In hardware design of MPEG-2 to H.264 transcoder, MPEG-2 motion vector (MV) is often reused as search center to reduce the search range for H.264 motion estimation (ME) module. But MPEG-2 MV is not always accuratesearch center. The common-used comparison algorithm for motion vector predictor (MVP) is hardly implemented in hardware. In this paper, we propose a MV prediction algorithm for hardware design based on smoothness of MPEG-2 MV field. Experiment results show that the proposed MV prediction method with a small search range can approach the performance of full search algorithm with a large search range. Using the proposed algorithm, the motion prediction accuracy is significantly improved compared with the method only usingMPEG-2MV, especially in sequence with fast motion and complicate background.
A Hardware-Oriented High Precision Motion Vector Prediction Scheme for MPEG-2 to H.264 Transcoding
2008 Congress on Image and Signal Processing ; 1 ; 278-282
01.05.2008
274643 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Robust Data Hiding in MPEG-2 Video Against Transcoding
British Library Conference Proceedings | 2003
|Robust data hiding in MPEG-2 video against transcoding
IEEE | 2003
|British Library Conference Proceedings | 2005
|Neural Network Based Motion Vector Computation and Application to MPEG Coding
British Library Conference Proceedings | 1994
|