A motion vector prediction scheme for MPEG-2 to H.264 transcoding based on smoothness of motion vector field

Xiang Hui Wei, Shen Li, Satoshi Goto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In MPEG-2 to H.264 transcoding, MPEG-2 motion vector (MV) is often reused as search center to simplify H.264 motion estimation (ME) module. In this paper, we show that motion vector predictor (MVP) from neighboring sub-blocks is more accurate than MPEG-2 MV as search center when MPEG-2 MV field is non-smooth. A criterion based on relative motion is proposed to evaluate smoothness of MPEG-2 MV field. And a hardware oriented MV prediction scheme is also proposed. Experiment results show that the proposed MV prediction scheme with a relative small search range can approach the performance of full search algorithm. Comparing with the method only utilizing MPEG-2 MV, the proposed approach can achieve significant improvement on accuracy of motion prediction, especially in sequences with fast motion and complicate background.

Original languageEnglish
Title of host publicationProceedings of the 2007 IEEE International Conference on Multimedia and Expo, ICME 2007
Pages424-427
Number of pages4
Publication statusPublished - 2007
EventIEEE International Conference onMultimedia and Expo, ICME 2007 - Beijing
Duration: 2007 Jul 22007 Jul 5

Other

OtherIEEE International Conference onMultimedia and Expo, ICME 2007
CityBeijing
Period07/7/207/7/5

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ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Software

Cite this

Wei, X. H., Li, S., & Goto, S. (2007). A motion vector prediction scheme for MPEG-2 to H.264 transcoding based on smoothness of motion vector field. In Proceedings of the 2007 IEEE International Conference on Multimedia and Expo, ICME 2007 (pp. 424-427). [4284677]