Istituto di Scienza e Tecnologie dell'Informazione     
Lonetti F., Martelli F. Motion vector composition algorithm in H.264 transcoding. In: 14th International Conference on Systems, Signals and Image Processing (IWSSIP07) and 6th EURASIP Conference Focused on Speech and Image Processing, Multimedia Communications and Services. EC-SIPMCS 2007 (Maribor Slovenia, 27-30 giugno 2007). Proceedings, pp. 153 - 156. Z.Cucej, D.Gleich, P.Planinsic (eds.). IEEE, 2007.
In temporal transcoding, motion vector composition algorithms are used to reduce the computation time of the transcoding process. In this paper, we propose a multi-level motion vector composition scheme for H.264 transcoding, with the Bilinear Interpolation (BI) function. Simulation results show that the proposed algorithm achieves a video quality comparable with that of the motion estimation process with the advantage of greatly reducing the computation time of transcoding.
DOI: 10.1109/IWSSIP.2007.4381126
Subject H.264
Motion vector composition algorithms
Video transcoding
H.4.3 Communications Applications
I.4.2 Compression (Coding)

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