Abstract
We present an adaptive quarter-pel (Qpel) motion estimation (ME) method for H.264/AVC. Instead of applying Qpel ME to all macroblocks (MBs), the proposed method selectively performs Qpel ME in an MB level. In order to reduce the bit rate, we also propose a motion vector (MV) encoding technique that adaptively selects a different variable length coding (VLC) table according to the accuracy of the MV. Experimental results show that the proposed method can achieve about 3% average bit rate reduction.
Original language | English |
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Article number | 110502 |
Journal | Optical Engineering |
Volume | 48 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2009 |
Bibliographical note
Funding Information:This research was supported by Seoul Future Contents Convergence (SFCC) Cluster established by Seoul R&BD Program. This work was also supported by a Korea Science and Engineering Foundation (KOSEF) Grant funded by the Korean Government (MEST) (No. 2009-0080547).
Keywords
- linear classification
- motion estimation
- motion vector coding
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- General Engineering