CASIA OpenIR  > 09年以前成果
A new automatic quasars recognition technique based on PCA and Hough transform
Huang, LY; Hu, ZY
Source PublicationSPECTROSCOPY AND SPECTRAL ANALYSIS
2003-02-01
Volume23Issue:1Pages:187-191
SubtypeArticle
AbstractThe 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%.
KeywordQuasar Redshift Principal Component Analysis (Pca) Standard Hough Transform (Sht)
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS Research AreaSpectroscopy
WOS SubjectSpectroscopy
WOS IDWOS:000181586700052
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/9902
Collection09年以前成果
AffiliationChinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100080, Peoples R China
Recommended Citation
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Huang, LY]'s Articles
[Hu, ZY]'s Articles
Baidu academic
Similar articles in Baidu academic
[Huang, LY]'s Articles
[Hu, ZY]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Huang, LY]'s Articles
[Hu, ZY]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.