Systems for spectral multiplexing of source images to provide a composite image with gray component replacement, for rendering the composite image, and for spectral demultiplexing of the composite image
US7215792B2 · kind B2 · utility
17Cited by
19References
24Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 9, 2002 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Oct 31, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4446
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for spectrally-encoding plural source images and for providing the spectrally-encoded plural source images in a composite image, for rendering the composite image in a physical form, or for recovering at least one of the encoded source images from the rendered composite image such that the recovered source image is made distinguishable. Source image confusion in a rendered composite image is controlled by application of a multi-illuminant gray component replacement (GCR) technique to the darkness common to the different colorants under the multiple illuminants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.