Generating sinusoidal fringe by defocusing: potentials for unprecedentedly high-speed 3-D shape measurement using a DLP projector

dc.contributor.author Li, Ji
dc.contributor.author Zhang, Song
dc.contributor.department Mechanical Engineering
dc.date 2019-07-18T06:23:42.000
dc.date.accessioned 2020-06-30T06:02:49Z
dc.date.available 2020-06-30T06:02:49Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2010
dc.date.embargo 2014-11-07
dc.date.issued 2010-08-01
dc.description.abstract <p>This paper presents a technique that reaches 3-D shape measurement speed beyond the digital-light-processing (DLP) projector's projection speed. For this technique, a "solid-state" binary structured pattern is generated with each micromirror pixel always being at one status (ON or OFF). By this means, any time segment of projection can represent the whole signal, thus the exposure time can be shorter than the projection time. A sinusoidal fringe pattern is generated by properly defocusing a binary one, and the Fourier method can be adopted for 3-D shape measurement. We have successfully reached 2000 Hz 3-D shape measurement speed with good measurement quality. Because the fringe pattern is generated digitally, this proposed technique provides an alternative flexible approach for high-speed applications.</p>
dc.description.comments <p>This is a conference proceeding from <em>Interferometry XV: Techniques and Analysis </em>7790 (2010): 1, <a href="http://dx.doi.org/10.1117/12.860179" target="_blank">doi:10.1117/12.860179</a>. Posted with permission.</p> <p>Copyright 2010 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.</p>
dc.identifier archive/lib.dr.iastate.edu/me_conf/78/
dc.identifier.articleid 1075
dc.identifier.contextkey 6337438
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath me_conf/78
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/54920
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/me_conf/78/2010_Zhang_GeneratingSinusoidal.pdf|||Sat Jan 15 01:53:58 UTC 2022
dc.source.uri 10.1117/12.860179
dc.subject.disciplines Computer-Aided Engineering and Design
dc.subject.disciplines Graphics and Human Computer Interfaces
dc.subject.keywords High speed
dc.subject.keywords three dimensional
dc.subject.keywords fringe analysis
dc.subject.keywords defocusing
dc.subject.keywords grating
dc.title Generating sinusoidal fringe by defocusing: potentials for unprecedentedly high-speed 3-D shape measurement using a DLP projector
dc.type article
dc.type.genre conference
dspace.entity.type Publication
relation.isOrgUnitOfPublication 6d38ab0f-8cc2-4ad3-90b1-67a60c5a6f59
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