A Method and System for Optical Satellite Video Stabilization with Geocoding
An optical satellite and video image stabilization technology, applied in the parts of TV systems, TVs, color TVs, etc., can solve the problem that the geometric quality of video image stabilization cannot be guaranteed, it is difficult to take into account the geometric deformation of lens distortion, and it is difficult to achieve sub-pixel-level video stabilization. questions like
Inactive Publication Date: 2020-11-03
WUHAN UNIV
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Although these video image stabilization models are simple and easy to use, they face two main problems for optical video satellites: 1) It is difficult to take into account the geometric deformation caused by lens distortion and terrain fluctuations, and as the spatial resolution of the video camera and the video width increase With continuous improvement, the geometric deformation between frames will become more and more obvious, so that it is difficult to achieve sub-pixel-level video stabilization with these video image stabilization models
It can be seen that it is difficult to fully describe the influence of many error sources on the geometric relationship between video image frames by using the traditional simple video image stabilization model, so that the geometric quality of video image stabilization cannot be guaranteed.
2) For the users of optical video satellites, it is usually necessary to obtain the geometric information of the target of interest from the video data, such as the position and velocity of the moving target, and the video data obtained by using the traditional video image stabilization model for video image stabilization processing will be Difficult to meet the needs of this application
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[0072] In order to more clearly illustrate the embodiments of the present invention and / or the technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings and other implementation.
[0073] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0074] The embodiment of the present invention builds an inter-frame geometric correction model of the auxiliary frame image on the basis of the optical satellite video image orientation model, uses the inter-frame geometric correction parameter to correct the orientation parameter of the auxiliary frame image, and then uses the corrected orientation parameter, Geocoding video images can eliminate the geometric deforma...
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The invention discloses an optical satellite video image stabilization method and system with geographic coding, which includes sequentially taking the previous frame of two adjacent frames of video images as the main frame and the latter frame as the auxiliary frame to obtain several pairs of main frames and Auxiliary frame image; video image inter-frame matching, to obtain the matching point between each pair of main frame and auxiliary frame image; construct video image inter-frame geometric correction model; solve inter-frame geometric correction parameters of auxiliary frame image; for auxiliary frame image Inter-frame geometric correction is performed on the directional parameters of the directional parameters to obtain the corrected directional parameters; the video image is geocoded to obtain a geocoded stabilized image. The invention guarantees the image stabilization accuracy of the optical satellite video image, and at the same time, the obtained image stabilization image is provided with geographic codes, which is convenient for users to directly obtain the geometric information of the target of interest from the video data.
Description
technical field [0001] The invention belongs to the technical field of geometric processing of optical satellite video images, in particular to an optical satellite video image stabilization method and system with geographic coding. Background technique [0002] The video camera carried on the optical video satellite can obtain high-frequency time-series images of the target area through staring imaging mode. Using these high-frequency time-series images, continuous observation of the motion process can be realized, which is especially suitable for the tracking and analysis of the instantaneous characteristics of moving targets such as aircraft and ships, as well as the real-time monitoring of high-dynamic and short-time-slot phenomena such as forest fires and floods. [0003] In order to give full play to the effectiveness of optical video satellites, it is first necessary to solve the problem of image stabilization of video images. The accuracy of video image stabilizatio...
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IPC IPC(8): H04N5/21G06K9/46G06K9/62
CPCH04N5/21G06V10/462G06V10/751
Inventor 曹金山张致齐王密
Owner WUHAN UNIV