Methods and systems for detecting defective imaging pixels and pixel values
US6965395B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2000 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | May 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/134
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is related to methods and systems for detecting defective imaging array pixels and providing correction, thereby reducing or eliminating visible image artifacts. One embodiment of the present invention provides an on-line bad pixel detection and correction process that compares a first pixel readout value with a first value related to the readout values of other pixels in first pixel's local neighborhood. When the first pixel readout value varies by more than a first amount as compared with the first value, a second value related to the readout values of the neighboring pixels is used in place of the first pixel readout value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.