On the computation of two-dimensional DCT

@article{Bi2000OnTC,
  title={On the computation of two-dimensional DCT},
  author={Guoan Bi and Gang Li and Kai-Kuang Ma and Teng Chork Tan},
  journal={IEEE Trans. Signal Processing},
  year={2000},
  volume={48},
  pages={1171-1183}
}
A new fast algorithm for the type-II two-dimensional (2-D) discrete cosine transform (DCT) is presented. It shows that the 2-D DCT can be decomposed into cosine–cosine, cosine–sine, sine–cosine, and sine–sine sequences that can be further decomposed into a number of similar sequences. Compared with other reported algorithms, the proposed one achieves savings on the number of arithmetic operations and has a recursive computational structure that leads to a simplification of the input/output… CONTINUE READING

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