Invertible integer DCT algorithms (Q1406574)
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scientific article; zbMATH DE number 1975008
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Invertible integer DCT algorithms |
scientific article; zbMATH DE number 1975008 |
Statements
Invertible integer DCT algorithms (English)
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4 September 2003
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The paper presents two new algorithms for the integer DCT-II (discrete cosine transform) and integer DCT-IV of radix-2 length. Then it estimates the worst case error between the resulting vectors of the exact DCT and the corresponding integer DCT. Some numerical experiments for the integer DCT-II of length 8 and for the 2-dimensional integer DCT-II of size \(8\times 8\) are also presented.
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discrete cosine transform
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loseless coding
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data compression
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factorization of cosine matrix
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lifting matrix
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rounding-off
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integer DCT
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invertible integer DCT
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worst case error
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error estimate
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numerical experiments
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