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Method for extracting dynamic information from different speed intervals of solar high-resolution sequential images

A technology of sequential images and dynamic information, applied in the field of astronomical technology and image processing, can solve problems such as information loss and failure

Active Publication Date: 2017-04-19
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the feature changes between the two processed frames are small, this method will fail.
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  • Method for extracting dynamic information from different speed intervals of solar high-resolution sequential images
  • Method for extracting dynamic information from different speed intervals of solar high-resolution sequential images
  • Method for extracting dynamic information from different speed intervals of solar high-resolution sequential images

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Embodiment 1

[0025] Embodiment 1: as Figure 1-7 As shown, a method for extracting dynamic information in different velocity intervals in high-resolution sequence images of the sun. First, align the initial sequence images; Convert to the three-dimensional frequency wavenumber domain; then set the extracted parameters according to the physical characteristics such as wavenumber and time frequency of dynamic information in different speed intervals and the characteristics of time and space distribution, in a two-dimensional wavenumber coordinate (k x , k y ), a three-dimensional frequency wavenumber cube composed of time frequency ω (k x , k y , ω) performs velocity filtering on the data in the three-dimensional frequency wavenumber domain; the data obtained by the filtering result is returned to the three-dimensional space-time domain through three-dimensional Fourier inverse transform to obtain an inverse transform sequence image containing dynamic information in the required velocity r...

Embodiment 2

[0033] Embodiment 2: as Figure 1-7 As shown, a method for extracting dynamic information in different velocity intervals in high-resolution sequence images of the sun. First, align the initial sequence images; Convert to the three-dimensional frequency wavenumber domain; then set the extracted parameters according to the physical characteristics such as wavenumber and time frequency of dynamic information in different speed intervals and the characteristics of time and space distribution, in a two-dimensional wavenumber coordinate (k x , k y ), a three-dimensional frequency wavenumber cube composed of time frequency ω (k x , k y , ω) performs velocity filtering on the data in the three-dimensional frequency wavenumber domain; the data obtained by the filtering result is returned to the three-dimensional space-time domain through three-dimensional Fourier inverse transform to obtain an inverse transform sequence image containing dynamic information in the required velocity r...

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Abstract

The invention relates to a method for extracting dynamic information from different speed intervals of solar high-resolution sequential images, and belongs to the fields of astronomical technology and image processing. Initial sequential images are aligned; aligned sequential image data is converted into 3D frequency wave-number-domain data; according to proposed effects and parameters, a speed filter carries out speed filtering on the 3D frequency wave-number-domain data of the aligned sequential images; 3D inverse Fourier transform is carried out on filtering data to convert the data into a 3D time-space domain and further to obtain inverse transformation sequential images; and the inverse transformation sequential images are normalized to obtain sequential images which include dynamic information of needed speed intervals and can be identified clearly. According to the invention, 3D Fourier transform is used, speed filtering is carried out in the 3D frequency wave-number-domain, and dynamic information is extracted from different moving speed intervals in the 3D frequency wave-number-domain.

Description

technical field [0001] The present invention relates to a method for extracting dynamic information in different velocity intervals in high-resolution sequence images of the sun, in particular to a method for extracting dynamic information in different velocity intervals in high-resolution sequence images of the sun in astronomical images in the three-dimensional frequency wavenumber domain method. It belongs to the field of astronomy technology and image processing. Background technique [0002] In the high-resolution sequence images of the sun, the scientific significance of studying the changes of its dynamic information is that the sequence images contain a large amount of kinematic information of solar activities of different scales, frequencies, and speeds. These kinematic information are solar dynamic mechanisms form of expression. If we can quantitatively extract more effective information, it will be beneficial to study the evolution laws of various solar activiti...

Claims

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Application Information

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IPC IPC(8): G06T7/262G06T7/285G06T7/33
CPCG06T2207/10012
Inventor 冯松佟立越季凯帆杨云飞王锋邓辉
Owner KUNMING UNIV OF SCI & TECH