Survey on Block Matching Motion Estimation Algorithms and Architectures with New Results
Journal of VLSI Signal Processing Systems
An Adaptive Multi Pattern Scheme for Fast Block Motion Estimation
ICCSA '08 Proceedings of the international conference on Computational Science and Its Applications, Part II
Fast mode decision for H.264/AVC using mode prediction
ACIVS'06 Proceedings of the 8th international conference on Advanced Concepts For Intelligent Vision Systems
Fast motion estimation using spatio-temporal correlations
ICAT'06 Proceedings of the 16th international conference on Advances in Artificial Reality and Tele-Existence
Parallel fast inter mode decision for H.264/AVC encoding
Journal of Visual Communication and Image Representation
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There are several parts of the video-encoding process that can be optimized for high quality, high compression ratio, and fast encoding speed. We focus on some of these encoder optimization issues. We first study motion estimation, a computationally intensive part of encoding, and propose efficient algorithms based on exploiting spatially correlated motion information. We extend our motion estimation algorithms to find motion vectors for sub-parts of a block, as allowed for in the H.263 and MPEG-4 standards, and propose an efficient two-tier decision strategy for the one-four motion-vector decision. We introduce a new measure of block similarity that can improve the inter-intra mode decision significantly. Furthermore, for certain motion-estimation strategies, this new measure can also improve the bit rate resulting from a better motion estimation. Another issue that we address is the estimation of delta motion vectors in the H.263 and MPEG-4 standards. We have implemented these optimizations in a H.263 framework and the results are encouraging