Derivation of studio camera position and motion from the camera image
US5502482A · kind A · utility
60Cited by
10References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Apr 15, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/107
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Studio camera position and motion may be derived from the camera image by separating out the background and deriving from a background having a number of areas of hue and/or brightness different from adjacent areas estimates of movement from one image to the next. The initial image is used as a reference and amended with predicted motion value. The amended image is compared with incoming images and the result used to derive translation and scale change information. Once the proportion of the reference image contained in an incoming image falls below a threshold a fresh reference image is adopted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.