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Motion compensation using backward prediction and prediction refinement
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för medicinsk teknik, Medicinsk informatik.
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för medicinsk teknik, Medicinsk informatik. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV.
ISY LiTH.
Linköpings universitet, Institutionen för systemteknik.
Vise andre og tillknytning
2003 (engelsk)Inngår i: Signal Processing: Image Communication, ISSN 0923-5965, Vol. 18, nr 5, s. 381-400Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2003. Vol. 18, nr 5, s. 381-400
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-24495DOI: 10.1016/S0923-5965(03)00012-2Lokal ID: 6619OAI: oai:DiVA.org:liu-24495DiVA, id: diva2:244816
Tilgjengelig fra: 2009-10-07 Laget: 2009-10-07 Sist oppdatert: 2013-08-28

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Andersson, KennethAndersson, MatsForchheimer, RobertKnutsson, Hans

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