Content-adaptive parallax barriers for automultiscopic display
US9146403B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2011 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Jun 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/305
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In exemplary implementations of this invention, two LCD screens display a multi-view 3D image that has both horizontal and vertical parallax, and that does not require a viewer to wear any special glasses. Each pixel in the LCDs can take on any value: the pixel can be opaque, transparent, or any shade between. For regions of the image that are adjacent to a step function (e.g., a depth discontinuity) and not adjacent to a sharp corner, the screens display local parallax barriers comprising many small slits. The barriers and the slits tend to be oriented perpendicular to the local angular gradient of the target light field. In some implementations, the display is optimized to seek to minimize the Euclidian distance between the desired light field and the actual light field that is produced. Weighted, non-negative matrix factorization (NMF) is used for this optimization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.