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Motion compensation using backward prediction and prediction refinement
Linköping University, The Institute of Technology. Linköping University, Department of Biomedical Engineering, Medical Informatics.
Linköping University, The Institute of Technology. Linköping University, Department of Biomedical Engineering, Medical Informatics. Linköping University, Center for Medical Image Science and Visualization, CMIV.
ISY LiTH.
Linköping University, Department of Electrical Engineering.
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2003 (English)In: Signal Processing: Image Communication, ISSN 0923-5965, Vol. 18, no 5, 381-400 p.Article in journal (Refereed) Published
Abstract [en]

This paper presents new methods for use of dense motion fields for motion compensation of interlaced video. The motion estimation is based on previously decoded field-images. The motion is then temporally predicted and used for motion compensated prediction of the field-image to be coded. The motion estimation algorithm is phase-based and uses two or three field-images to achieve motion estimates with sub-pixel accuracy. To handle non-constant motion and the specific characteristics of the field-image to be coded, the initially predicted image is refined using forward motion compensation, based on block-matching. Tests show that this approach achieves higher PSNR than forward block-based motion estimation, when coding the residual with the same coder. The subjective performance is also better.

Place, publisher, year, edition, pages
2003. Vol. 18, no 5, 381-400 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-24495DOI: 10.1016/S0923-5965(03)00012-2Local ID: 6619OAI: oai:DiVA.org:liu-24495DiVA: diva2:244816
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2013-08-28

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Andersson, KennethAndersson, MatsForchheimer, RobertKnutsson, Hans

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The Institute of TechnologyMedical InformaticsCenter for Medical Image Science and Visualization, CMIVDepartment of Electrical Engineering
Medical and Health Sciences

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