Apparatus and method for watermarking using elemental images of integrated image having three-dimensional information
US7936899B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2007 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Mar 1, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3236
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for watermarking that uses elemental images of an integrated image having three-dimensional information as a watermark are disclosed. The watermarking apparatus in accordance with an embodiment of the present invention includes i) a computational pickup unit, which picks up an elemental image watermark computationally by placing an object three-dimensionally, ii) an embedding process unit, which embeds into a two-dimensional image the elemental image watermark obtained by the computational pickup unit, iii) an extraction process unit, which extracts the elemental image watermark by receiving through a transmission channel the watermarked two-dimensional image embedded by the embedding process unit, and iv) a computational reconstruction unit, which computationally reconstructs the elemental image watermark extracted by the extraction process unit to a distance-based image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.