of panchromatic images and multispectral images of each band;

[0054] S2. Using the geometric imaging model parameters of the panchromatic image and multi-spectral images in each band, construct a unified virtual CCD geometric imaging model for pan...

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Abstract

The invention discloses an automatic registration method for panchromatic images and multispectral images of a Gaofen-7 satellite, which comprises the following steps of: S1, acquiring geometric imaging model parameters of the panchromatic images and the multispectral images in various wave bands, and constructing geometric imaging models of the panchromatic images and the multispectral images in various wave bands; S2, constructing a unified virtual CCD geometric imaging model of the panchromatic image and the multispectral image of each wave band by using geometric imaging model parameters of the panchromatic image and the multispectral image of each wave band; and S3, generating a strictly registered panchromatic image and a strictly registered multispectral image based on a unified virtual CCD geometric imaging model of the panchromatic image and the multispectral image of each wave band. The method has the advantages that the registration problem of the panchromatic image and the multispectral image of the Gaofen-7 satellite can be effectively solved, and automatic registration of the two images is realized by constructing a virtual unified CCD in sensor correction processing.

Description

technical field [0001] The invention relates to the technical field of aerospace remote sensing, in particular to a method for automatic registration of panchromatic images and multispectral images of Gaofen-7 satellite. Background technique [0002] The registration of multispectral images and panchromatic images is the process of arranging them together according to a certain mapping relationship according to geographical distribution. The new image not only retains the high spatial resolution characteristics of panchromatic images, but also retains the multispectral image. characteristic. The accuracy of image registration has a direct impact on subsequent applications such as image fusion, image mosaic, and satellite tremor analysis. Therefore, high-precision and robust image registration is a very important research direction. [0003] There are mainly two kinds of existing multispectral and panchromatic image registration methods, which are image-space-based registra...

Claims

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Application Information

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IPC IPC(8): G06T7/30G06T5/00
CPCG06T7/30G06T2207/10024G06T2207/10032G06T2207/10052G06T5/80
Inventor 刘昌儒唐新明王霞岳庆兴周平郭莉张恒
Owner 自然资源部国土卫星遥感应用中心
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