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Multi-frame super-resolution by enhanced shift & add
SnT - Universtity of Luxembourg, Luxembourg .ORCID iD: 0000-0003-2298-6774
2013 (English)In: 2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA), IEEE , 2013, 171-176 p.Conference paper, Published paper (Refereed)
Abstract [en]

A critical step in multi-frame super-resolution is the registration of frames based on their motion. We improve the performance of current state-of-the-art super-resolution techniques by proposing a more robust and accurate registration as early as in the initialization stage of the high resolution estimate. Indeed, we solve the limitations on scale and motion inherent to the classical Shift & Add approach by upsampling the low resolution frames up to the super-resolution factor prior to estimating motion or to median filtering. This is followed by an appropriate selective optimization, leading to an enhanced Shift & Add. Quantitative and qualitative evaluations have been conducted at two levels; the initial estimation and the final optimized superresolution. Results show that the proposed algorithm outperforms existing state-of-art methods.

Place, publisher, year, edition, pages
IEEE , 2013. 171-176 p.
Series
International Symposium on Image and Signal Processing and Analysis, ISPA, ISSN 1849-2266
Keyword [en]
Motion estimation, Pyramidal optical flow, Super-resolution, Upsampling
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-138997DOI: 10.1109/ISPA.2013.6703734Scopus ID: 2-s2.0-84896349058ISBN: 978-953184194-8 (print)OAI: oai:DiVA.org:kth-138997DiVA: diva2:682133
Conference
8th International Symposium on Image and Signal Processing and Analysis, ISPA 2013; Trieste; Italy; 4 September 2013 through 6 September 2013
Note

QC 20140603

Available from: 2013-12-23 Created: 2013-12-23 Last updated: 2014-06-03Bibliographically approved

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Ottersten, Björn

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf