High-resolution optical satellite staring image registration method based on geometric constraints

A technology with geometric constraints and high resolution, applied in the field of remote sensing satellite data processing, can solve the problems of inability to compensate for image deformation, large size of high-resolution images, changing image projection characteristics, etc., to achieve the effect of high-precision registration
CN107705329BActive Publication Date: 2021-03-16WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV
Publication Date
2021-03-16

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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.
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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...

Claims

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