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Motion-Adaptive Transforms based on Vertex-Weighted Graphs
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0003-0381-3085
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0002-7807-5681
2013 (English)In: 2013 Data Compression Conference (DCC), IEEE Computer Society, 2013, 181-190 p.Conference paper, Published paper (Refereed)
Abstract [en]

Motion information in image sequences connects pixels that are highly correlated. In this paper, we consider vertex-weighted graphs that are formed by motion vector information. The vertex weights are defined by scale factors which are introduced to improve the energy compaction of motion-adaptive transforms. Further, we relate the vertex-weighted graph to a subspace constraint of the transform. Finally, we propose a subspace-constrained transform (SCT) that achieves optimal energy compaction for the given constraint. The subspace constraint is derived from the underlying motion information only and requires no additional information. Experimental results on energy compaction confirm that the motion-adaptive SCT outperforms motion-compensated orthogonal transforms while approaching the theoretical performance of the Karhunen Loeve Transform (KLT) along given motion trajectories.

Place, publisher, year, edition, pages
IEEE Computer Society, 2013. 181-190 p.
Series
Data Compression Conference. Proceedings, ISSN 1068-0314
Keyword [en]
subspace-constrained transform, vertex-weighted graph, motion-adaptive transform
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-113204DOI: 10.1109/DCC.2013.23ISI: 000325712000019Scopus ID: 2-s2.0-84881072015ISBN: 978-1-4673-6037-1 (print)OAI: oai:DiVA.org:kth-113204DiVA: diva2:605155
Conference
Data Compression Conference, DCC 2013; Snowbird, UT; United States; 20 March 2013 through 22 March 2013
Note

QC 20131114

Available from: 2013-02-13 Created: 2013-01-14 Last updated: 2013-11-14Bibliographically approved

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Flierl, Markus

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CiteExportLink to record
Permanent link

Direct link
Cite
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