The effect of detector sampling in wavefront-coded imaging systems

被引：12
|
作者：
Muyo, G. [1 ]
Harvey, A. R. [1 ]
机构：
[1] Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland
来源：
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2009年 / 11卷 / 05期
关键词：
wavefront coding; detector sampling; aliasing; digital image processing;
D O I：
10.1088/1464-4258/11/5/054002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a comprehensive study of the effect of detector sampling on wavefront-coded systems. Two important results are obtained: the spurious response ratios are reduced in wavefront-coded systems with a cubic phase mask and detector sampling does not compromise the restoration of wavefront-coded images with extended depth of field. Rigorous computer simulation of sampled wavefront-coded images shows an increased signal-to-aliased-noise ratio of up to 16% for a cubic phase mask with alpha = 5 lambda.
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页数：9
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