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Method for cleaning solar photosphere bright spot in astronomical image

A technology of astronomical images and sunlight, applied in instruments, character and pattern recognition, computer parts and other directions, can solve problems such as misrecognition

Inactive Publication Date: 2016-03-16
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

[0005] The invention provides a method for cleaning the bright spots of the solar photosphere in astronomical images. The DBSCAN clustering method in data mining is applied to the data cleaning of the bright spots of the photosphere, and the non-bright spot structure is cleaned out, which is used to solve the problems existing in the traditional method for identifying bright spots. misidentification problem

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  • Method for cleaning solar photosphere bright spot in astronomical image
  • Method for cleaning solar photosphere bright spot in astronomical image
  • Method for cleaning solar photosphere bright spot in astronomical image

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Embodiment 1

[0024] Embodiment 1: as Figure 1-5 As shown, a method for cleaning the bright spots of the solar photosphere in astronomical images, first preprocesses the sequence images, and then uses a method combining Laplacian filtering and morphological dilation to identify the bright spots; and then through the three-dimensional connected The method tracks bright spots; then extracts multiple low-correlation eigenvalues ​​of bright spots as cleaned data; then, performs z-score standardization on the cleaned data; then uses principal component analysis to convert high-dimensional standardized data Carry out dimensionality reduction; finally, the data after dimensionality reduction is cleaned by DBSCAN method, so as to eliminate non-bright spot structures.

[0025] The specific steps of the method for cleaning the bright spots of the solar photosphere in the astronomical image are as follows:

[0026] Step1. Bright spot data identification; first, preprocess the sequence image, includi...

Embodiment 2

[0033] Embodiment 2: as Figure 1-5 As shown, a method for cleaning the bright spots of the solar photosphere in astronomical images, first preprocesses the sequence images, and then uses a method combining Laplacian filtering and morphological dilation to identify the bright spots; and then through the three-dimensional connected The method tracks bright spots; then extracts multiple low-correlation eigenvalues ​​of bright spots as cleaned data; then, performs z-score standardization on the cleaned data; then uses principal component analysis to convert high-dimensional standardized data Carry out dimensionality reduction; finally, the data after dimensionality reduction is cleaned by DBSCAN method, so as to eliminate non-bright spot structures.

[0034] The specific steps of the method for cleaning the bright spots of the solar photosphere in the astronomical image are as follows:

[0035] Step 1. Bright spot data identification; first, use the alignment method of maximum l...

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Abstract

The present invention relates to a method for cleaning a solar photosphere bright spot in an astronomical image and belongs to the fields of astronomical technique, image processing and data mining. The method comprises the steps of: firstly, identifying a bright spot by using a method that combines a Laplacian filter and morphological dilation and tracking the bright spot by using a method of three-dimensional communication; then, extracting a plurality of eigenvalues, with a low correlation. of the bright spot, and after the eigenvalue data is standardized, performing dimension reduction according to a contribution rate by using a principal component analysis method; and finally, cleaning the bright spot data subjected to dimension reduction by using a DBSCAN method so as to remove a non-bright spot structure. According to the method for cleaning the solar photosphere bright spot in the astronomical image provided by the present invention, it is unprecedented and effective to apply the DBSCAN method to cleaning the solar photosphere bright spot data, and the method largely solves the problem of error identification existing in a traditional identification method of solar photosphere bright spot. Meanwhile, more accurate bright spot data is cleaned for small-scale magnetic field researches and further researches on problems such as corona heating.

Description

technical field [0001] The invention relates to a method for cleaning solar photosphere bright spots in astronomical images, belonging to the fields of astronomical technology, image processing and data mining. Background technique [0002] The surface of the photosphere of the sun is covered with rice grain-like structures, and there are some bright structures in the dark paths of the rice grains, which are called photosphere bright spots. It is generally believed that photosphere bright spots are closely related to the solar magnetic field, and the study of photosphere bright spots can promote the study of the solar magnetic field, promote the research of solar physical phenomena such as deeper and hotter plasma and coronal heating, and thus predict the solar magnetic field activities in advance , to better predict space weather and the earth's magnetic field. [0003] At present, several methods such as threshold method, region growing method and morphology are mainly us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/23
Inventor 杨云飞张艾丽熊建萍季凯帆
Owner KUNMING UNIV OF SCI & TECH
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