An approach to fast transform coding in software
Techniques for fast image transform coding on 32-bit processors are described. The Reparameterized Suehiro Transform is used to avoid multiplication; then two 16-bit arithmetic computations are accomplished simultaneously with ‘paired arithmetic’. This reduces the effective cost of the 8-point DCT-I...
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Published in | Signal processing. Image communication Vol. 8; no. 1; pp. 3 - 11 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
1996
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Subjects | |
Online Access | Get full text |
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Summary: | Techniques for fast image transform coding on 32-bit processors are described. The Reparameterized Suehiro Transform is used to avoid multiplication; then two 16-bit arithmetic computations are accomplished simultaneously with ‘paired arithmetic’. This reduces the effective cost of the 8-point DCT-III to about 11 additions, 9 subtractions and 15 shifts. With these techniques the Sun Sparcstation can perform JPEG compression and decompression at rates of 45 and 80 million pixels per minute respectively. |
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ISSN: | 0923-5965 1879-2677 |
DOI: | 10.1016/0923-5965(94)00047-6 |