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Astronomical spectral lines auto-extraction based on framelet transform

  • Haihui Wang*
  • , Shuang Li
  • , A. Li Luo
  • *此作品的通讯作者
  • Beihang University
  • CAS - National Astronomical Observatories

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The important astrophysical information is hidden in spectral lines of astronomical spectra. This paper presents a method in detail extraction of spectral lines and splitting. The method consists of four main steps: First, fitting the continuum of the observed spectra by a combined method of framelet transform and spline fitting. After removing the continuum, the spectral signal is transformed by framelet with 4 (th) scale. Then, estimate the noise with high frequency coefficients; the noise with coefficients of the 4 (th) scale is eliminated by soft thresholding. At last, extract the spectral lines. Experimental results show that the algorithm can improve the fitting accuracy and extract spectral lines effectively.

源语言英语
主期刊名Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
1045-1048
页数4
DOI
出版状态已出版 - 2010
活动2010 3rd International Congress on Image and Signal Processing, CISP 2010 - Yantai, 中国
期限: 16 10月 201018 10月 2010

出版系列

姓名Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
3

会议

会议2010 3rd International Congress on Image and Signal Processing, CISP 2010
国家/地区中国
Yantai
时期16/10/1018/10/10

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