Image processing method, image processing apparatus, program and recording medium that can reduce image quality degradation
US7542584B2 · kind B2 · utility
5Cited by
5References
39Claims
0Family size
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Key dates
| Filing date | Feb 18, 2005 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Jan 10, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0051
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing method includes the steps of: dividing digital content into run-lengths each including one or more consecutive pixels having an identical color; and embedding digital watermark information in the run-lengths while saving topology (first topology preservation law).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.