Dome-screen device, dome-screen playing system and image generation method thereof
US9117389B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 17, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Jun 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3197
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a spherical-screen device, a spherical-screen playing system and an image generating method for image rectification. The method includes the steps of: equally dividing an arc curve of a spherical screen, which corresponds to a radian of 90°, into a plurality of segments; equally dividing a straight line of a planar image corresponding to the arc curve into a plurality of segments, the number of the segments of the straight line being equal to the number of the segments of the arc curve; assigning an image parameter of a first point in the planar image to a third point in a planar image; and connecting a sphere center with a second point of a to-be-displayed image position on the arc curve that corresponds to the first point, a point falling in the planar image being the third point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.