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- Publisher Website: 10.1109/ICCPHOT.2018.8368469
- Scopus: eid_2-s2.0-85048870368
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Conference Paper: Focal sweep imaging with multi-focal diffractive optics
Title | Focal sweep imaging with multi-focal diffractive optics |
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Authors | |
Issue Date | 2018 |
Citation | IEEE International Conference on Computational Photography, ICCP 2018, 2018, p. 1-8 How to Cite? |
Abstract | Depth-dependent defocus results in a limited depth-of-field in consumer-level cameras. Computational imaging provides alternative solutions to resolve all-in-focus images with the assistance of designed optics and algorithms. In this work, we extend the concept of focal sweep from refractive optics to diffractive optics, where we fuse multiple focal powers onto one single element. In contrast to state-of-the-art sweep models, ours can generate better-conditioned point spread function (PSF) distributions along the expected depth range with drastically shortened (40%) sweep distance. Further by encoding axially asymmetric PSFs subject to color channels, and then sharing sharp information across channels, we preserve details as well as color fidelity. We prototype two diffractive imaging systems that work in the monochromatic and RGB color domain. Experimental results indicate that the depth-of-field can be significantly extended with fewer artifacts remaining after the deconvolution. |
Persistent Identifier | http://hdl.handle.net/10722/315174 |
DC Field | Value | Language |
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dc.contributor.author | Peng, Yifan | - |
dc.contributor.author | Dun, Xiong | - |
dc.contributor.author | Sun, Qilin | - |
dc.contributor.author | Heide, Felix | - |
dc.contributor.author | Heidrich, Wolfgang | - |
dc.date.accessioned | 2022-08-05T10:17:56Z | - |
dc.date.available | 2022-08-05T10:17:56Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | IEEE International Conference on Computational Photography, ICCP 2018, 2018, p. 1-8 | - |
dc.identifier.uri | http://hdl.handle.net/10722/315174 | - |
dc.description.abstract | Depth-dependent defocus results in a limited depth-of-field in consumer-level cameras. Computational imaging provides alternative solutions to resolve all-in-focus images with the assistance of designed optics and algorithms. In this work, we extend the concept of focal sweep from refractive optics to diffractive optics, where we fuse multiple focal powers onto one single element. In contrast to state-of-the-art sweep models, ours can generate better-conditioned point spread function (PSF) distributions along the expected depth range with drastically shortened (40%) sweep distance. Further by encoding axially asymmetric PSFs subject to color channels, and then sharing sharp information across channels, we preserve details as well as color fidelity. We prototype two diffractive imaging systems that work in the monochromatic and RGB color domain. Experimental results indicate that the depth-of-field can be significantly extended with fewer artifacts remaining after the deconvolution. | - |
dc.language | eng | - |
dc.relation.ispartof | IEEE International Conference on Computational Photography, ICCP 2018 | - |
dc.title | Focal sweep imaging with multi-focal diffractive optics | - |
dc.type | Conference_Paper | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/ICCPHOT.2018.8368469 | - |
dc.identifier.scopus | eid_2-s2.0-85048870368 | - |
dc.identifier.spage | 1 | - |
dc.identifier.epage | 8 | - |