Title of article
Tracking algorithms for low-contrast extended objects
Author/Authors
Rao، نويسنده , , Changhui and Jiang، نويسنده , , Wen-han and Ling، نويسنده , , Ning and Beckers، نويسنده , , Jacques M.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2002
Pages
10
From page
115
To page
124
Abstract
We studied the effectiveness of two algorithms, of cross-correlation coefficient and of absolute difference in the case of extended, low-contrast objects, such as solar granulation and sunspots. Wave-front overall tilt signals, acquired via post-processing of sampled solar granulation and sunspot images, are presented. Furthermore, long-exposure images of solar granulation before and after the tilt elimination are compared as regards rms contrast.
Keywords
contrast—extended object—cross-correlation coefficient— absolute difference algorithm—atmospheric coherent length
Journal title
Chinese Astronomy and Astrophysics
Serial Year
2002
Journal title
Chinese Astronomy and Astrophysics
Record number
2263194
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