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Adaptive deformation correction of depth from defocus for object reconstruction
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Li, Ang, Tjahjadi, Tardi and Staunton, Richard C. (2014) Adaptive deformation correction of depth from defocus for object reconstruction. Journal of the Optical Society of America A: Optics, Image Science and Vision, Volume 31 (Number 12). pp. 2694-2702. doi:10.1364/JOSAA.31.002694 ISSN 1084-7529.
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WRAP_8471118-es-270115-litjahjadistaunton2014-josaa.pdf - Accepted Version - Requires a PDF viewer. Download (707Kb) | Preview |
Official URL: http://dx.doi.org/10.1364/JOSAA.31.002694
Abstract
The accuracy of three-dimensional object reconstruction using depth from defocus (DfD) can be severely reduced by elliptical lens deformation. This paper presents two correction methods, correction by deformation cancellation (CDC) and correction by least squares fit (CLSF). CDC works by subtracting the current deformed depth value by a prestored deformed value, and CLSF by mapping the deformed values to the expected values. Each method is followed by a smoothing algorithm to address the low-texture problem of DfD. Experiments using four DfD methods on real images show that the proposed methods effectively and efficiently eliminate the deformation.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software T Technology > TR Photography |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Library of Congress Subject Headings (LCSH): | Image processing -- Digital techniques, Depth of field (Photography) | ||||
Journal or Publication Title: | Journal of the Optical Society of America A: Optics, Image Science and Vision | ||||
Publisher: | Optical Society of America | ||||
ISSN: | 1084-7529 | ||||
Official Date: | 1 December 2014 | ||||
Dates: |
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Volume: | Volume 31 | ||||
Number: | Number 12 | ||||
Page Range: | pp. 2694-2702 | ||||
DOI: | 10.1364/JOSAA.31.002694 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Date of first compliant deposit: | 28 July 2016 | ||||
Date of first compliant Open Access: | 28 July 2016 | ||||
Funder: | University of Warwick |
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