Please use this identifier to cite or link to this item: https://doi.org/10.1109/LPT.2013.2258665
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dc.titlePost-corrections of image distortions in a scanning grating-based spectral line imager
dc.contributor.authorCheo, K.K.L.
dc.contributor.authorDu, Y.
dc.contributor.authorZhou, G.
dc.contributor.authorChau, F.S.
dc.date.accessioned2014-06-17T06:31:22Z
dc.date.available2014-06-17T06:31:22Z
dc.date.issued2013
dc.identifier.citationCheo, K.K.L., Du, Y., Zhou, G., Chau, F.S. (2013). Post-corrections of image distortions in a scanning grating-based spectral line imager. IEEE Photonics Technology Letters 25 (12) : 1103-1106. ScholarBank@NUS Repository. https://doi.org/10.1109/LPT.2013.2258665
dc.identifier.issn10411135
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/61129
dc.description.abstractIn this letter, a post-correction algorithm, which is capable of compensating typical image distortions in a scanning grating-based spectral line imager, is presented in detail. A prototype spectral line imager with a single-pixel detector is built for demonstration purposes. A double-layered vibratory grating scanner and a galvano-scanning mirror are utilized in the imager for fast spatial scanning and slow spectral scanning, respectively. There are three major imager distortions exist in the prototype system, which are spatial smile distortion, spectral keystone distortion, and nonuniform sampled spatial positions due to resonant spatial scanning. They are then corrected using a post-correction algorithm, which is based on reverse ray-tracing and Delaunay Triangulation mapping. The scanning grating-based spectral imager with the post-correction algorithm has the potential to achieve low-cost, small form-factor, and high-speed operation. © 1989-2012 IEEE.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1109/LPT.2013.2258665
dc.sourceScopus
dc.subjectGrating scanner
dc.subjectlaser scanning
dc.subjectline imager
dc.subjectmicroelectromechanical system (MEMS)
dc.subjectspectral imaging
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1109/LPT.2013.2258665
dc.description.sourcetitleIEEE Photonics Technology Letters
dc.description.volume25
dc.description.issue12
dc.description.page1103-1106
dc.description.codenIPTLE
dc.identifier.isiut000319995900004
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