A refined fast 2-D discrete cosine transform algorithm

Authors:
Yuh-Ming Huang;Ja-Ling Wu
Affiliations:
Dept. of Comput. Sci. & Inf. Eng., Nat. Taiwan Univ., Taipei;-
Venue:
IEEE Transactions on Signal Processing
Year:
1999

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Abstract

An index permutation-based fast two-dimensional discrete cosine transform (2-D DCT) algorithm is presented. It is shown that the N×N 2-D DCT, where N=2m, can be computed using only N 1-D DCTs and some post additions