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A fast algorithm for two-dimensional vector-radix discrete sine transform-II

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Názov:	A fast algorithm for two-dimensional vector-radix discrete sine transform-II
Autori:	Wu, Yiquan, Zhu, Zhaoda
Informácie o vydavateľovi:	Nanjing University of Aeronautics \& Astronautics, Nanjing
Predmety:	Signal theory (characterization, reconstruction, filtering, etc.), Complexity and performance of numerical algorithms, fast recursive algorithm, computational complexity, numerical stability, signal processing, Numerical methods for discrete and fast Fourier transforms, two-dimensional discrete sine transform-II
Popis:	The two-dimensional discrete sine transform (2-D DST) plays an important role in signal processing. In this paper a fast recursive algorithm for the one-dimensional discrete sine transform-II (1-D DST-II) is extended to the two-dimensional case. The approach decomposes the \((N\times N)\)- point DST-II into four \((N/2\times N/2)\)-point DST-II's. Finally, the computational complexity is analyzed. Compared with the commonly used row-column method, it is numerically stable and saves 25\% multiplication operations.
Druh dokumentu:	Article
Popis súboru:	application/xml
Prístupová URL adresa:	https://zbmath.org/613348
Prístupové číslo:	edsair.c2b0b933574d..2bdb7afd8dd4e4a7023a1b07f18bc90b
Databáza:	OpenAIRE

Popis
Abstrakt:	The two-dimensional discrete sine transform (2-D DST) plays an important role in signal processing. In this paper a fast recursive algorithm for the one-dimensional discrete sine transform-II (1-D DST-II) is extended to the two-dimensional case. The approach decomposes the \((N\times N)\)- point DST-II into four \((N/2\times N/2)\)-point DST-II's. Finally, the computational complexity is analyzed. Compared with the commonly used row-column method, it is numerically stable and saves 25\% multiplication operations.