Shift and/or merge of transformed data along one axis
US6671414B1 · kind B1 · utility
8Cited by
6References
23Claims
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Key dates
| Filing date | Mar 13, 2000 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Mar 13, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of transform domain processing of transformed data is applied to image processing in various applications. A one-dimensional algorithm allows for the selection of an arbitrary contiguous eight component DCT sub-block from two adjacent DCT blocks that foregoes the expense of image manipulation in the real domain. Due to the fact that non-zero DCT coefficients are generally sparse, this algorithm lends itself nicely to the development of special cases which are faster than methods in use today. The de-quantization and re-quantization can be combined at execution time with the constants.
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