1991•Electronics LettersRequires access

Relationship between two algorithms for discrete cosine transform

Wang Zhongde, G.A. Jullien

Abstract

Two contributions are made to the implementation of fast discrete cosine transform algorithms. The first uses Hadamard ordering to improve the regularity of the Lee fast cosine transform (FCT) algorithm for the discrete cosine transform (DCT). The second derives a close relationship between the Lee FCT and the recursive algorithm for the DCT.

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Key concepts: Discrete cosine transform, Modified discrete cosine transform, Discrete sine transform, Lapped transform, Hadamard transform, Algorithm, Discrete Hartley transform, Transform coding