Lu Jie, Wang Xincheng, Zhu Weile. A NEW FAST ALGORITHM OF 2-D DISCRETE COSINE TRANSFORM[J]. Journal of Electronics & Information Technology, 1994, 16(6): 576-581.
Citation:
Lu Jie, Wang Xincheng, Zhu Weile. A NEW FAST ALGORITHM OF 2-D DISCRETE COSINE TRANSFORM[J]. Journal of Electronics & Information Technology, 1994, 16(6): 576-581.
Lu Jie, Wang Xincheng, Zhu Weile. A NEW FAST ALGORITHM OF 2-D DISCRETE COSINE TRANSFORM[J]. Journal of Electronics & Information Technology, 1994, 16(6): 576-581.
Citation:
Lu Jie, Wang Xincheng, Zhu Weile. A NEW FAST ALGORITHM OF 2-D DISCRETE COSINE TRANSFORM[J]. Journal of Electronics & Information Technology, 1994, 16(6): 576-581.
A new algorithm for the fast computation of a 2-D discrete cosine transform (DCT) is presented. It is shown that the N X N DCT, where N = 2m, can be computed using only N 1-D DCT's and additions, instead of using 2N 1-D DCT's, as in the conventional row-column approach. Hence the total number of multiplications for the proposed algorithm is only half of that required for the row-column approach, and is also less than that of most of other fast algorithms, while the number of additions is almost comparable to that of others.
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