A method for generating change trajectories for monitoring auroral activity

A technology of aurora and trajectory, applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve problems such as inappropriateness, and achieve the effect of improving accuracy and comprehensive display

Inactive Publication Date: 2016-08-17
XIAN UNIV OF POSTS & TELECOMM
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Problems solved by technology

Therefore, it is inappropriate to use a uniform regularization method for estimating auroral motion

Method used

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  • A method for generating change trajectories for monitoring auroral activity
  • A method for generating change trajectories for monitoring auroral activity
  • A method for generating change trajectories for monitoring auroral activity

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Embodiment Construction

[0036] The technical idea of ​​realizing the present invention is: first, preprocess the original all-sky image, and use the data constraint equation based on the continuity equation for the preprocessed all-sky aurora sequence, and combine the self-adaptive non-uniform regularization scheme to extract the all-sky aurora The instantaneous motion field of the video image, and then calculate the local vector difference of the motion vector, and count the two-dimensional histogram of the local vector difference in the space-time domain to characterize the aurora sequence, and finally calculate the χ of two adjacent aurora videos 2 distance to obtain the change track of aurora activity, the specific implementation steps are as follows:

[0037] The present invention will be further described below by specific embodiment:

[0038] like figure 1 As shown, the method for generating the change track for monitoring auroral activity of the present invention, the steps are as follows: ...

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Abstract

The invention discloses a generation method for monitoring a change track of the auroral activity and provides an extraction method of the movement field of an all-sky auroral image on the basis of the fluid characteristics and the multi-scale movement characteristics of aurora. The method comprises the steps: a regularized strategy is selected in a self-adaptive manner according to the resolution of current data and the performances of the auroral activity, then the representation to the an auroral video is realized on the basis of the extracted movement field and the difference between among auroral video sequences is further measured so as to monitor the change of the auroral activity. The representation method based on the movement field has the advantages that the rich two-dimensional morphological characteristics and movement modes are effectively embodied, the generated change track can position the position of sudden change of the aurora accurately and a new means is provided for researching the space physics.

Description

technical field [0001] The invention belongs to the technical field of pattern recognition and intelligent processing, relates to video motion field extraction and dynamic texture representation, can be used to monitor changes in aurora activities and estimate aurora activity periods, and particularly relates to a generation method for monitoring changes in aurora activities . Background technique [0002] The aurora is the only geophysical phenomenon with polar characteristics that can be directly observed with the naked eye, and it is the most concentrated form of solar-terrestrial physical processes (especially the magnetosphere-ionosphere interaction) in the polar region. At present, there are many ways to obtain auroral data, including all-sky imaging equipment, auroral radar systems, magnetometer arrays, cosmic noise measurement arrays, and meridian scanning photometer arrays. The advantage of the all-sky auroral data used in this project is that it can obtain two-dim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/54G06K9/62
Inventor 王倩杨惠根胡红桥胡泽骏
Owner XIAN UNIV OF POSTS & TELECOMM
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