High dynamic range scanning technique

dc.contributor.author Zhang, Song
dc.contributor.author Yau, Shing-Tung
dc.contributor.department Mechanical Engineering
dc.date 2018-02-15T07:28:18.000
dc.date.accessioned 2020-06-30T06:03:12Z
dc.date.available 2020-06-30T06:03:12Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2009
dc.date.embargo 2014-11-05
dc.date.issued 2009-03-19
dc.description.abstract <p>Measuring objects with a high variation range of surface reflectivity is challenging for any optical method: This paper addresses a high dynamic range scanning technique that can measure this type of object. It takes advantage of one merit of a phase-shifting algorithm: pixel-by-pixel phase retrieval. For each measurement, a sequence of fringe images with different exposures are taken: the brightest ones have good fringe quality in the darkest areas while the darkest ones have good fringe quality in the brightest areas. They are arranged from brighter to darker (i.e., from higher exposure to lower exposure). The final fringe images, used for phase retrieval, are produced pixel-by-pixel by choosing the brightest but unsaturated corresponding pixel from one exposure. A phase-shifting algorithm is employed to compute the phase, which can be further converted to coordinates. Our experiments demonstrate that the proposed technique can successfully measure objects with high dynamic range of surface reflectivity variation.</p>
dc.description.comments <p>This article is from <em>Optical Engineering</em> 48 (2009): 1, <a href="http://dx.doi.org/10.1117/1.3099720" target="_blank">doi:10.1117/1.3099720</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/me_pubs/122/
dc.identifier.articleid 1125
dc.identifier.contextkey 6330091
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath me_pubs/122
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/54970
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/me_pubs/122/2009_Zhang_HighDynamic.pdf|||Fri Jan 14 19:15:14 UTC 2022
dc.source.uri 10.1117/1.3099720
dc.subject.disciplines Computer-Aided Engineering and Design
dc.subject.disciplines Graphics and Human Computer Interfaces
dc.subject.keywords Virtual Reality Applications Center
dc.subject.keywords Human Computer Interaction
dc.subject.keywords shiny surface
dc.subject.keywords specular surface
dc.subject.keywords three-dimensional measurement
dc.subject.keywords range scanning
dc.subject.keywords phase-shifting
dc.subject.keywords high-dynamic range
dc.subject.keywords Moire
dc.title High dynamic range scanning technique
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isOrgUnitOfPublication 6d38ab0f-8cc2-4ad3-90b1-67a60c5a6f59
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