Backward-forward motion compensated prediction
2002 (English)In: Proceedings of ACIVS 2002 (Advanced Concepts for Intelligent Vision Systems), Ghent, Belgium, September 9-11, 2002, 2002, 260-267 p.Conference paper (Refereed)
This paper presents new methods for use of dense motion fields for motion compensation of interlaced video. The motion is estimated using previously decoded field-images. An initial motion compensated prediction is produced using the assumption that the motion is predictable in time. 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
2002. 260-267 p.
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-24519Local ID: 6651OAI: oai:DiVA.org:liu-24519DiVA: diva2:244840
ACIVS 2002, Ghent, Belgium, September 9-11, 2002