Adaptive synthetic Schlieren imaging

Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009. === "June 2009." Vita. Cataloged from PDF version of thesis. === Includes bibliographical references (p. 20). === Traditional schlieren photography has several important disadvantages when designin...

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Main Author: La Foy, Roderick R
Other Authors: Alexandra Techet.
Format: Others
Language:English
Published: Massachusetts Institute of Technology 2010
Subjects:
Online Access:http://hdl.handle.net/1721.1/54508
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spelling ndltd-MIT-oai-dspace.mit.edu-1721.1-545082019-05-02T16:14:52Z Adaptive synthetic Schlieren imaging La Foy, Roderick R Alexandra Techet. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Mechanical Engineering. Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009. "June 2009." Vita. Cataloged from PDF version of thesis. Includes bibliographical references (p. 20). Traditional schlieren photography has several important disadvantages when designing a system to image refractive index gradients including the relatively high cost of parabolic mirrors and the fact that the technique does not easily yield quantitative data. Both these issues are resolved by using synthetic Schileren photography, but this technique produces images with a lower resolution than traditional schlieren imaging. Synthetic schlieren imaging measures a refractive index gradient by comparing the distortion of two or more images with high frequency backgrounds. This method can either yield low-resolution quantitative data in two dimensions or high-resolution quantitative data in one dimension, but cannot give high-resolution data in two dimensions simultaneously. In order to yield high resolution imaging in two dimensions, a technique is described that based upon previously measured fields, adaptively modifies the high resolution background in order to maximize the resolution for a given flow field. by Roderick R. La Foy. S.B. 2010-04-28T15:44:01Z 2010-04-28T15:44:01Z 2009 Thesis http://hdl.handle.net/1721.1/54508 558840915 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 30 p. application/pdf Massachusetts Institute of Technology
collection NDLTD
language English
format Others
sources NDLTD
topic Mechanical Engineering.
spellingShingle Mechanical Engineering.
La Foy, Roderick R
Adaptive synthetic Schlieren imaging
description Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009. === "June 2009." Vita. Cataloged from PDF version of thesis. === Includes bibliographical references (p. 20). === Traditional schlieren photography has several important disadvantages when designing a system to image refractive index gradients including the relatively high cost of parabolic mirrors and the fact that the technique does not easily yield quantitative data. Both these issues are resolved by using synthetic Schileren photography, but this technique produces images with a lower resolution than traditional schlieren imaging. Synthetic schlieren imaging measures a refractive index gradient by comparing the distortion of two or more images with high frequency backgrounds. This method can either yield low-resolution quantitative data in two dimensions or high-resolution quantitative data in one dimension, but cannot give high-resolution data in two dimensions simultaneously. In order to yield high resolution imaging in two dimensions, a technique is described that based upon previously measured fields, adaptively modifies the high resolution background in order to maximize the resolution for a given flow field. === by Roderick R. La Foy. === S.B.
author2 Alexandra Techet.
author_facet Alexandra Techet.
La Foy, Roderick R
author La Foy, Roderick R
author_sort La Foy, Roderick R
title Adaptive synthetic Schlieren imaging
title_short Adaptive synthetic Schlieren imaging
title_full Adaptive synthetic Schlieren imaging
title_fullStr Adaptive synthetic Schlieren imaging
title_full_unstemmed Adaptive synthetic Schlieren imaging
title_sort adaptive synthetic schlieren imaging
publisher Massachusetts Institute of Technology
publishDate 2010
url http://hdl.handle.net/1721.1/54508
work_keys_str_mv AT lafoyroderickr adaptivesyntheticschlierenimaging
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