Coding and decoding method and device on multi-level image
US6996278B2 · kind B2 · utility
7Cited by
3References
34Claims
0Family size
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Key dates
| Filing date | Mar 18, 2002 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | May 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/41
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A coding and decoding method includes the step of a) classifying an input multi-level image into edge parts and non-edge parts according to edge degree thereof; b) coding the input multi-level image according to a coding scheme different between the edge parts and non-edge parts; and c) decoding coded data according to a linear interpolation scheme, a cubic-function convolution scheme or an interpolation scheme having smoothing performance for generating pixel values included in the non-edge part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.