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Geometric constraint-based high-resolution optical satellite staring image registration method

A geometrically constrained, high-resolution technology, applied in the field of remote sensing satellite data processing, can solve problems such as inability to compensate image deformation, change image projection characteristics, and large size of high-resolution images, and achieve high-precision registration.

Active Publication Date: 2018-02-16
WUHAN UNIV
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Problems solved by technology

However, due to the large size of high-resolution images, the number of rows and columns can reach more than tens of thousands, and a single 2D image square affine transformation cannot compensate for the deformation between images
At the same time, considering the characteristics of central projection imaging, for areas with large terrain fluctuations and high buildings, the projection difference between images caused by imaging at different angles is also a feature of staring imaging, and the image square registration method may change the image projection characteristics

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[0063] In order to more clearly illustrate the embodiments of the present invention and / or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are only embodiments of the present invention, and those skilled in the art can also obtain other drawings based on these drawings and obtain other implementation.

[0064] figure 1 Shown is the specific flow chart of the high-resolution optical satellite staring image registration method based on geometric constraints of the present invention, and the specific implementation of the method of the present invention will be described in detail below for each step in the specific process.

[0065] The method of the present invention relies on the geometric imaging model of multi-angle staring sequence images, uses the free network adjustment method to refine the geomet...

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Abstract

The invention discloses a geometric constraint-based high-resolution optical satellite staring image registration method. The method comprises the steps of S100, building a free network adjustment directional model of images by utilizing a rational function model of additional image space error compensation; S200, based on the free network adjustment directional model, performing dense matching ona stereoscopic image pair with an optimal rendezvous condition in the images to obtain coordinates of dense homonymy points; S300, generating dense point cloud data, performing gross error point deletion on the dense point cloud data, and generating digital surface model data; and S400, based on the free network adjustment directional model and DSM data, performing geometric correction on the images in sequence. By utilizing geometric locating consistency, high-precision registration of high-resolution optical satellite multi-angle staring sequence images is realized; the multi-angle staringsequence image registration problem caused by satellite platform control inaccuracy and attitude measurement inaccuracy is solved; and a high-precision data basis can be provided for subsequent application.

Description

technical field [0001] The invention belongs to the technical field of remote sensing satellite data processing, more precisely, the invention is a high-resolution optical satellite staring image registration method based on geometric constraints adopted in the ground data processing process of optical remote sensing satellites. Background technique [0002] With the gradual improvement of resolution, in order to make up for the decrease in imaging efficiency caused by the reduction of imaging width, the requirements for high-resolution remote sensing satellites' platform agility are constantly increasing, so that they can quickly maneuver imaging to meet the needs of large-scale target areas. or multi-angle imaging requirements. The staring imaging mode is an agile imaging mode for optical satellites. By adjusting the attitude of the satellite platform, different positions of the satellite on the flight track can image the same area from different angles, and obtain multi-a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/38
CPCG06T2207/10028G06T2207/30181G06T7/38
Inventor 朱映王密金淑英程宇峰
Owner WUHAN UNIV
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