Drizzle: A method for the linear reconstruction of undersampled images

被引：738

作者：

Fruchter, AS

Hook, RN

机构：

[1] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[2] Space Telescope European Coordinating Facil, D-85748 Garching, Germany

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2002年 / 114卷 / 792期

关键词：

D O I：

10.1086/338393

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have developed a method for the linear reconstruction of an image from undersampled, dithered data. The algorithm, known as Variable-Pixel Linear Reconstruction, or informally as "Drizzle," preserves photometry and resolution, can weight input images according to the statistical significance of each pixel, and removes the effects of geometric distortion on both image shape and photometry. This paper presents the method and its implementation. The photometric and astrometric accuracy and image fidelity of the algorithm as well as the noise characteristics of output images are discussed. In addition, we describe the use of drizzling to combine dithered images in the presence of cosmic rays.

引用

页码：144 / 152

页数：9

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