Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/88187
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dc.contributor.authorWang, Zhaominen
dc.contributor.authorQu, Weijuanen
dc.contributor.authorYang, Fangen
dc.contributor.authorWen, Yongfuen
dc.contributor.authorAnand, Asundien
dc.contributor.editorTian, Ailingen
dc.contributor.editorAsundi, Ananden
dc.contributor.editorLiu, Weiguoen
dc.contributor.editorZhang, Chunminen
dc.date.accessioned2018-12-11T06:09:13Zen
dc.date.accessioned2019-12-06T16:57:59Z-
dc.date.available2018-12-11T06:09:13Zen
dc.date.available2019-12-06T16:57:59Z-
dc.date.issued2015en
dc.identifier.citationWang, Z., Qu, W., Yang, F., Wen, Y., & Anand, A. (2015). A new autofocus method based on angular spectrum method in digital holography. Proceedings of SPIE - The International Conference on Photonics and Optical Engineering (icPOE 2014), 9449, 94492H-. doi:10.1117/12.2076853en
dc.identifier.urihttps://hdl.handle.net/10356/88187-
dc.description.abstractThe determination of numerical reconstruction distance is key to recover the wavefront at focal plane in digital holography. In this paper, we propose a new autofocus method based on angular spectrum method (ASM). The proposed method takes successive Fourier transform after 1st order spectrum selection, and then calculates the summation. It saves operations compared to classic autofocus functions. When an exhaustive z-axis search is performed, the proposed method obtains unimodality coincided with the results from four classic autofocus functions. Moreover, the proposed method is more time-effective, which is the optimal one for ASM.en
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en
dc.description.sponsorshipMOE (Min. of Education, S’pore)en
dc.format.extent7 p.en
dc.language.isoenen
dc.rights© 2015 Society of Photo-optical Instrumentation Engineers (SPIE). This paper was published in Proceedings of SPIE - The International Conference on Photonics and Optical Engineering (icPOE 2014) and is made available as an electronic reprint (preprint) with permission of Society of Photo-optical Instrumentation Engineers (SPIE). The published version is available at: [http://dx.doi.org/10.1117/12.2076853]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en
dc.subjectAngular Spectrum Methoden
dc.subjectDigital Holographyen
dc.subjectDRNTU::Engineering::Mechanical engineeringen
dc.titleA new autofocus method based on angular spectrum method in digital holographyen
dc.typeConference Paperen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen
dc.contributor.conferenceProceedings of SPIE - The International Conference on Photonics and Optical Engineering (icPOE 2014)en
dc.identifier.doi10.1117/12.2076853en
dc.description.versionPublished versionen
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