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Fast motion estimation and Inter-mode decision for H.264/MPEG-4 AVC encoding
- Source :
- Journal of Visual Communication and Image Representation. 17:243-263
- Publication Year :
- 2006
- Publisher :
- Elsevier BV, 2006.
-
Abstract
- In H.264/MPEG-4 AVC encoding, computational complexity is the main concern for implementation and application. Motion estimation (ME) and Inter-mode decision (MD) consume a large portion of encoder computation power. ME is referred to the process to find the motion vector (MV) for a block, and MD is referred to the process to determine the best block-size for Inter-frame prediction. This paper proposes a new concept of introducing diversity into the MV search strategy. Based on the diversity concept, we introduce a new fast ME search strategy: adaptive diversity search strategy (ADSS), by combining the strength of different search strategies. We also investigate three fast ME strategies by MV merging and splitting for variable-size block motion estimation (VSBME), which explores the correlation of MVs of overlapping blocks. In addition, an Inter-mode decision is proposed by fast mode exclusion (FME). The experiment results show that the proposed fast ME can reduce the search points to about 4% of that by full search, and that the proposed FME can reduce the computation further, with negligible degradation in the rate-distortion (R-D) performance.
- Subjects :
- Theoretical computer science
Computational complexity theory
Computer science
computer.file_format
Motion vector
Quarter-pixel motion
Encoding (memory)
Motion estimation
Signal Processing
MPEG-4
Media Technology
Computer Vision and Pattern Recognition
Electrical and Electronic Engineering
Encoder
computer
Algorithm
Block (data storage)
Subjects
Details
- ISSN :
- 10473203
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Journal of Visual Communication and Image Representation
- Accession number :
- edsair.doi...........3675e8053bb3b257530863003fd17651