2026-09-19T16:56:05Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/676212022-01-13T07:54:36Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
George Barbastathis.
Lee, Justin Wu
Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Massachusetts Institute of Technology. Department of Mechanical Engineering
2011-12-09T21:34:53Z
2011-12-09T21:34:53Z
2011
2011
http://hdl.handle.net/1721.1/67621
765948950
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 89-98).
In this thesis, I perform intensity-based tomographic phase imaging in two ways. First, I utilize the paraxial transport of intensity equation (TIE) to construct phase maps of a phase object at multiple projection angles and reconstruct the object 3- dimensionally using basic tomographic principles. Then, I use an Intensity Diffraction Tomography (IDT) approach to improve the quality of reconstruction by accounting for diffraction effects under 1st order Rytov Approximation. I improve both approaches by applying compressive sensing techniques to estimate missing points in the undersampled data. Finally, I compare I-DT with single-shot, Gabor-type digital holography (also integrating use of compressive sensing principles) and discuss improvements and extensions of the presented implementation of IDT.
by Justin Wu Lee.
S.M.
98 p.
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
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permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Mechanical Engineering.
Experimental transport of intensity diffraction tomography
Experimental transport of IDT
Thesis
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