Device and method for detecting dust on an image sensor
US8654217B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 2008 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Mar 17, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0084
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for detecting dust (18) on an image sensor (20) from a single captured image (14) of an actual scene (12) includes a control system (22) that evaluates at least one of a hue channel (466), a value channel (470), and a saturation channel (468) of the captured image (14) to determine if there is dust (18) on the image sensor (20). For example, the control system (22) can evaluate the hue channel (466) and the value channel (470) of the captured image (14) to determine if there is dust (18) on the image sensor (20). With information from the hue channel (466) and the value channel (470), the control system (22) can compute a computed probability (572) of dust (18) for a plurality of pixels (362) of the captured image (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.