Reducing noise in images acquired with a scanning beam device
US8411922B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2007 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Mar 3, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/441
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods and apparatus for reducing noise in images acquired with a scanning beam device are disclosed. A representative method may include scanning a beam of light over a surface in a scan with a variable velocity. Light backscattered from the surface may be detected at different points in time during the scan at a substantially constant rate. Reduced-noise representations of groups of the detected light that each correspond to a different position in an image of the surface may be generated. The reduced-noise representations may be generated for groups having multiple different sizes. The image of the surface may be generated by representing the different positions in the image with the reduced-noise representations of the corresponding groups. Other methods and apparatus are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.