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题名: How to co-add images? I. A new iterative method for image reconstruction of dithered observations
作者: Wang, Lei; Li, Guo-Liang
刊名: RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期: 2017
卷号: 17, 期号:10, 页码:100
DOI: 10.1088/1674-4527/17/10/100
英文摘要: By employing the previous Voronoi approach and replacing its nearest neighbor approximation with Drizzle in iterative signal extraction, we develop a fast iterative Drizzle algorithm, named fiDrizzle, to reconstruct the underlying band-limited image from undersampled dithered frames. Compared with the existing iDrizzle, the new algorithm improves rate of convergence and accelerates the computational speed. Moreover, under the same conditions (e.g. the same number of dithers and iterations), fiDrizzle can make a better quality reconstruction than iDrizzle, due to the newly discovered High Sampling caused Decelerating Convergence (HSDC) effect in the iterative signal extraction process. fiDrizzle demonstrates its powerful ability to perform image deconvolution from undersampled dithers.
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/17909
Appears in Collections:期刊(老文献)_期刊论文

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