dc.contributor.author |
Van den Bergh, Frans
|
|
dc.date.accessioned |
2021-08-06T10:40:32Z |
|
dc.date.available |
2021-08-06T10:40:32Z |
|
dc.date.issued |
2018-03 |
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dc.identifier.citation |
Van den Bergh, F. 2018. Deferred slanted-edge analysis: A unified approach to Spatial Frequency Response measurement on distorted images and Colour Filter Array subsets. <i>Journal of the Optical Society of America A, 35(3).</i> http://hdl.handle.net/10204/12076 |
en_ZA |
dc.identifier.issn |
1084-7529 |
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dc.identifier.issn |
1520-8532 |
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dc.identifier.uri |
https://doi.org/10.1364/JOSAA.35.000442
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|
dc.identifier.uri |
http://hdl.handle.net/10204/12076
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|
dc.description.abstract |
The slanted-edge method of spatial frequency response (SFR) measurement is usually applied to grayscale images under the assumption that any distortion of the expected straight edge is negligible. By decoupling the edge orientation and position estimation step from the edge spread function construction step, it is shown in this paper that the slanted-edge method can be extended to allow it to be applied to images suffering from significant geometric distortion, such as produced by equiangular fisheye lenses. This same decoupling also allows the slanted-edge method to be applied directly to Bayer-mosaicked images so that the SFR of the color filter array subsets can be measured directly without the unwanted influence of demosaicking artifacts. Numerical simulation results are presented to demonstrate the efficacy of the proposed deferred slanted-edge method in relation to existing methods. |
en_US |
dc.format |
Abstract |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
https://www.osapublishing.org/josaa/abstract.cfm?uri=josaa-35-3-442 |
en_US |
dc.source |
Journal of the Optical Society of America A, 35(3) |
en_US |
dc.subject |
Colour filter array |
en_US |
dc.subject |
Deferred slanted-edge |
en_US |
dc.subject |
Spatial frequency response |
en_US |
dc.title |
Deferred slanted-edge analysis: A unified approach to Spatial Frequency Response measurement on distorted images and Colour Filter Array subsets |
en_US |
dc.type |
Article |
en_US |
dc.description.pages |
442-451 |
en_US |
dc.description.note |
© 2018 Optical Society of America. Due to copyright restrictions, the attached PDF file contains the abstract of the published item. For access to the published version, please consult the publisher's website: https://www.osapublishing.org/josaa/abstract.cfm?uri=josaa-35-3-442 |
en_US |
dc.description.cluster |
Meraka Institute |
en_US |
dc.description.impactarea |
Remote Sensing |
en_US |
dc.identifier.apacitation |
Van den Bergh, F. (2018). Deferred slanted-edge analysis: A unified approach to Spatial Frequency Response measurement on distorted images and Colour Filter Array subsets. <i>Journal of the Optical Society of America A, 35(3)</i>, http://hdl.handle.net/10204/12076 |
en_ZA |
dc.identifier.chicagocitation |
Van den Bergh, Frans "Deferred slanted-edge analysis: A unified approach to Spatial Frequency Response measurement on distorted images and Colour Filter Array subsets." <i>Journal of the Optical Society of America A, 35(3)</i> (2018) http://hdl.handle.net/10204/12076 |
en_ZA |
dc.identifier.vancouvercitation |
Van den Bergh F. Deferred slanted-edge analysis: A unified approach to Spatial Frequency Response measurement on distorted images and Colour Filter Array subsets. Journal of the Optical Society of America A, 35(3). 2018; http://hdl.handle.net/10204/12076. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Van den Bergh, Frans
AB - The slanted-edge method of spatial frequency response (SFR) measurement is usually applied to grayscale images under the assumption that any distortion of the expected straight edge is negligible. By decoupling the edge orientation and position estimation step from the edge spread function construction step, it is shown in this paper that the slanted-edge method can be extended to allow it to be applied to images suffering from significant geometric distortion, such as produced by equiangular fisheye lenses. This same decoupling also allows the slanted-edge method to be applied directly to Bayer-mosaicked images so that the SFR of the color filter array subsets can be measured directly without the unwanted influence of demosaicking artifacts. Numerical simulation results are presented to demonstrate the efficacy of the proposed deferred slanted-edge method in relation to existing methods.
DA - 2018-03
DB - ResearchSpace
DP - CSIR
J1 - Journal of the Optical Society of America A, 35(3)
KW - Colour filter array
KW - Deferred slanted-edge
KW - Spatial frequency response
LK - https://researchspace.csir.co.za
PY - 2018
SM - 1084-7529
SM - 1520-8532
T1 - Deferred slanted-edge analysis: A unified approach to Spatial Frequency Response measurement on distorted images and Colour Filter Array subsets
TI - Deferred slanted-edge analysis: A unified approach to Spatial Frequency Response measurement on distorted images and Colour Filter Array subsets
UR - http://hdl.handle.net/10204/12076
ER -
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en_ZA |
dc.identifier.worklist |
22321 |
en_US |