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This paper describes a motion estimation algorithm based on sparse representation, which can be applied in video coding to reduce the temporal redundancy. The sparse coefficients are firstly calculated in support region by orthogonal matching pursuit (OMP) algorithm using the reference blocks as dictionary elements, and then these optimal sparse coefficients are utilized to predict the current block...
This paper proposes a global motion estimation (GME) method based on a compact motion model to predict the changes between the successive frames in panoramic video coding. Compared with other complex motion models, the compact motion model uses only three motion parameters to describe the translational motion and non-translational motion (i.e. zooming) accurately in GME. Experimental results show...
In H.264/AVC fractional pixel motion compensation is adopted in order to achieve more accurate motion description and higher compression efficiency. It, however, remarkably increased computation load in motion estimation (ME) process for video coder. In this paper an improved fractional pixel ME algorithm is proposed to reduce its computation load, which is based on the fact that the distribution...
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