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Method and system for image stabilization of spaceborne video based on rpc positioning model

A technology of video image stabilization and video image, applied in the field of spaceborne video image stabilization method and system based on RPC positioning model, which can solve the problem that the relationship between the same name points cannot be accurately described.

Active Publication Date: 2019-12-10
WUHAN UNIV
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  • Application Information

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Problems solved by technology

Since the motion deformation of inter-frame images involves complex deformations caused by camera distortion, imaging angles, and terrain fluctuations, the classical inter-frame transformation model cannot accurately describe the relationship between the same-named points between adjacent frames.

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  • Method and system for image stabilization of spaceborne video based on rpc positioning model
  • Method and system for image stabilization of spaceborne video based on rpc positioning model
  • Method and system for image stabilization of spaceborne video based on rpc positioning model

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Embodiment Construction

[0083] The present invention comprises the steps: step 1, constructing the RPC model of each frame image in the spaceborne video image sequence; step 2, realizing the matching of the frame images in the spaceborne video image sequence based on SIFT feature matching, and extracting the points of the same name between frames; step 3, Based on the RPC model, the frame image orientation in the spaceborne video image sequence is realized, and the orientation adjustment of the reference frame and other frames is realized, so that the points with the same name meet the geometric positioning consistency; step 4, use the positioning consistency constraints constructed by the RPC model to realize the re- Sampling to obtain a resampled image, that is, a stabilized image. The inter-frame image stabilization of the spaceborne video image sequence is realized through steps 1-4.

[0084] The technical solution of the present invention will be described in detail below in conjunction with the...

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Abstract

The present invention discloses a method and system for spaceborne video image stabilization based on a RPC location model. The method comprises: the step 1, constructing the RPC model of each frame image in a spaceborne video image sequence; the step 2, realizing the matching of frame images in the spaceborne video image sequence based on the SIFT feature matching, and extracting interframe homonymy points; the step 3, realizing the orientation of the frame images in the spaceborne video image sequence based on the RPC model, realizing the orientation adjustment of a reference frame and other frames, and satisfying geometry location consistency among the homonymy points; and the step 4, employing the location consistency constructed by the RPC model to restrain the realization of resampling, and obtaining resampling images, namely image stabilization images. The method and system for spaceborne video image stabilization based on the RPC location model consider the influences of camera distortion, topographic inequality and the like on the image stabilization precision to ensure the video satellite image stabilization precision.

Description

technical field [0001] The invention belongs to the technical field of image stabilization processing of satellite-borne video image sequences, and in particular relates to a method and system for image stabilization of satellite-borne video based on an RPC positioning model. Background technique [0002] Video satellite is a new type of optical imaging satellite that has appeared in recent years. In 2013, Skybox Imaging launched the first video satellite, Skysat, which ushered in a new era of high-efficiency dynamic remote sensing. my country's National University of Defense Technology launched the self-developed "Tiantuo-2" satellite in 2014. As a scientific experiment satellite, the satellite adopts the video imaging system for the first time in China. In 2015, Changguang Satellite Technology Co., Ltd. launched the "Jilin-1" satellite, which is the first domestic satellite capable of shooting full-color video. Different from ground-based videos, spaceborne videos cause “...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/21
CPCH04N5/21
Inventor 张过蒋永华汪韬阳崔子豪徐凯
Owner WUHAN UNIV