Rate-distortion and complexity joint optimization for fast motion estimation in H.264 video coding
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CitationAteş, H. F., Kanberoğlu, B. & Altunbaşak, Y. (2006). Rate-distortion and complexity joint optimization for fast motion estimation in H.264 video coding. Paper presented at the 2006 International Conference on Image Processing, 37-40. doi:10.1109/ICIP.2006.313149
H.264 video coding standard offers several coding modes including inter-prediction modes that use macroblock partitions with variable block sizes. Choosing a rate-distortion optimal mode among these possibilities contributes significantly to the superior coding efficiency of the H.264 encoder. Unfortunately, searching for optimal motion vectors of each possible subblock incurs a heavy computational cost. In this paper, in order to reduce the complexity of integer-pel motion estimation, we propose a rate-distortion and complexity joint optimization method that selects for each MB a subset of partitions to evaluate during motion estimation. This selection is based on simple measures of spatio-temporal activity within the MB. The procedure is optimized to minimize mode estimation error at a certain level of computational complexity. Simulation results show that the algorithm speeds up the motion estimation module by a factor of up to 20 with little loss in coding efficiency.
Source2006 International Conference on Image Processing
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Ateş, Hasan Fehmi (IEEE, 2008)In H.264 video coding standard, there exist several inter - prediction modes that use macroblock partitions with variable block sizes. Choosing a rate-distortion optimal coding mode for each macroblock is essential for the ...
Ateş, Hasan Fehmi (IEEE, 2013-04-26)Kodçözücü tarafında süper-çözünürlük (SC) uygulayarak H.264 standardının video kodlama verimliliğinin iyileştirilmesi literatürde ele alınmıştır. Bu bildiride farklı olarak, SC¸ kestirimi kodlama sırasında H.264 standardının ...
Ateş, Hasan Fehmi (IEEE, 2013)In literature decoder-side motion estimation is shown to improve video coding efficiency of both H.264 and HEVC standards. In this paper we introduce enhanced skip and direct modes for H.264 coding using decoder-side ...