Light field applications to 3-dimensional surface imaging
Name
565990736-MIT.pdf
Description
Full printable version
Size
13.12 MB
Format
Adobe PDF
Checksum (MD5)
801c8ce39aec46abb1734a7a2ca31b1c
Author(s)
Hong, Wenxian
Advisor(s)
Douglas P. Hart.
Alternative Title
Light field applications to three-dimensional surface imaging
Date Issued
2009
Publisher
Massachusetts Institute of Technology
Abstract
The structure of light around a scene may be contained in a 4-dimensional array known as a light field. This thesis describes methods for acquiring and manipulating light fields for applications in 3-dimensional imaging. By actively sampling parts of the wavefront impinging on a lens, or using microlens arrays and patterned sinusoidal masks to modulate the rays reaching a camera, both the spatial distribution and directionality of light may be captured to produce light fields. Simple depth estimation algorithms using stereo and focus measures are then applied to recover quantitative depth information. Experiments on real-world light fields demonstrate their utility in performing digital refocusing, reconstructing occluded objects as well as accurately estimating depth and shape. The performance of the algorithms developed are discussed theoretically and compared empirically.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 65-66).
Subjects
Mechanical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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