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Depth-of-Field Extension Method Using Variable Annular Pupil Division

Title
Depth-of-Field Extension Method Using Variable Annular Pupil Division
Authors
Hong, D[Hong, Deokhwa]Cho, H[Cho, Hyungsuck]
DGIST Authors
Cho, H[Cho, Hyungsuck]
Issue Date
2012-04
Citation
IEEE/ASME Transactions on Mechatronics, 17(2), 390-396
Type
Article
Article Type
Article
Keywords
Annular PupilDefocusDepth of FieldImage EnhancementImaging SystemsIncoming LightLarge ApertureLight ModulatorsOptical Image StorageOptical ImagingOptical Imaging SystemOptical ResolutionPupil FunctionSize and ShapeSpatial Light Modulators
ISSN
1083-4435
Abstract
The depth-of-field (DOF) of an imaging system is closely related to the pupil function that describes the characteristics of the pupil such as size and shape. Shallow DOF is especially problematic in microscopic optical imaging systems because they have relatively large aperture size for high optical resolution. In this paper, a new DOF extension method is proposed. This is to acquire an image by integrating the incoming light while changing the size of annular pupil. By dividing the pupil into annular form, the effect of the defocus aberration is reduced. Theoretical background is explained and simulation and experimental results are shown for verification. The results show that the DOF can effectively be extended by this method. © 2006 IEEE.
URI
http://hdl.handle.net/20.500.11750/3379
DOI
10.1109/TMECH.2011.2106508
Publisher
Institute of Electrical and Electronics Engineers Inc.
Files:
There are no files associated with this item.
Collection:
Robotics EngineeringETC1. Journal Articles


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