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In this paper, the one-dimensional (1-D) fast 8times8 inverse integer transform algorithm for Windows Media Video 9 (WMV-9/VC-1) is proposed. Based on the symmetric property of the integer transform matrix and the matrix operations, which denote the row/column permutations and the matrix decompositions, the efficient fast 1-D 8times8 inverse integer transform is developed. Therefore, the computational...
In this paper, the grouped scheme is specially applied to compute the fast Fourier transform (FFT) when the portions of transformed outputs are calculated selectively. The grouped FFT algorithm applies the scheme of the grouped frequency indices to accelerate the computation of selected DFT outputs. The advantage of the grouped FFT algorithm is that it is more cost-effective than the convenient FFT...
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