Method for the transformation of images signals on arbitrarily- shaped segments
US6427028B1 · kind B1 · utility
10Cited by
10References
20Claims
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Key dates
| Filing date | Aug 8, 1997 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Aug 8, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A linear transformation of the image signal on a segment with an arbitrary geometrical shape includes the following steps: the sub-division of the segment into sub-segments of regular shapes (rectangular, square or linear shapes), the application of an orthogonal linear transformation to each sub-segment, the combining of the coefficients coming from the first transformation into classes of coefficients according to a predetermined criterion, and the iteration of the transformation on the classes of coefficients, and which can be applied to the processing of images for encoding.
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