Projection block extraction
US9241141B1 · kind B1 · utility
23Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2011 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Oct 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3194
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Sensing systems using projection blocks of structured light provide useful information about the surfaces they are projected onto. A camera captures an image which contains a captured block, that is, an image of the projection block interacting with the surface. Corrections may be applied to the captured image to compensate for distortions produced by projector and/or camera systems and produce a corrected image. Noise may be removed from the corrected image using a bilateral filter, producing a filtered image. The filtered image may be processed to determine a boundary of the captured block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.