Synthetic Apertures for Visible Imaging Using Fourier Ptychography

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dc.contributor.advisorVeeraraghavan, Ashok Nen_US
dc.creatorHolloway, Jasonen_US
dc.date.accessioned2017-07-31T18:57:35Zen_US
dc.date.available2017-07-31T18:57:35Zen_US
dc.date.created2016-12en_US
dc.date.issued2016-09-20en_US
dc.date.submittedDecember 2016en_US
dc.date.updated2017-07-31T18:57:35Zen_US
dc.description.abstractIn long-range imaging, spatial resolution is predominantly limited by diffraction blur. Diffraction blur is a fundamental limit that is determined by the diameter of the lens used in the imaging system. In principle, the diameter of a lens can be increased to circumvent diffraction. In reality, cost and manufacturing limitations place a limit on the maximum diameter that can be achieved. Therefore, computational methods are required to super-resolve the observed, blurry image and recover spatial resolution lost to diffraction. Macroscopic Fourier ptychography is proposed as a practical means to create a synthetic aperture for visible imaging to achieve sub-diffraction limit spatial resolution. In this thesis, two principle barriers to implementing Fourier ptychography are addressed and resolved. First, a prototype imaging system is introduced to recover high-resolution long distance images in a reflection imaging geometry. Second, an image space regularization technique is developed to reconstruct optically rough surfaces that exhibit speckle. Experimental results demonstrate, for the first time, a macroscopic Fourier ptychography imaging system to achieve sub-diffraction resolution of optically rough objects in a reflection geometry. Spatial resolution is increased six-fold over any single captured image.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationHolloway, Jason. "Synthetic Apertures for Visible Imaging Using Fourier Ptychography." (2016) Diss., Rice University. <a href="https://hdl.handle.net/1911/95651">https://hdl.handle.net/1911/95651</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/95651en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectFourier ptychographyen_US
dc.subjectsynthetic apertureen_US
dc.subjectsynthetic apertures for visible imagingen_US
dc.subjectSAVIen_US
dc.titleSynthetic Apertures for Visible Imaging Using Fourier Ptychographyen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentElectrical and Computer Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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