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Compression of Unfocused Plenoptic Images using a Displacement Intra prediction
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems. (Realistic3D)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems. (Realistic3D)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems. (Realistic3D)ORCID iD: 0000-0003-3751-6089
2016 (English)In: 2016 IEEE International Conference on Multimedia and Expo Workshop, ICMEW 2016, IEEE Signal Processing Society, 2016, 7574673Conference paper, Published paper (Refereed)
Abstract [en]

Plenoptic images are one type of light field contents produced by using a combination of a conventional camera and an additional optical component in the form of microlens arrays, which are positioned in front of the image sensor surface. This camera setup can capture a sub-sampling of the light field with high spatial fidelity over a small range, and with a more coarsely sampled angle range. The earliest applications that leverage on the plenoptic image content is image refocusing, non-linear distribution of out-of-focus areas, SNR vs. resolution trade-offs, and 3D-image creation. All functionalities are provided by using post-processing methods. In this work, we evaluate a compression method that we previously proposed for a different type of plenoptic image (focused or plenoptic camera 2.0 contents) than the unfocused or plenoptic camera 1.0 that is used in this Grand Challenge. The method is an extension of the state-of-the-art video compression standard HEVC where we have brought the capability of bi-directional inter-frame prediction into the spatial prediction. The method is evaluated according to the scheme set out by the Grand Challenge, and the results show a high compression efficiency compared with JPEG, i.e., up to 6 dB improvements for the tested images.

Place, publisher, year, edition, pages
IEEE Signal Processing Society, 2016. 7574673
Keyword [en]
Light field, plenoptic, HEVC, B-coder
National Category
Media and Communication Technology
Identifiers
URN: urn:nbn:se:miun:diva-27567DOI: 10.1109/ICMEW.2016.7574673ISI: 000386808400017Scopus ID: 2-s2.0-84992129718Local ID: STCISBN: 978-1-5090-1552-8 (print)OAI: oai:DiVA.org:miun-27567DiVA: diva2:925327
Conference
2016 IEEE International Conference on Multimedia and Expo Workshop, ICMEW 2016; Seattle; United States; 11 July 2016 through 15 July 2016
Available from: 2016-05-01 Created: 2016-05-01 Last updated: 2017-08-22Bibliographically approved

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Li, YunOlsson, RogerSjöström, Mårten
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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
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  • Other locale
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Output format
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  • text
  • asciidoc
  • rtf