作者
Timur E Gureyev, Timothy J Davis, Andrew Pogany, Sheridan C Mayo, Stephen W Wilkins
发表日期
2004/4/20
期刊
Applied optics
卷号
43
期号
12
页码范围
2418-2430
出版商
Optica Publishing Group
简介
The first Born and Rytov approximations of scattering theory are introduced in their less familiar near-field versions. Two algorithms for phase retrieval based on these approximations are then described. It is shown theoretically and by numerical simulations that, despite the differences in their formulation, the two algorithms deliver fairly similar results when used for optical phase retrieval in the near and intermediate fields. The algorithms are applied to derive explicit solutions to four phase-retrieval problems of practical relevance to quantitative phase-contrast imaging and tomography. An example of successful phase reconstruction by use of the Born-type algorithm with an experimental x-ray image is presented.
引用总数
学术搜索中的文章
TE Gureyev, TJ Davis, A Pogany, SC Mayo, SW Wilkins - Applied optics, 2004