- Research Article
- Open Access
A Fast Mellin and Scale Transform
EURASIP Journal on Advances in Signal Processingvolume 2007, Article number: 089170 (2007)
A fast algorithm for the discrete-scale (and-Mellin) transform is proposed. It performs a discrete-time discrete-scale approximation of the continuous-time transform, with subquadratic asymptotic complexity. The algorithm is based on a well-known relation between the Mellin and Fourier transforms, and it is practical and accurate. The paper gives some theoretical background on the Mellin,-Mellin, and scale transforms. Then the algorithm is presented and analyzed in terms of computational complexity and precision. The effects of different interpolation procedures used in the algorithm are discussed.
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