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MDCT

swMATH ID: 3503
Software Authors: J.S. Wua, d, H.Z. Shua, d, L. Senhadjib, c, d, L.M. Luo
Description: A fast algorithm for computing the two-dimensional (2-D) forward and inverse modified discrete cosine transform (MDCT and IMDCT) is proposed. The algorithm converts the 2-D MDCT and IMDCT with block size M×N into four 2-D discrete cosine transforms (DCTs) with block size (M/4)×(N/4). It is based on an algorithm recently presented by Cho et al. [An optimized algorithm for computing the modified discrete cosine transform and its inverse transform, in: Proceedings of the IEEE TENCON, vol. A, 21–24 November 2004, pp. 626–628] for the efficient calculation of one-dimensional MDCT and IMDCT. Comparison of the computational complexity with the traditional row–column method shows that the proposed algorithm reduces significantly the number of arithmetic operations.
Homepage: http://www.sciencedirect.com/science/article/pii/S0165168407004082
Keywords: 2-D MDCT; 2-D DCT; Fast algorithm; Image coding
Related Software: MDCT/MDST
Cited in: 3 Publications

Cited in 1 Serial

3 Signal Processing

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