Method and apparatus for identification and correction of aberrant pixels in an image sensor
US7940315B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 7, 2008 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Oct 21, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/68
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for identifying aberrant pixels in an image sensor. The apparatus includes a light sensitive element configured to detect a first signal value representing a first level of an incident light and a light sensitive region separate from the light sensitive element configured to detect a second signal value representing a second level of the incident light. Comparing circuitry is configured to compare the first signal value and the second signal value and to output a signal indicating the pixel is an aberrant pixel if the first and second signal values differ by more than a maximum threshold value or less than a minimum threshold value in a threshold value range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.