Fast and numerically stable algorithms for discrete cosine transforms (Q1765902)
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scientific article; zbMATH DE number 2137786
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Fast and numerically stable algorithms for discrete cosine transforms |
scientific article; zbMATH DE number 2137786 |
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Fast and numerically stable algorithms for discrete cosine transforms (English)
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23 February 2005
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The authors deal with fast cosine transform algorithms from the stability point of view. Their algorithm is based on a factorization of cosine matrices into sparse, almost orthogonal matrices. This is the due to achieve a better numerical stability than previous fast cosine transforms without orthogonal factors.
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fast discrete cosine transform
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numerical stability, factorization of DCT matrices into sparse matrices
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algorithm
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