抄録
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.
| 本文言語 | English |
|---|---|
| ホスト出版物のタイトル | Proceedings of the 2007 IEEE International Conference on Multimedia and Expo, ICME 2007 |
| ページ | 424-427 |
| ページ数 | 4 |
| 出版ステータス | Published - 2007 |
| イベント | IEEE International Conference onMultimedia and Expo, ICME 2007 - Beijing 継続期間: 2007 7月 2 → 2007 7月 5 |
Other
| Other | IEEE International Conference onMultimedia and Expo, ICME 2007 |
|---|---|
| City | Beijing |
| Period | 07/7/2 → 07/7/5 |
ASJC Scopus subject areas
- コンピュータ グラフィックスおよびコンピュータ支援設計
- ソフトウェア