Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26as..133..293b&link_type=abstract
Astronomy and Astrophysics Supplement, v.133, p.293-297
Astronomy and Astrophysics
Astrophysics
6
Methods: Data Analysis, Image Processing, Stars: Objective Prism Spectra
Scientific paper
Object detection is a common problem in image processing and particularly in astronomy and astrophysics, when a huge number of objects are to be processed. Such is the case of objective prism plates, where thousands of spectra are recorded. We present a new method for automatic detection of stellar spectra on digitally-scanned objective prism plates. Our method is based on signal processing techniques with emphasis on obtaining the maximum signal-to-noise ratio from the data, as well as on applying a number of morphological criteria of one-dimensional stellar spectra images. It uses only the prism plate image without the need of the corresponding direct plate. This fully automated method gives inpressive results in the detection of stellar spectra.
Bellas-Velidis I.
Bratsolis Emmanuel
Dapergolas A.
Kontizas Evangelista
Pasian Fabio
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