Imaging systems with visible light sensitive pixels and infrared light sensitive pixels
US10136107B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2013 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Sep 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor may have an array of image pixels arranged in color filter unit cells that each have at least one red image pixel that generates red image signals, at least one blue image pixel that generate blue image signals, at least one clear image pixels that generate clear image signals, at least one infrared image pixel that generates infrared image signals, and optionally at least one green image pixel that generates green image signals. The image sensor may be coupled to processing circuitry that performs chroma demosaicking operations on the image signals. The processing circuitry may generate an infrared image using the infrared image signals and a luminance value using the clear, red, blue, and infrared image signals. The processing circuitry may perform point filter operations on the image signals based on the generated luminance value to produce corrected visible light image signals having improved image quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.