Row and column noise correction with defective pixel processing
US9832402B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2015 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Dec 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/68
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Row and column noise calibration and correction includes obtaining pixel values from a row/column of calibration pixels and from a corresponding row/column of bright pixels. Defective calibration pixels are detected based on the pixel values of the row/column of calibration pixels. For example, calibration pixels with pixel values outside a predetermined range may be detected as defective. The pixel values of defective calibration pixels may be removed from the pixel data, or a corrected pixel value substituted in lieu thereof. An average of the pixel values of the row/column of calibration pixels is used to correct the pixel values of the corresponding row/column of bright pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.