A new automatic quasars recognition technique based on PCA and Hough transform
文献类型：期刊论文
| 作者 | Huang, LY; Hu, ZY
|
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2003-02-01 |
| 卷号 | 23期号:1页码:187-191 |
| 关键词 | quasar redshift principal component analysis (PCA) standard Hough transform (SHT) |
| 英文摘要 | The main purpose of quasar recognition is to determine the observed quasar spectrum's redshift value. Previously the template of quasar rest frame in the literature was basically constructed based on astronomers' hypotheses, Due to the inaccuracy of such a template, it is hard to determine the redshift value by matching the observed quasar spectrum with the template directly. This paper's main contributions are two-fold: Firstly, the template in our paper is constructed by the principal component analysis (PCA) method from some selected spectra with known redshift values, hence the obtained template is more realistic. Secondly, a 2D standard Hough transform, rather than a 1D Hough transform, is used. This is because although only redshift needs to be determined in our system, based on our observations, the magnitude of emission peak is also changed, hence a new parameter, namely scale parameter, is also introduced to the Hough transform to enhance the reliability of the recognition. The experiments show that the proposed technique is workable and the correct recognition rate can reach about as high as 90%. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Spectroscopy |
| 研究领域[WOS] | Spectroscopy |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000181586700052 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/9902]  |
| 专题 | 自动化研究所_09年以前成果 |
| 作者单位 | Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, LY,Hu, ZY. A new automatic quasars recognition technique based on PCA and Hough transform[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2003,23(1):187-191. |
| APA | Huang, LY,&Hu, ZY.(2003).A new automatic quasars recognition technique based on PCA and Hough transform.SPECTROSCOPY AND SPECTRAL ANALYSIS,23(1),187-191. |
| MLA | Huang, LY,et al."A new automatic quasars recognition technique based on PCA and Hough transform".SPECTROSCOPY AND SPECTRAL ANALYSIS 23.1(2003):187-191. |
入库方式： OAI收割
来源：自动化研究所
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