Method and apparatus for real time identification and correction of pixel defects for image sensor arrays
US7202894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2002 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Jun 29, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing system and method compares each pixel of an image obtained from an image sensor array with at least eight surrounding pixels of the same color in the filter array. If the signal of a given pixel is larger than the respective signals of all eight surrounding pixels of the same color, then the value of that central pixel signal is substituted with the maximum signal value among the surrounding eight pixels of the same color. Similarly, if the signal of a given pixel is smaller than the respective signals of all eight surrounding pixels of the same color, then the value of that central pixel signal is substituted with the minimum signal value among the surrounding eight pixels of the same color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.