Method of motion estimation for video compression
a video compression and motion estimation technology, applied in the field of motion estimation for video compression, can solve the problems of high computational cost, fatal drawback of fs, and important importance of video compression, and achieve the effect of reducing the number of search points in algorithm computation and superior video quality
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[0017]Downhill simplex search proposed by Nelder, J. A., Mead, R. in 1965 (“A simplex method for function minimization.” The Comput. J., Vol. 7, 1965, pp. 308-313) is a derivative-free multidimensional function minimization method, and relates to a pure mathematics operation. The downhill simplex search is used for motion estimation of video compression in accordance with the present invention.
[0018]In the downhill simplex search, a collection of n+1 points in n-dimensional space is called a simplex and each point in the simplex has a specific function value. For example, in two dimensions, a simplex is a triangle. In three dimensions it is a tetrahedron. The downhill simplex search takes a series of steps to update the simplex. During these steps, the point with the highest distortion value is iteratively replaced by a new point with a smaller distortion value until the stopping criterion is satisfied. These steps consist of reflection, expansion, contraction and shrinkage operatio...
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