Automated removal of stripe interference in full-disk solar images
Autor: | Gang-Hua Lin, Sheng Zheng, Shuan He, Yao Huang, Hui-Ling He |
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Rok vydání: | 2016 |
Předmět: |
Physics
Solar image business.industry Resolution (electron density) 0211 other engineering and technologies Astronomy and Astrophysics 02 engineering and technology 01 natural sciences Image (mathematics) Support vector machine Optics Quality (physics) Interference (communication) Space and Planetary Science Computer Science::Computer Vision and Pattern Recognition 0103 physical sciences Astrophysics::Earth and Planetary Astrophysics business 010303 astronomy & astrophysics 021101 geological & geomatics engineering |
Zdroj: | Research in Astronomy and Astrophysics. 16:002 |
ISSN: | 1674-4527 |
Popis: | The quality of full-disk solar Hα images is significantly degraded by stripe interference. In this paper, to improve the analysis of morphological evolution, a robust solution for stripe interference removal in a partial full-disk solar Hα image is proposed. The full-disk solar image is decomposed into a set of support value images on different scales by convolving the image with a sequence of multiscale support value filters, which are calculated from the mapped least-squares support vector machines (LS-SVMs). To match the resolution of the support value images, a scale-adaptive LS-SVM regression model is used to remove stripe interference from the support value images. We have demonstrated the advantages of our method on solar Hα images taken in 2001–2002 at the Huairou Solar Observing Station. Our experimental results show that our method can remove the stripe interference well in solar Hα images and the restored image can be used in morphology researches. |
Databáze: | OpenAIRE |
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